Archive for the 'Computer' Category
September 11th, 2009 by arun
Every day new computer viruses are created to annoy us and to wreck havoc on our computer systems. Below are ten viruses currently cited as being the most prevalent in terms of being seen the most or in their ability to potentially cause damage.
New viruses are created daily. This is by no means an all inclusive list. The best thing you can do is to remain vigilant, keep your anti-virus software updated, and stay aware of the current computer virus threats.
Virus: Trojan.Lodear
A Trojan horse that attempts to download remote files. It will inject a .dll file into the EXPLORER.EXE process causing system instability.
Virus: W32.Beagle.CO@mm
A mass-mailing worm that lowers security settings. It can delete security-related registry sub keys and may block access to security-related websites.
Virus: Backdoor.Zagaban
A Trojan horse that allows the compromised computer to be used as a covert proxy and which may degrade network performance.
Virus: W32/Netsky-P
A mass-mailing worm which spreads by emailing itself to addresses produced from files on the local drives.
Virus: W32/Mytob-GH
A mass-mailing worm and IRC backdoor Trojan fo r the Windows platform. Messages sent by this worm will have the subject chosen randomly from a list including titles such as: Notice of account limitation, Email Account Suspension, Security measures, Members Support, Important Notification.
Virus: W32/Mytob-EX
A mass-mailing worm and IRC backdoor Trojan similar in nature to W32-Mytob-GH. W32/Mytob-EX runs continuously in the background, providing a backdoor server which allows a remote intruder to gain access and control over the computer via IRC channels. This virus spreads by sending itself to email attachments harvested from your email addresses.
September 10th, 2009 by arun
This abbreviation stands for Transmission Control Protocol/Internet Protocol. It is the standard method by which all computers on the Internet communicate with one another.
Essentially, TCP breaks the data that is to be transmitted into little bundles called packets to be reassembled again after the transfer. It sets the standards for what thesr packets to be reassembled again after the transfer. It sets the standards for what these packets should look like and how to transmit them between computers.
September 7th, 2009 by arun
When you surf the web it is possible to learn information about you even when you don’t want to advertise who you are. This is true even if your system contains no virus or malware software.
Specifically information that is easily available online includes your IP address, your country (and often more location information based on IP address), what computer system you are on, what browser you use, your browser history, and other information. It gets worse.
People can get your computer’s name and even find out your name if your machine supports programs like finger or identd. Also, cookies can track your habits as you move from machine to machine.
September 6th, 2009 by arun
Today science dominates the life in every sphere. We cannot dream of a life without science. It has worked wonders. It has shortened distance and lessened time. It has enabled d man to fly in air and sail on the sea. It has given eyes to the blind, ears to the deaf and limbs to the disabled. But like many other things, so powerful and beneficial an object, science has its dark side too.
Science has given various inventions in the service of man. There are railways, motorcars, scooters to travel safety, comfortably and rapidly to far off places. Aero planes have enabled man to fly in air and reach overseas land in no time. Ships sail on the sea and do a lot of mercantile trade. Internet carries messages to friends at a place hundreds of kilometers away.
But with all, science has also produced deadly weapons like atom, hydrogen and nitrogen bombs that can destroy the whole world in no time. In case of warfare, the aeroplanes bombard and hundreds of men and women are killed and made disabled.
Today man has lost the peace of mind and soul. He is always after the money. He has become proud and greedy. He has lost the sprit of goodwill and neighborhood. He is under constant fear of wars and destructions. Thus, science is a curse also to human happiness. Comforts and easiness cannot provide happiness.
August 3rd, 2009 by arun
A New Worm named Conficker, Downadup or Kido spreads in a wide range through memory sticks, USB or low security networks and affects the PC very fast and poses a great threat to many users. This malicious program was first identified in October 2008 and is growing at a very fast rate. This worm has affected more than 3.5 million users so far, or may be the figure could be far higher than the estimated one. Keeping the Anti-virus up to date can help the system from such malicious program, else the internet users are going to be affected to a great extent as the worm searches for some executable part of the windows program file like ‘services.exe’ and then copies itself into the Windows folder as some ‘dll’ file with some different names. The dll file then changes or modifies the windows registry and runs as a windows service. Once it becomes part of the windows service, it creates some HTTP server and downloads files from hacker’s website and also changes the system restore point. This worm is completely different from others as it uses some complicate algorithms to generate 100’s of domain names and makes use of it, by affecting the users worldwide mostly from China, Brazil, India, Russia, and many countries. From the generated domains, it uses only one site for downloading the hacker’s files, so it is not possible to track that particular site. Experts from Kaspersky lab said that the new variant included two weeks ago makes it more complicated and uses multiple mechanisms in USB’s too and downloads many contents and creates new variant through this mechanism. Technicians using some reverse mechanism of the worms, so that they could only monitor them but cannot disinfect them. Users without proper anti-virus updates are going to be affected by this malicious program.
