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Virus Penetrator: Stricken Areas And Methods Of Struggle
Mar 30th
In recent years, virus Penetrator greatly annoys the computer users. It has no “snap” to a particular date, it begins its destructive actions immediately after the start of the executable.
The origin of the virus and the etymology of the name.
Different legends go about the origin of the virus. Allegedly, the Russian student programmer, rejected by his girlfriend, decided to avenge her in this way, but at the same time to the entire digital world…
The destructive effects of the virus
All. Jpg-files (. Jpg,. Jpeg) are replaced by .Jpg-images (the size of 69h15 pixels, “weight” of 3.1 KB) with a stylized inscription Penetrator (black print on gray-white background).
Files. Bmp,. Png,. Tiff virus “doesn’t touch.”
Audio files (. Mp3,. Wma), video (. Avi,. Mpeg,. Wmv), files Word (. Doc,. Rtf), Excel (. Xls) and PowerPoint (. Ppt) are destroyed (usually just removed, rarely their contents are replaced by the other content, for example a text file is replaced by the coarse language).
That is, the virus corrupts the most precious thing that a PC user has!
Classification of the virus
Antivirus identify a malicious program differently (as always!): How does your computer get infected?
Tools of spread of the virus are internet, flash-drives.
Infection usually occurs during the startup of the file disguised as a screensaver *. scr, less the virus “pretends” to be the . Mp3files.
In addition, the virus creates the following files:
WINDOWSsystem32deter * lsass.exe (unlike the present lsass.exe, “living” in a folder WINDOWSsystem32);
WINDOWSsystem32deter * smss.exe (in contrast to the present smss.exe, ” living “in a folder WINDOWSsystem32);
WINDOWSsystem32deter * svshost.exe (the letters” c “and” o “are Cyrillic, in contrast to the present svchost.exe);
WINDOWSsystem32ahtomsys *. exe (eg, ahtomsys19.exe);
WINDOWSsystem32stfmon.exe (the letters “c” and “o” are Cyrillic, in contrast to the present ctfmon.exe);
WINDOWSsystem32psagor *. exe (or psagor *. sys, or psagor *. dll; for example, psagor18.dll) .
Files have attributes hidden, system, read-only. Size 114.5 KB.
The virus registers itself in the Windows registry settings REG_SZ-Shell and Userinit section [HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionWinlogon].
The virus is memory-resident; it is loaded with the operating system on the infected PC and is always present in memory.
How to eliminate the destructive effects of the virus
1. Check the hard drive with a reliable antivirus with fresh databases.
2. Remove (if not destroyed by antivirus)
3. Remove (if not destroyed antivirus) the following files:
WINDOWSsystem32deter * lsass.exe (delete the file with a folder deter *);
WINDOWSsystem32deter * smss.exe (delete the file with a folder deter *);
WINDOWSsystem32deter * svshost . exe (the letters “c” and “o” are Cyrillic, in contrast to the present svchost.exe; delete the file with a folder deter *);
WINDOWSsystem32ahtomsys *. exe (eg, ahtomsys19.exe);
WINDOWSsystem32psagor *. exe (or psagor *. sys, or psagor *. dll; example, psagor18.dll).
4. Check the registry key [HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionWinlogon]:
REG_SZ-Shell parameter must be set to Explorer.exe;
REG_SZ-parameter Userinit should be set to C: WINDOWSSystem32userinit.exe,
5. Remove from startup files ahtomsys *. exe, fake stfmon.exe and psagor *. exe (see Registry
[HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionRun]).
6. Remove the template Normal.dot.
7. Try to recover the files deleted by the virus. You shouldn’t obsess over, but something (if not recorded on top of other information!) will be able to recover.
Because files. Jpg are overwritten by the virus under the same name but different contents, they cannot be restored.
Your PC can get into serious problems if you do not pay attention to the regular update of the drivers. And this is where driver updater can save you much time and efforts.
We would like to give you a final piece of advice – today the web technologies give you a truly unique chance to choose what you need for the best price on the market. Strange, but most of the people don’t use this opportunity. In real practice it means that you must use all the tools of today to get the info that you need.
