Agencies from Social Security to the IRS store sensitive data on millions of Americans. Here's what the government knows about us – and what's at risk as DOGE seeks access to the data.

For 50 years, a secretive group of government workers has been preparing for the worst. Here's a rare look inside the team that's ready to respond to a nuclear incident anywhere, anytime.

The U.S. government and Microsoft reveal Chinese hackers broke in to online email systems and stole some unclassified data.