A Trump administration official tells Axios that the cyberattack on the U.S. government and corporate America, apparently by Russia, is looking worse by the day — and secrets may still be being stolen in ways not yet discovered.

The big picture: “We still don’t know the bottom of the well,” the official said. Stunningly, the breach goes back to at least March, and continued all through the election. The U.S. government didn’t sound the alarm until this Sunday. Damage assessment could take months…

Imagine if during the Cold War, the Soviet Union had broken into a building in Washington and walked out with correspondence, budgets and more.

Sen. Chris Coons (D-Del.) told Andrea Mitchell on MSNBC: “It’s pretty hard to distinguish this from an act of aggression that rises to the level of an attack that qualifies as war. … [T]his is as destructive and broad scale an engagement with our military systems, our intelligence systems as has happened in my lifetime.”