The document discusses computer viruses and how to prevent virus attacks, noting that logic bombs can erase hard drives or delete files when triggered, while Trojan horses pretend to be something harmless but can delete all files. It provides tips for using antivirus software like installing good software, doing daily scans, keeping it updated, and scanning removable devices before use. The document also explains how antivirus software works by examining files and comparing them to known virus definitions.

1. Submitted To : Submitted by :
ICAI Jodhpur Shyam Prajapat
(A statutory body established under an Act of Parliament)

4. A Logic bomb delivers its instructions when it is
triggered by a specific condition, such as when a
particular date or time is reached or when a
combination of letters is typed on a keyboard. A
logic bomb has the ability to erase a hard drive or
delete certain files.

5.  Trojan Horses is simply a program (often harmful)
that pretends to be something else.
 it is a piece of software that when executed deletes
or removes all of your files on your hard-drive.

8. Tips to Prevent your PC from Virus attack
 Good Anti-virus software installed
 Do daily scans
 Never install more than one Anti-virus
 Keep you Anti-virus software updated.
 While inserting Romavable devices to your PC, scan it
thoroughly and then access or copy data from it.

10. How An Anti-Virus Works……
The antivirus software examines each and every file in
a computer and examines its content with the virus
definitions stored in its virus dictionary.
A virus dictionary is an inbuilt file belonging to an
antivirus software that contains code identified as a
virus by the antivirus authors

12. Computer viruses are human invention and
how they are spreading and growing day by day
so there is only way to protect your PC and that
is antivirus soft-wares but up to dates