How the NSA Spied on Antivirus Companies to Make Undetectable Malware

Russian antivirus company Kaspersky revealed recently that it was the target of hackers behind the Stuxnet and Duqu worms last year. The hackers have been attacking the company’s network for months, collecting data on its operations and software. But it turns out that intelligence agencies including the NSA and GCHQ have spied on antivirus companies for years, looking for exploitable vulnerabilities.

The new report comes from newly leaked documentation from NSA-whistleblower Edward Snowden, who made them available to The Intercept.