Add Yahoo as a preferred source to see more of our stories on Google. A sweeping hack of the federal judiciary's case filing system exploited unresolved security holes discovered five years ago — ...

Hackers claim to be selling internal Target source code after posting samples online. The data allegedly includes developer files and system tools of a US retailer. This raises concerns about ...

Hackers claiming ties to pro-Ukrainian cyber groups have leaked what they describe as detailed interior photographs and schematics of Russia’s Krasukha-4 electronic warfare jamming system, one of the ...