Viruses

Viruses

E-Mail Viruses -

Attaches itself to emails and replicates by posting itself to names found in the victim's e-mail address book.

Worms -

A worm is any self-replicating software that inserts itself in a computer by exploiting weaknesses in a system, invading the system one machine at a time.

Trojan -

A malicious or nuisance programme that masquerades as another type of programme, for example a game or utility.

Macro Virus -

This can only be spread via applications such as Word and Excel which have Macro capabilities.

Distribution can be via e-mail attachments, from a modified programme, a malicious cracker or social engineer, as a macro.

Defences include firewalls, soft and preferably hard and anti virus software such as Mcaffee and Norton.