| Virus
Checkers & Removal Tools
What is a Virus?
In computer security technology, a virus is a self-replicating program that spreads by inserting copies of itself into other executable code or documents (for a complete definition: see below). Thus, a computer virus behaves in a way similar to a biological virus, which spreads by inserting itself into living cells. Extending the analogy, the insertion of the virus into a program is termed infection, and the infected file (or executable code that is not part of a file) is called a host.
What are the Symptoms?
- Programs take longer to load. Memory-intensive operations take a lot of time to start.
- A change in dates against the filenames in the directory. When the virus modifies a file the operating system changes the date stamp.
- The floppy disk or hard disk is suddenly accessed without logical reason.
- Increased use of disk space and growth in file size-the virus attaches itself to many files.
- Abnormal write-protect errors. The virus trying to write to a protected disk.
- Strange characters appear in the directory listing of filenames.
- Strange messages like "Type Happy Birthday Joshi" (Joshi Virus) or "Driver Memory Error" (kak.worm) appear on the screen and in documents.
- Strange graphic displays such as falling letters or a bouncing ball appear on screen.
- Programs may hang the computer or not work at all.
- Junk characters overwrite text in document or data files.
Removal
Tools:
Unfortunately, there are not
many free virus removal tools. We have listed few of the Free
ones and some good paid ones as well.
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