ransomwareRansomware is a type of malware used for data kidnapping , an exploit in which the attacker encrypt s the victim's data and demands payment for the decryption key . A ransomware program can be installed from an e-mail attachment, an infected program, or a compromised or malicious Web site. Data kidnapping is not new, but has in the past usually targeted businesses rather than individuals. Malware used for this purpose is sometimes called a cryptovirus , cryptotrojan or cryptoworm . In March 2006, ransomware known as Crypzip or Zippo circulated to private users on the Internet. Recipients of the Trojan horse program also received an e-mail demanding $300, to be paid by electronic transfer, for the key required to unlock all their files. Security firm LURHQ, who discovered the exploit, said it was based on a similar scam conducted 15 years ago. Ransomware is said to have originated in Russia, It and other cyberextortion methods, such as DoS extortion , are becoming more common around the world. To protect against data kidnapping -- and many other online crimes -- experts urge that users back up data regularly, practice cautious browsing and refrain from opening unexpected e-mail attachments.
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| Last updated on:
Apr 13, 2006 |
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