11-07-2012, 02:42 PM
COMPUTER VIRUSES AND ANITVIRUSES TECHNIQUES
computer virus ppt.ppt (Size: 2.91 MB / Downloads: 54)
WHAT IS COMPUTER VIRUS ?
“A kind of malicious software written intentionally to enter a computer without the user’s permission or knowledge, with an ability to replicate itself, thus continuing to spread”
ROGUE SOFTWARE
A form of computer malware that deceives or misleads users into paying for the fake or simulated removal of malware, or that installs other malware.
Has become a growing and serious security threat in desktop computing.
ROGUE SOFTWARE
Most have a Trojan horse component, which users are misled into installing. The Trojan may be disguised as:
A browser plug-in or extension (typically toolbar)
An image, screensaver or archive file attached to an e-mail message.
Multimedia codec required to play a certain video clip .
Software shared on peer-to-peer networks.
A free online malware scanning service.
OPERATION OF ROGUE MALWARE
Once installed, the rogue security software may then attempt to entice the user into purchasing a service or additional software by:
Alerting the user with the fake or simulated detection of malware.
Displaying an animation simulating a system crash and reboot.
Selectively disabling parts of the system to prevent the user from uninstalling them. Some may also prevent anti-malware programs from running, disable automatic system software updates and block access to websites of anti-malware vendors.