A self-replicating program that attaches itself to clean file and spreads throughout a computer system, infecting files with malicious code.
A type of malware that is disguised as legitimate software. Cybercriminals trick users into uploading Trojans onto their computer where they cause damage or collect data.
A program that secretly records what a user does, so that cybercriminals can make use of this information. For example, spyware could capture credit card details.
Malware which locks down a user’s files and data, with the threat of erasing it unless a ransom is paid.
Advertising software which can be used to spread malware.
Networks of malware infected computers which cybercriminals use to perform tasks online without the user’s permission.