TOO CLOSE FOR COMFORT: Russian submarines are hovering near undersea cables that make the global Internet function, raising concerns that the Russians might be planning to attack them in times of tension. “The ultimate Russian hack on the United States could involve severing the fiber-optic cables at some of their hardest-to-access locations to halt the instant communications on which the West’s governments, economies and citizens have grown dependent,” the New York Times reports. “While there is no evidence yet of any cable cutting, the concern is part of a growing wariness among senior American and allied military and intelligence officials over the accelerated activity by Russian armed forces around the globe.”

TEMPORARY WIN FOR FACEBOOK: Facebook won dismissal of a $15 billion lawsuit accusing the company of tracking users’ Internet activity after they log off the site. “U.S. District Judge Edward J. Davila in San Jose, California, on Friday agreed with Facebook’s argument that case should be dismissed because subscribers didn’t specify how they were harmed. The judge, who took more than three years to issue his ruling after hearing arguments in the case, said the users could refile most of their claims in a revised lawsuit,” Bloomberg reports. “Facebook users alleged in a 2012 complaint that while they may have agreed to the company’s installation of ‘cookie’ files on their computers to track and transmit their Web browsing, they didn’t consent to such monitoring after logging out of the social network.”

BIG MONEY FOR CYBER START-UP: A cybersecurity start-up headed by former NSA Director Keith Alexander raised $32.5 million in a “Series A” funding round, the company said Monday. “IronNet says its technology detects and mitigates anomalous activity in a company’s cyber infrastructure using advanced behavioral models and analytics,” Reuters reports. “The funding will help accelerate growth and scale the launch of the IronNet product line, Alexander, the company’s chief executive, said in the statement … Alexander founded the company in 2014 along with former top officials of the U.S. Department of Defense, the National Counterterrorism Center, and the Defense Advanced Research Projects Agency.”