Search Google or other search engines for the topic of “driver reviver“. Visit social networks and check the accounts that are relevant to your topic. Go to the niche forums and participate in the online discussion. All this will help you to build up a true vision of this market. Thus, giving you a real opportunity to make a wise and nicely balanced decision.
And also sign up to the RSS feed on this blog, because we will do the best to keep this blog tuned up to the day with new publications about the market of drivers and slow computer solutions.
How To Make A LAN By Yourself.
Mar 30th
A local area network is an information space which combines several computers. With the help of the local network one can transmit information, communicate and play computer games. Local networks can be offices, private and home.
Where should you start? And how do make a network and what is needed?
Suppose you need to combine three computers, then the list will look something like this:
1. Switch 5 ports – 1 pc.
2. RJ-45 cable (also known as twisted pair) – a certain number of feet (you will have to measure and calculate it, but it is worth remembering that a distance from the switch to the computer of more than 320 meters isn’t desirable, and between the two switches can’t be more than 200 meters).
3. More desirable is to buy nylon ties. Because if you remove the cable from your apartment or house, then ties will give you the opportunity to twisted pair attached to other wires or anything that could serve as a mount.
4. Network card 100 Mbps – 3 pc. (Unless, of course, they were not there before or network card is not built into the motherboard of your computer).
5. RJ-45 connector – 6 pc, but it is better to take with a reserve, since there is a risk of compressing the cord improperly.
6. Device for crimping RJ-45 cable (twisted pair) – 1 pc. (It will stay with you in the future if your network will be expanded, it will be an indispensable tool).
Although, I think we should explain about the paragraph 6 of the list: if you connect two computers in one apartment, and you will not have to pass through a twisted pair to holes drilled in walls or ceilings, it is better to buy the right amount of cable and you can compress it in the shop. In other cases it is indispensable as it is difficult to provide the right amount of cable, and if 5 meters of it will be left, and you have already compressed it, you have two options – either to cut and re-compressing the cord, or to accept a skein of cable underfoot.
Also you will have to choose the place where to put the switch, so it does not interfere with anyone and had the best location in relation to all three participants in this adventure. Most often loft or an electrical panel is chosen for this.
After the cable installation there is another problem. What to do with a piece of wire, or rather how to stick it into the switch or network card.
That’s why we need the connectors and device for crimping.
Here we must look at the device of twisted pair. It consists of 8 small wires twisted two in 4 pairs. Each of the 8 cable has its own color; here is the procedure of correct accommodating of the wires in the connector before compressing them.
1 way of swage:
White and green, green, white and orange, blue, white and blue, orange, white and brown, brown.
2 way of swage:
White and orange, orange, white and green, blue, white and blue, green, white and brown, brown.
Thus, if to compressing by the 1 or 2 ways from the two sides, then you will have a direct link used for connection between two switches or a switch with the computer.
If compressing by the 1 and 2 way from different sides the “cross” for the connection of the two computers will be. This is because the network card can transmit and receive information only on a particular contact, and if you will swage a twisted pair from both ends by the same way, in the end you will not have a network between two computers.
Your computer can get into serious troubles if you do not pay attention to the regular update of the drivers. And this is where driver updater can save you much time.
We would like to give you some general tips – today the Internet technologies give you a really unique chance to choose exactly what you require at the best terms which are available on the market. Strange, but most of the people don’t use this chance. In real life it means that you should use all the tools of today to get the info that you need.
Search Google or other search engines for the topic of “driver reviver“. Visit social networks and check the accounts that are relevant to your topic. Go to the niche forums and participate in the discussion. All this will help you to create a true vision of this market. Thus, giving you a real opportunity to make a wise and nicely balanced decision.
P.S. And also sign up to the RSS feed on this blog, because we will everything possible to keep updating this blog with new publications about the market of drivers and slow computer solutions.
What Are The Main Parts Of A Computer ?
Mar 29th
Everyone understands that personal computers tend to be complex devices – the machines made from an amalgam of electronic elements as well as components. But which computer components are crucial for a computer to operate? Modern PCs may still operate completely without Bluetooth or perhaps a floppy disk drive. Here is a summation of computer components that the computer system can’t do without.
