The international intelligence agency always has a keen interest in Iran's hacking activity. And new research published by the security firm FireEye on Thursday indicates the country's efforts show no signs of slowing. In fact, a new network reconnaissance group— FireEye calls them Advanced Persistent Threat 34—has spent the last few years burrowing deep into critical infrastructure companies.

Given how aggressively Iran has pursued infrastructure hacking, previously targeting the financial sector and even a dam in upstate New York, the new findings serve as a warning, and highlight the evolving nature of the threat.

FireEye researchers tracked 34 of the group's attacks on institutions in seven Middle Eastern countries between 2015 and mid-2017, but says APT 34 has been operational since at least 2014. The group appears to target financial, energy, telecommunications, and chemical companies, and FireEye says it has moderate confidence that its hackers are Iranians. They log into VPNs from Iranian IP addresses, adhere to normal Iranian business hours, their work has occasionally leaked Iranian addresses and phone numbers, and their efforts align with Iranian interests. Namely, targeting the country's adversaries.

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