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Spyware 'calling home' volumes soar

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Outbound spyware transmissions from infested machines accounted for up to eight per cent of total outbound web traffic in pilot tests of a new managed spyware screening service. UK web security firm ScanSafe said the volume of traffic observed during a 10-week pilot test of its Spyware Screening service showed that spyware applications are becoming stealthier in their ability to hide their outbound 'covert' channels among normal web traffic. That's bad news because data sent when spyware "calls-home" can include confidential and even privileged information.

Spyware now accounts for around 20 per cent of web-based threats, which includes other malware such as worms and Trojans, and is still on the increase, according to ScanSafe. The firm said malware such as CoolWebSearch, which hides on an infected client using newly developed root-kit architecture, often evades detection. ®

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