Inside the OPM Hack, the Cyberattack That Shocked the US Government

On April 15, 2015, a network engineer noticed a strange signal emanating from the US Office of Personnel Management. That was just the tip of the iceberg. By Brendan I. Koerner.
Read more: https://www.wired.com/2016/10/inside-cyberattack-shocked-us-government/?source=Snapzu