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ransomware

 

Ransomware is a form of malware in which rogue software code effectively holds a user's computer hostage until a "ransom" fee is paid. Ransomware often infiltrates a PC as a computer worm or Trojan horse that takes advantage of open security vulnerabilities. Most ransomware attacks are the result of clicking on an infected e-mail attachment or visiting a hacked website.

Upon compromising a computer, ransomware will typically either lock a user's system or encrypt files on the computer and then demand payment before the system or files will be restored.

Also see The Difference Between a Virus, Worm and Trojan Horse  and Rogue Anti-Virus Software Explained in the Did You Know? section of Webopedia.







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