Dado Ruvic/Reuters
The National Security Agency has spent more than a year investigating a series of catastrophic breaches and has yet to determine whether it’s fighting foreign hackers or a mole inside the agency, The New York Times reports. At the center of the saga is a mysterious group called the Shadow Brokers, which has been taunting the agency with periodic dumps of secret code online—leaks that employees say are much more damaging to national security than the information leaked by former NSA contractor Edward Snowden. Some of the stolen code has been used in global malware attacks such as the WannaCry cyberattack, which crippled hospitals and government institutions across the world. Current and former employees have described a mole hunt inside the agency, with some employees reportedly asked to hand over their passports and undergo questioning. Yet investigators still don’t know who the culprits are, be it an insider who stole an entire thumb drive of sensitive code, or a group of Russian hackers—for some, the prime suspects—who managed to breach NSA defenses. “How much longer are the releases going to come?” one former employee was cited as saying. “The agency doesn’t know how to stop it—or even what ‘it’ is.”