Critical networks in US, 15 other nations, completely owned, possibly by Iran

For more than two years, pro-Iranian hackers have penetrated some of the world's most sensitive computer networks, including those operated by a US-based airline, auto maker, natural gas producer, defense contractor, and military installation, security researchers said.

In many cases, "Operation Cleaver," as the sustained hacking campaign is being dubbed, has attained the highest levels of system access of targets located in 16 countries total, according to a report published Tuesday by security firm Cylance. Compromised systems in the ongoing attacks include Active Directory domain controllers that store employee login credentials, servers running Microsoft Windows and Linux, routers, switches, and virtual private networks.

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