ESET: at least ten, mostly state-backed, hacking groups are exploiting Microsoft Exchange vulnerabilities on thousands of servers in over 115 countries (Patrick Howell O'Neill/MIT Technology …)

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Patrick Howell O’Neill / MIT Technology Review:

ESET: at least ten, mostly state-backed, hacking groups are exploiting Microsoft Exchange vulnerabilities on thousands of servers in over 115 countries  —  Days before Microsoft released a fix for a secret attack on its email systems, hackers ramped up their activity.  Now experts say swift action is required.