IT security
Hackers encrypt data then demand payment for decryption
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Web attack extorts by encryption

Pay up or you'll never see your data again

Iain Thomson, vnunet.com 05 Oct 2005
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Security experts today warned of a newly discovered attack in which hackers encrypt data on a compromised PC and demand payment for the decryption key.

The attacks typically start when a user with an improperly patched version of Internet Explorer visits a web page containing malware that downloads a Trojan.

This encodes all files on the local hard drive, as well as any network drives it can reach, and opens a message such as: 'Decoder costs $2000. Send $2000 to e-gold account. Send message about it and I send program to your email.'

Web monitoring firm Websense said in its twice-yearly report on web security that it first came across attacks of this kind in May, but did not say whether any companies have paid for the decryption tool.

A PDF of the Websense report can be downloaded here

See also:

Security firms cancel summer holiday plans  21 Jun 2005
Viruses and malware push sales of network security appliances and softwareSales to grow by almost a third at the start of next year  02 Jun 2005
Exploit code should be used to test computer securityTime to learn the tricks of the trade, says security expert  21 Feb 2005

All Hacking

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