https://apnews.com/10fb94f6f4ea52987f8089f9df3d3680

WASHINGTON (AP) — Leading technology companies said Tuesday that a months-long breach of corporate and government networks was so sophisticated, focused and labor-intensive that a nation had to be behind it, with all the evidence pointing to Russia.

In the first congressional hearing on the breach, representatives of technology companies involved in the response described a hack of almost breathtaking precision, ambition and scope. The perpetrators stealthily scooped up specific emails and documents on a target list from the U.S. and other countries.