Anti virus

Anti virus

Software applications for preventing, detecting, and removing malware, including computer viruses, worms, and trojan horses.

Industry: Software

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Anti virus

Memory-resident virus

Software; Anti virus

A memory-resident virus stays in memory after it executes, and it infects other files when certain conditions are met. In contrast, non-memory-resident viruses are active only while an infected ...

Master boot-sector viruses infect the master boot sector of hard disks, though they spread through the boot record of floppy disks. The virus stays in memory, waiting for DOS to access a floppy disk. ...

Polymorphic virus

Software; Anti virus

Polymorphic viruses create varied (though fully functional) copies of themselves as a way to avoid detection by anti-virus software. Some polymorphic virus use different encryption schemes and ...

Piggyback

Software; Anti virus

To piggyback is to gain unauthorised access to a system by exploiting an authorised user's legitimate connection.

Phishing

Software; Anti virus

Phishing is a form of criminal activity using social engineering techniques through email or instant messaging. Phishers attempt to fraudulently acquire other people's personal information, such as ...

Pharming

Software; Anti virus

Pharming is the exploitation of a vulnerability in DNS server software that allows a hacker to redirect a legitimate web site's traffic to a counterfeit web site. The spoofed site is designed to ...

Top of memory (TOM)

Software; Anti virus

It is a design limitation at the 640kb mark on most PCs. Often the boot record does not completely reach top of memory, thus leaving empty space. Boot-sector infectors often try to conceal themselves ...