16894392 story Microsoft Eyes PC Isolation Ward To Thwart Botnets 413 Posted by timothy on Thursday October 07, 2010 @08:09PM from the but-you-said-no-malware dept. CWmike writes "In a paper published Wednesday (PDF), Scott Charney, who heads Microsoft's trustworthy computing group, spelled out a concept of 'collective defense' that he said was modeled after public health measures like vaccinations and quarantines. The aim: To block botnet-infected computers from connecting to the Internet. Under the proposal, PCs would be issued a 'health certificate' that showed whether the system was fully patched, that it was running security software and a firewall, and that it was malware-free. Machines with deficiencies would require patching or an antivirus update, while bot-infected PCs might be barred from the Internet."