Vulnerability hoarding and Wcry

A virulent ransomware worm attacked a wide swath of Windows machines worldwide in mid-May. The malware, known as Wcry, Wanna, or WannaCry, infected a number of systems at high-profile organizations as well as striking at critical pieces of the infrastructure—like hospitals, banks, and train stations. While the threat seems to have largely abated—for now—the origin of some of its code, which is apparently the US National Security Agency (NSA), should give one pause.

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