Facebook's Sandberg: We Were 'Too Slow' to Act on Russian Election Interference

Facebook's No. 2 executive has told a Senate committee that Facebook has made progress in addressing the issue of meddling by foreign interests in U.S. elections after realizing it had been "too slow to act" on the problem.

“We were too slow to spot this and too slow to act. That is on us,” Sheryl Sandberg told the Senate Intelligence Committee during a hearing on Capitol Hill Wednesday.

“We’re getting better at finding and stopping our opponents.”

Sandberg also said security efforts to combat such threats are never finished.

She told the Senate intelligence committee that Facebook is "more determined" than adversaries seeking to interfere in American democracy. Sandberg said Facebook is working with outside experts, law enforcement and government, and she acknowledges that Facebook doesn't always have the expertise to determine the source of such threats.

Sandberg said "we are more determined than our opponents and we will keep fighting." She calls the fight an "arms race," as Facebook CEO Mark Zuckerberg has in the past.

This report contains material from The Associated Press.