Motherboard. The motherboard is really a pretty basic unit in a computer system. This is in fact the computer component to which other internal computer elements are connected. It links the rest of the primary components of the computer system collectively. Consequently, motherboards are occasionally known as the “heart” of the computer system.
CPU. The processor or CPU may be the computer component accountable for running programs and apps within the computer. Without a CPU inside your computer, you won’t be able to execute any tasks- you ca not boot a good operating system, you ca not play music, movies and games, and also you cannot do any kind of word processing. For any computer to perform, it has to possess a CPU.
RAM. Random Access Memory or even RAM is an additional vital computer element. It is the actual storage media- the place where a computer temporarily stores files and information it can pull randomly when operating programs and processes. Along with the CPU, RAM defines the computer’s speed. A computer having a large amount of RAM and also a mediocre CPU can in fact run faster than the usual computer with a strong PROCESSOR but reduced RAM.
HDD. Rather than the RAM, the hard drive or HDD’s purpose is to store computer’s files as well as data long-term. Really, without power, the hard disk still retains the actual files stored inside. The hard disk drive can store essential system files such as the operating system, program files along with other data. It may also be used to store audio files and videos. When the computer runs with RAM, it will temporarily make use of the hard disk like an additional memory storage.
Video Card. A video or graphic card helps a computer to show images on the computer monitor’s screen. It will help speed up the actual rendering of pictures onscreen and plays a role in clearer and more sharp pictures. PC gamers as well as multimedia software users will discover a high-end devoted graphics card useful in running graphics-intensive applications efficiently.
PSU. The power supply unit or rather PSU in short supplies just about all computer components with power. It converts the actual high voltages through an AC power electric outlet to cut back voltages that tend to be safe for inner computer parts. With no PSU, a computer and its components won’t be able to even start.
A computer may also benefit from a good Optical Drive to browse through and play Compact Disks and DVDs, a router letting you connect to the Web, and some peripheral devices for instance printers and scanning devices. The motherboard, CPU, RAM, HDD, video card as well as PSU are, nonetheless, the main components that define a computer structure.
Today they are almost anywhere one can imagine – the diverse and versatile computers. It makes no difference if you need them for game or work or for serious industrial processes. Sometimes it happens you cannot find a needed configuration then you any time can buy computer components and assemble it yourself.
But I wouldn’t recommend buying the first components you find – it is very important to select the proper ones and only then to buy pc hardware. The Internet offers much info on computers and buying pc hardware tips that will help you to choose great stuff for your computer.
Keep in mind that our world is the world of modern Internet technologies. It wouldn’t be smart not to avail oneself of the web network to search for anything at the best prices available on the market. Search engines, social networks, blogs and forums – all this will help you make a decision on many issues.
P2P Network. A Manual For Beginners
Mar 29th
Most people use the Internet for downloading various kinds of information. As a rule, everybody is trying to download it for free. But there is a great number of people, and if the information is located on one server, then the server channel will be overloaded and it becomes inaccessible. But what do we have to do in this case? After all, not many people want to pay for that their information would be available worldwide for free.
P2P networks were invented to do this. The principle of P2P is very simple. That person who wants to transmit information creates the torrent file and starts the distribution of information. Those who wish to download the information download the torrent file, its size can be neglected, because it is significantly small compared with the size of the information, and start downloading information.
But what then is the advantage?
Once someone has downloaded a piece of information from the dealer’s, he immediately begins to give it away. In other words, each participant of P2P networks not only downloads, but transmits the downloaded information to other parties. Thus it is no need for large bandwidth at the source of information.
One who has all the pieces of information, i.e. one who distributes, but does not download anything is called seeder. Anyone who needs information and downloads it is called leecher. As soon as the leecher downloads all the information, he begins to distribute and becomes a seeder. This is another advantage of P2P networks.
If someone has an interesting film, music, book, game or something else and he wants to share with everyone, it does not necessarily to have a fast Internet connection and be permanently online. He needs only to create a torrent, start distribution and wait until every piece of the distributed information will be downloaded at least once. Then he can turn off, while the others will be able to continue downloading as if nothing had happened. They will share the chunks of downloaded information with each other.
