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The GuardianVirus-infected computers should be blocked from the internet and kept in quarantine until they are given a "health certificate", a top Microsoft security researcher suggested on Thursday.
Under the proposed security regime, put forward by the technology giant's trustworthy computing team, an individual's internet connection would be "throttled" to prevent the virus spreading to other computers. But security experts today warned that cutting people off from the internet could be a drastic step too far – and that the question of who would issue and verify the "health certificate" was troubling.
... The new proposal, Microsoft claimed, is built on the lessons of public health. Scott Charney, corporate vice president of Microsoft's trustworthy computing team, wrote on the company's blog: "Just as when an individual who is not vaccinated puts others' health at risk, computers that are not protected or have been compromised with a bot put others at risk and pose a greater threat to society."
But Ram Herkanaidu, a global researcher at computer security firm Kaspersky Lab, told the Guardian that cutting people off from the internet was a wrongheaded solution. He said: "This would be a bad idea in practice. Just say your machine was infected – if you could not access the internet, how would you be able to update your anti-virus and also apply any software patches required? Technically, though, an ISP could give limited access to a safe area so that they could get the relevant updates but this would be done by individual ISPs themselves."
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http://www.guardian.co.uk/technology/2010/oct/07/microsoft-virus-computers-quarantined