The Treasury Department of US on Thursday slapped six Russian technology companies with sanctions for supporting Kremlin intelligence agencies engaged in “dangerous and disruptive cyber attacks.” But only one of them stands out for its international footprint and partnerships with such IT heavyweights as Microsoft and IBM. That company, Positive Technologies, claims more than 2,000 customers in 30 countries, including major European banks Societe Generale and ING, as well as Samsung, SK Telecom of South Korea and BT, the British telecommunications giant. Also read: Microsoft server hack has victims hustling to stop intruders Its clients also include the FSB, a successor to the KGB that “cultivates and co-opts criminal hackers” who carry out ransomware and phishing attacks, the Treasury Department said. The U.S. said big conventions hosted by Positive Technologies are “used as recruiting events” by the FSB and the GRU, Russia’s military intelligence agency. GRU agents are the swashbucklers of Russian intelligence. The agency stands accused of spearheading the hack-and-leak operation that interfered in the 2016 U.S. presidential election to favor Donald Trump. Its agents also conducted the most damaging cyberattack on record, the runaway 2017 NotPetya virus that did more than $10 billion in global damage, its victims including the shipping giant Maersk and pharmaceutical company Merck. The CEO of the software industry-supported Internet Research Institute in Moscow, Karen Kazaryan, said he was not familiar with most of the Russian IT companies sanctioned on Thursday. But Positive Tech is well-known in the industry for its annual Hack Days conference, which is scheduled for May 20-21 at a Moscow hotel. Also read: Microsoft buying speech recognition firm Nuance in $16B deal Former CIA analyst Michael van Landingham applauded the naming and sanctioning of Russian IT companies known to have aided and abetted malign government activity. “Naming specific companies can create incentives for educated and skilled Russians who might be able to obtain jobs elsewhere where they don’t support Russian state hacking,” he said. Positive Tech’s specialty is identifying vulnerabilities in popular software such as Microsoft’s Windows operating system. The world’s intelligence agencies regularly lean on companies like it not to disclose potent vulnerabilities publicly when they find them but to instead quietly share them for hacking adversaries’ networks. The U.S. did not accuse Positive Technologies of any such behavior and the Treasury Department declined to answer questions about the company’s activities beyond a press release.