US warns against Microsoft Outlook vulnerability

The U.S. Cyber Command took to Twitter last week to issue a warning about a 2-year-old vulnerability in Microsoft Outlook that is being exploited by hackers, according to the HIPAA Journal.

Hackers are exploiting the flaw to install malware into government networks. The U.S. Cyber Command recommends users patch the vulnerability immediately to avoid exploitation.

The vulnerability can be exploited when a hacker has an Outlook user's credentials, which can be obtained through phishing attacks.

It is unclear who has been exploiting the vulnerability; however, security researchers are linking the attacks to an Iran-backed cyberespionage group.

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