Spamming

internet hosting service used by cyber-criminal enterprises

posts on Internet forums that contains related or unrelated advertisements

bulk unsolicited automatic phone calls using VoIP

windows-platform based Trojan horse computer malware

Gumblar is a malicious JavaScript trojan horse file that redirects a user's Google searches, and then installs rogue security software. Also known as Troj/JSRedir-R this botnet first appeared in 2009.

Blacklisting is the action of a group or authority compiling a blacklist of people, countries or other entities to be avoided or distrusted as being deemed unacceptable to those making the list; if people are on a blacklist, then they are considered to have done something wrong, or they are considered to be untrustworthy. As a verb, blacklist can mean to put an individual or entity on such a list. A blacklist is synonymous with a list of banned persons or organizations, and is the opposite of a whitelist.