What We Know About Russia's Alleged Hack Of The U.S. Government And Tech Companies
NPRWhat We Know About Russia's Alleged Hack Of The U.S. Government And Tech Companies Enlarge this image toggle caption Bill Clark/CQ-Roll Call, Inc via Getty Imag Bill Clark/CQ-Roll Call, Inc via Getty Imag A massive computer breach allowed hackers to spend months exploring numerous U.S. government networks and private companies' systems around the world. After several days of saying relatively little, the U.S. Cybersecurity and Infrastructure Security Agency on Thursday delivered an ominous warning, saying the hack "poses a grave risk" to federal, state and local governments as well as private companies and organizations. "The attack unfortunately represents a broad and successful espionage-based assault on both the confidential information of the U.S. government and the tech tools used by firms to protect them," Microsoft's President Brad Smith wrote. Security analysts said the malicious code gave hackers a "backdoor" — a foothold in their targets' computer networks — which they then used to gain elevated credentials.