But how do the participants find each other? To help in finding participants downloaded the information there is a so-called tracker that manages the torrents. First the participant is connected to the tracker, downloads the information about the other participants from there, and then begins to share information with them.
What information can be transmitted over P2P network? Absolutely any. Movies, serials, games, software, music, books and photographs are usually downloaded over P2P networks. It is very difficult to find a site where you can download one or the other movie for free but with the help of P2P networks this process can be completely free to download it from the other Internet users.
Your PC can get into serious troubles if you do not pay attention to the regular update of the drivers. And this is where driver updater can save you much time.
We would like to give you some general tips – today the web technologies give you a really unique chance to choose exactly what you require at the best terms which are available on the market. Funny, but most of the people don’t use this chance. In real practice it means that you should use all the tools of today to get the information that you need.
Search Google and other search engines for the topic of “update drivers free“. Visit social networks and check the accounts that are relevant to your topic. Go to the niche forums and join the online discussion. All this will help you to create a true vision of this market. Thus, giving you a real chance to make a wise and nicely balanced decision.
P.S. And also sign up to the RSS on this blog, because we will do the best to keep this blog tuned up to the day with new publications about the market of drivers and slow computer solutions.
Ways To Store Your Passwords.
Mar 29th
Each active Internet user is registered on several blogs, forums, social networks and many other online services to facilitate his life on the Internet. And all the services require a password, and it is desirable a different one for each of them. It is necessary for the user’s security.
But it’s just not safe. After all, if the attacker knows the password from one service, then he will know passwords for the other. And that may substantially affect the authority of the user, and in some cases, the work of man.
It is an easy task to come up passwords of meaningless symbols and sticks, but to remember this is not so simply, and often unrealistic. And besides, it is very inconvenient.
That’s why you start saving passwords into a text file. And when they are needed, you must find this file, open it, find the password and copy it to a clipboard. But this way has more minuses than pluses.
1) the file can be stolen. And if a computer is at work, it can be benefited from co-workers or boss to see what you’re talking on ICQ.
2) a “Trojan” can occur on your computer, which will record data copied to the clipboard and send to the owner, and he already knows how to use your passwords.
But progress does not stand still, and someone has already thought about this issue and wrote a special program that can store passwords in a single file.
There are many such programs, but they all operate on the same principle. When you run the program asks for a password, while it will check it on the “strength” (crypto hardiness and complexity), and if the password does not work for some criteria it will suggest to introduce a new one or generate it itself. The only needed thing is just to remember your password. When you first start the program creates an encrypted file that will store passwords.
These programs allow you to group and sort the individual records effectively, to separate passwords for email, ICQ, and electronic purses. It supports the autosuggestion of Web forms. To do so, you need to complete the questionnaire once, and in the future on going to the site, forum, blog, you just need to press one button and filled out the required fields themselves. It is a very handy thing, especially for those who are in search of work.
You can also just move the username / password with the mouse from the program in the appropriate input field of web form. It is suitable for forms where you need only to enter your login and password.
In order not to invent the most complex passwords the program has a password generator. You only need to specify the number of characters that will constitute the password alphabet and punctuation marks, which will be included in the generated password.
And if necessary, a list of passwords can be exported to a text file and then print or share with our friend – let him read your mail!
Good luck, and keep your passwords securely!
Your PC can get into serious problems if you do not pay attention to the regular update of the drivers. And this is where driver updater can save you much time and efforts.
We would like to give you a final piece of advice – today the Internet technologies give you a really unique chance to choose exactly what you need at the best terms which are available on the market. Strange, but most of the people don’t use this opportunity. In real practice it means that you must use all the tools of today to get the info that you need.
Search Google or other search engines for the topic of “driver downloader software“. Visit social networks and check the accounts that are relevant to your topic. Go to the niche forums and participate in the discussion. All this will help you to create a true vision of this market. Thus, giving you a real opportunity to make a wise and nicely balanced decision.
P.S. And also sign up to the RSS on this blog, because we will everything possible to keep this blog tuned up to the day with new publications about the market of drivers and slow computer solutions.
