Hackers linked to Iran are probing American companies for vulnerabilities, cybersecurity researchers and U.S. government officials say.
The warnings suggest that the next phase of hostilities between the U.S. and Iran, following the Jan. 3 killing of a top Iranian general in an American drone strike, is likely to play out in cyberspace.
The Iranian regime is accused of being behind some high-profile online operations against American targets in recent years.
Between 2011 and 2013, hackers targeted big American banks including JPMorgan Chase, Bank of America and Capital One. They flooded the banks’ computer networks with traffic, knocking them offline and costing millions of dollars in lost business.