July 30th, 2009 by arun
One of the advantages of networking computers is that resources can be shared . Here are some tips on sharing printers on the network .
Installing network printers
You can access a number of shared printer across the network . To do so, you will need to install the printer within Windows . Locate the computer that is sharing the printer on the network form Network Neighbourhood .
Right Click on the shared printer and choose Insatll . The Add printer wizard will guide you through the install . The wizard will offer to print a test page to confirm that tha printer is properly installed .
Setting a local Printer :
If you have printer attached to your computerand want to share it across the network, go to Control Panel -> Printers . Within the printers folder, right click on the printer you want to share and select Sharing . Here , select Shared As and type in the name of the printer in the Share Name Field .
To finish, Click OK. The printer will now be shared across the network .
Restructing Access :
Access control for printers work in much the same way as for shared folders . You can restrict access to the printer to specifc users by typing in a password in the shared Printer menu .
This way only those people with the password will be able to use the printer
July 21st, 2009 by arun
Working on forms and report is a breeze with Access XP . Mentioned below are the some shoutcut keys that would make work simpler and easier :
[Ctrl]+[Tab] : To move a subsection
[F2] : To swich between Edit mode(with insertion point diaplayed) and Navigation mode .
[F4] : To switch to the property sheet ( Design view in forms and reports in database and access projects).
[F5] : To switch to form view from Form design view .
[F6] : To switch between the upper and lower portion of a window(Design View of the Advanced Filter/Sort window only)
[F7] : To switch to the code Builder from Form or Report Design view ( Design view window or property sheet)
[F8] : Invokes the field list in a form , report, or Data Access page . If the field list is already open, it moves focus to field list . After Seletion of a field from the list, you could just press [Enter] to insert that field .
[Ctrl]+[Enter] or [Alt]+[D] : To open the selected table , query, form , report, data access page, macro, or module in Design view .
July 12th, 2009 by arun
Image indexing :
It’s not only the title and Meta tags that helps you get indexed on search engines . Some search engines use the image tag’s ALT attributes to index and rank pages . The attributes shows a tool-tips kind of text when you hover the mouse over the image . This descriptive text can help you get listed in search engines that use this features for indexing and ranking . Of courses , this does not work across all the search engines , but you should definitely give it a try .
Get Linked
Most traffic to your site would be directed from links that people click at other Web Sites . So you need to build a sort of online network, and get listed on the other site that could provide a link to your page . You can exchange the links by checking the pagerank of other site . ask for backlink . The best way to increase your backlinks is add a shout box in your domain . chat with your friends make friends and ask them to add your link to there blog are website .
While choosing a link exchange site , choose one that content is relevant to your content . .
July 2nd, 2009 by arun
Increasing Connection speed :
Some of us may find that after installing Windows XP, the Internet connection gets slower . A possible reason for this is the QoS installed . This services reserves 20 per cent of the bandwidth for itself, even with QoS disabled . In order to remove this reserved quota , you will have to make sure you are logged on as Administrator . Go to Start – > Run and type ‘gpedit.msc‘ . Expand the ‘local computer policy’ branch, the ‘administrative templates’ branch , and the ‘ network’ branch . Highlight the ‘QoS Packet Scheduler ‘ in the left window . In the right window, double click the ‘limit reservable bandwidth’ setting tab, check ‘ enabled ‘ , and change the ‘bandwidth limit %’ to read 0 . You should notice an immediate boost in you internet connection speed .
Speeding up network Browsing :
A bug in the windows 2000 causes the scheduled tasks folder to be searched , whenever the user browses network drives . While Microsoft has developed a fix for this bug , the fix slows down the browsing of Microsoft networks . In order to fix the problem , go to Start -> Run and type in regedit and press [enter] . Navigate to
HKEY_LOCAL_MACHINE/software/Microsoft/Windows/CurrentVersion/Exporer /RemoteComputer/NameSpace. Then find the key
{D6277990-4C6A-11CF-8D87-00AA0060F5BF}.
Right Click on it and delete it . Restart the computer .