Social Networks Became Very Dangerous
Mar 28th
British antivirus company reported that in the fourth quarter the most of spam has been sent at the United States.
As it became known American spammers are responsible for 19% of unwanted emails. India and Brazil had 12% of total spam traffic (7 and 5 per cent, respectively). Despite the slow Internet access, Russia ranked the fourth place in the list of most active “spammers”, it is about 4.6%. The UK was placed in fifth place of rating with a share of 4,5% of illegal deliveries. As noted, for the last time the composition of the top five remains unchanged.
Nearly 60% of global spam comes in the “dirty” dozen – 12 countries, among which there is France, South Korea and Vietnam. Despite the leadership of the United States only 22% of spam is sent from North America, while in Europe and Asia it accounts for about 66% of all unwanted mailings.
The study notes that in 2010 there was a tendency to change “nature” of spam. The experts observed the increase in malicious messages aimed at interception of confidential information, including through the dissemination of malicious links in social networks. Compared with 2009, the amount of spam and malware on social networking sites grew by 70%. Specialists tend to believe that the cause is the careless attitude of users to the security settings of personal data, as well as the credibility of the links and applications that were received from “friends.”
Experts also note that the growth in spam activity in the U.S. linked to hacker attacks on computers of the Americans. As a result, the infected computers unite into botnets, one of the applications of which is just related to unsolicited emails. Only in the first half of 2010 more than 2.2 million American computer users were united into botnets.
In some countries the second quarter of 2010, the bots were detected by 4,3 of thousands of proven computers at the world average amount of 3.2. The most active virus in the period was a botnet client Win32/Rimecud, which accounted for 37% of infections.
By the way, if the Internet is tantamount to the fundamental rights then the amount of spam sent out from this country will increase. This stems from the love of users to free content, including the suspicious sites. Note that due to the neglect of users to security policy, many have become victims of Internet fraud.
Your computer can get into serious problems if you do not pay attention to the regular update of the drivers. And this is where driver updater can save you much time.
We would like to give you a final piece of advice – today the Internet technologies give you a truly unique chance to choose exactly what you want at the best terms which are available on the market. Funny, but most of the people don’t use this opportunity. In real practice it means that you should use all the tools of today to get the information that you need.
Search Google or other search engines for the topic of “update drivers free“. Visit social networks and check the accounts that are relevant to your topic. Go to the niche forums and participate in the discussion. All this will help you to create a true vision of this market. Thus, giving you a real opportunity to make a wise and nicely balanced decision.
P.S. And also sign up to the RSS on this blog, because we will do the best to keep this blog tuned up to the day with new publications about the market of drivers and slow computer solutions.
Computer Training Courses That Everyone Should Go On
Mar 27th
Computers have changed the way we perform a large number of tasks. Research is done online while disc drives and hard drives play and store our music. Data is entered and stored on spreadsheets contained in a program found on the computer and the list goes on. It goes without saying that the machines are not going anywhere any time soon; therefore there are computer training courses that are worth taking in order to better familiarize yourself with their capabilities.
A computer training course in Microsoft Excel is highly beneficial because in today’s high speed world, people want to see numbers and data at a glance and in an organized fashion rather than sift through endless numbers scattered throughout column after column. An Excel training course will educate you on how to create charts that gather the data and present it in an easy-to-read summary. Because Excel provides a working spreadsheet, you will also want to allow users to input data in selected cells. You might want to create a workbook and edit and delete numbers and rows accordingly. A Microsoft Excel training course will help you learn the processes.
Microsoft Word, like Excel, is a segment of the Microsoft Office Suite. Word is much more than a fancy typewriter, and a training course covering the program can help unlock all of its abilities. Information found in essays and presentations can be pinpointed with bullets, numbering, and multilevel lists. Watermarks and colors may be used to embellish the page, while various alignments form the page the way it needs to be according to the type of document it is. Research papers often require headers and footers, while clip art can be added to worksheets and less formal paperwork. Addresses are printed onto envelopes using Word (and a printer). As you can see, it is a program that provides many features that really make your work stand out and a training course will help you discover and use its features.
