due to causing system failure, wasting computer resources, corrupting data, increasing maintenance costs, etc.
In today’s networks, cyber-attacks cause damage or theft and disrupt services with enormous economic and financial impacts.
Current methods to protect end-user systems rely on user cooperation to install new system patches or upgrade security software, with low speed.
The term computer virus, coined by Fred Cohen in 1985, is a misnomer.
Viruses often perform some type of harmful activity on infected host computers, such as acquisition of hard disk space or central processing unit (CPU) time, accessing private information (e.g., credit card numbers), corrupting data, displaying political or humorous messages on the user's screen, spamming their e-mail contacts, logging their keystrokes, or even rendering the computer useless.
was an example of a virus which was not malicious software (malware), but was putatively benevolent (well-intentioned).