In just a single decade, data has transformed from fleeting digital traces into the “oil of the 21st century”—a raw material to be extracted, processed, and sold. Big Tech companies are no longer ...

They called him crazy. They called him reckless. But Frank Heister calls himself a rebel — and he wouldn’t have it any other way.

Dozens of reporters turned in access badges and exited the Pentagon on Wednesday rather than agree to restrictions on their ...