There are several different operating systems (OS) that computers run on; therefore, a training course in the one your computer uses is greatly beneficial. Each version slightly tweaks where and how information is stored and the methods by which your computer performs tasks. Screen savers and mouse controls are just a couple of the myriad functions the OS performs and a training course can help significantly in familiarizing yourself with all of its capacities.
The prevalence of computers has created the inclusion of a wealth of features on the highly evolved devices. With so many actions that computers are capable of, it is sometimes difficult to keep up with them. Computer training courses worth taking better enable you to get the most out of the machines.
Now Try – Excel Courses
The Most Important Computer Parts.
Mar 26th
Just about every extreme PC person chooses each component individually. They know which part needs to be extremely fast for his or her individual needs as well as which part could be just fast as well as mediocre. But for beginners or those who are doing research right now in order to decide for their own next purchase, this is a list of the top 4 most essential computer parts.
RAM. Anyway I guess it may be so important simply because multi-tasking is the main thing we are doing nowadays. We are starting several internet browsers, the movie or video clip, then we’re downloading and getting Adobe Photoshop running within the background. All these helpful applications are consuming memory and when it’s full, it really is full. This means we are able to open absolutely no more without the computer slowing or even failing to perform. It is something we ought to seriously look at when purchasing a new PC. Bear in mind your needs as well as the budget.
CPU. The speediest windows performance can only be reached having a CPU that provides high speed. This makes windows open up faster, run softer, and will boost the graphics experience. Like in case with the memory, you should synchronize your requirements and budget to get a proper processor. Go for quad cores if you wish to do serious multi-tasking. But then go for dual core if you happen to be less of the multi-tasker and would really like a cheaper CPU.
HDDs. Those of you that are less known using the shortcuts it means hard drive also referred to as the ‘gigabytes’ as I can see from the screen of my computer monitor. Whenever you run out of the storage space, what this means is you are out of game. To ensure you are able to store all your computer data for a long time, make a listing of things you be prepared to store and double it for any more future update of your operating system. 1 terabyte hard disks are as low-cost as seventy dollars these days so don’t hesitate to go positive using more GBs.
Motherboard. Ah yes it’s the mother of virtually all computer parts. And it is the stronghold of just about all greatness. The cream and foundation of each and every nice masterpiece. Should I continue on with these? In fact, I have gotten a lot more. The motherboard is the main component of each and every computer because it is among the sole criteria when choosing the part which you can put inside your PC and pretty much on how excellent it works on the whole. If you purchase the wrong motherboard, it’ll restrict you inside your processor, memory, HDD and graphical card option. So without a doubt it really is a very powerful part of your PC and you always ought to pick one carefully.
So there we have it. Four elements you should think about with extreme care when purchasing a new computer. Of course you will find other parts involved in the process, however these are the most important, vital, decisions that you need to make before even starting to spend your money.
Today they are almost anywhere one can imagine – the “mighty” computers. It makes no difference if you need them for fun or work or for serious industrial processes. Sometimes it occurs you cannot find a required configuration then you always can buy computer components and assemble it yourself.
However I wouldn’t recommend buying the first components you find – it is very important to select the proper ones and only then to buy pc hardware. The online network offers a lot of info on computers and pc hardware tips that will assist you to choose great stuff for your PC.
Keep in mind that our world is the world of modern Internet technologies. It wouldn’t be smart not to make use of the online network to look for anything at the best prices available on the market. Search engines, social networks, blogs and forums – all this will assist you to solve many issues.
How To Find Computer Parts.
Mar 25th
From time to time, your computer may require computer parts to be able to restore it to working order. When you are not so technologically oriented, you might want to know why some parts are essential and where one can purchase them to assist to save yourself some money if you are needing to consider delivering your computer to some shop for maintenance.
Some times your own laptop computer or desktop computer can continue the occasional failure which frankly could be a pain especially if you work at home, or it might be that your laptop or desktop computer decides to keel over you. It never hurts to understand things about computers especially in the current high technology age. First, let us check out computer software and why it’s important for your computer. Software is actually the applications along with other needed data that provides your PC or even Mac with instructions on how to proceed. As opposed to hardware, software is actually unaffected. It may also pertain to applications for example Word or Notepad. Additionally, there are typically downloads which will upgrade software to ensure that it will run much more smoothly. Currently, hardware differs in the truth that it can end up being installed into any kind of PC or Macintosh. Needed hardware is really installed into the operating system from the computer and needs different software apps to ensure that it may function properly. Therefore hardware as well as software go closely together.
