People around the world are receiving a highly suspicious software bulletin through the official Windows Update, raising concerns that Microsoft's automatic patching mechanism may be broken or, worse, has been compromised to attack end users.
This Web search, which queries the random-appearing string included in the payload, suggests that it's being delivered to people in multiple regions. The same unexplained and almost certainly unauthorized patch is being reported in a variety of online posts, including this one hosted by Microsoft. The updates appear to be coming directly from servers that are cryptographically certified to be part of Microsoft's Windows Update system.
"Clearly there's something that's delivered into the [Windows Update] queue that's trusted," Kenn White, a North Carolina-based computer scientist, told Ars after contacting some of the Windows users who received the suspicious update. "For someone to compromise the Windows Update server, that's a pretty serious vector. I don't raise the alarm very often but this has just enough characteristics of something pretty serious that I think it's worth looking at."
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