If you need to make use of your program for gaming you will want to be sure that you have a modern sound card and video card. A sound card is really needed to intake and output signals that associated with audio and music. This will work for any type associated with sound like music or even for delivering presentations for work or school which may copy your own voice. Video cards make you able to observe visual graphics much better. This is also helpful if you wish to watch movies in your system and will work for gaming equally nicely.
The power block can also be essential in running the whole computer without a problem. Judging by its name, it runs your computer indeed and if it will go bad you’ll be able to purchase a brand new one online or maybe at the electronic devices store. This is indeed a fairly simple item to fix on your own if you have basic knowledge. Familiarizing yourself using the major components of the intelligent digital machine can be very helpful later on. One day you might be able to even walk into a digital store and opt for the parts you’ll need in order to construct or repair your own machine. You will even understand upgrades and be able to escape costly repair expenses.
Now they are all over the world – the “mighty” computers. It makes no difference if you need them for game or work or for serious industrial processes. Sometimes it occurs you cannot find a needed configuration then you always can buy computer parts and assemble it yourself.
However I wouldn’t recommend buying the first components you find – it is very crucial to select the proper ones and only then to buy computer hardware. The online network offers much info on computers and buying computer hardware tips that will assist you to choose great stuff for your PC.
Remember that we live in the world of high online technologies. It wouldn’t be smart not to avail oneself of the web network to look for anything at the best prices available on the market. Search engines, social networks, blogs and forums – all this will assist you to make a decision on many issues.
Flash Cards Can Steal Windows Passwords
Mar 25th
Windows Vulnerability lets you use flash cards to crack the system password storage.
A serious vulnerability of the startup and LAN Management Windows functions has been demonstrated in the latest release of site of hacking Video Podcasts. USB-module connected to the computer allows creating a “back door” in the system within a few seconds and choosing a password.
The tool presented in the video program called “USB-tool for instant password recovery”, or” USB Switchblade “. The main problem in the authentication system of Windows is the usage of a weak password hash LAN Manager (LM) calculated by the algorithm DES. The problem is not in the crypto but in its implementation. Password is transferred to the uppercase (using the letters we get 26 options instead of 52), then the password is supplemented or truncated to 14 symbols, divided in half, and two 8-symbol hashes for DES algorithm are created from the half of these. These 16 symbols are stored as a hash LM. That is, the system automatically makes a selection process for a cracker, first by restricting the number of options, and then dividing a password in two.
To steal passwords the USB flash drive had been used which implemented the technology the main feature of which is that the part of the disc serves as a virtual CD-ROM-drive. If placing the autorun file there during the connection of the disk through the USB Windows runs the file. Different applications are usually recorded on the disc, so they can be run directly from a flash drive, but there can be recorded any other data, in particular, changed the autorun file autorun.inf. This is done by the installer program LPInstaller.exe replaced in advance by the image created with the name cruzer-autorun.iso.
The autorun file starts various tools that easily copies the LM hashes from the system to a flash drive. The following is a quick selection of the password: the original word (of 7 large letters, numbers and some symbols) is converted (hashed) for the DES algorithm and compared with the encrypted. The pre-generated hashes of common passwords at the dictionary are mostly used for acceleration.
In the process of hacking a few problems may happen. Firstly, it will not work if the computer is running under the administrator account. Secondly, the standard utilities of copying the hash can be detected by antivirus software.
To defend against the password cracking using the flash cards the user can either disable the AutoRun CD-ROM drive, or choose a long password of random characters which complicates the selection process. Starting from Windows 2000 you can disable the storage of hashes LM.
The vulnerabilities of the system of passwords storage in Windows have been known for a long time since the second half of the 90-ies. However, USB and flash drives hadn’t existed yet, and hackers used other ports
Your PC can get into serious troubles if you do not pay attention to the regular update of the drivers. And this is where driver updater can save you much time.
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