But the negative press hasn't deterred users, Zuckerberg said, in response to a question from a Senator Ron Johnson, R-Wis.
But senators showed no sign of doing anything as useful as that, so Zuck's net worth has soared.
"In principle, I think that that makes sense, and the details matter, and I look forward to having our team work with you on fleshing that out", Zuckerberg said.
Beginning at noon Eastern time on Monday, users should start seeing one of two messages at the top of their Facebook feed with the header "Protecting Your Information".
Zuckerberg paused for a full eight seconds, chuckled, grimaced before ultimately responding with "no". He insists that Facebook is an "idealistic" company that did not consider the possibility that its users data could be weaponized for electoral purposes.
"There are people in Russian Federation whose job it is to try to exploit our systems and other internet systems and other systems as well", he said.
'It was my mistake, and I'm sorry,' Zuckerberg says at hearing
Mr Zuckerberg, the CEO of the multi-billion-dollar company, accepted personal responsibility for the leak of users' data in the wake of the Cambridge Analytica scandal.
Facebook chief Mark Zuckerberg placed the blame for privacy and security lapses at the world's largest social network squarely on himself as he girded for appearances this week on Capitol Hill before angry lawmakers.
After the hearing, Zuckerberg said the social media platform has been investigating data gathering apps and he wants to prevent future interference in elections. "They are going to keep on getting better at this and we need to".
"When we heard back from Cambridge Analytica that they had told us that they weren't using the data and deleted it, we considered it a closed case".
Given the fallout from the Cambridge Analytica data breach scandal, it was expected the Facebook founder would eventually find himself in the hot seat. not a "booster seat".
While not everyone has received the notification yet, Facebook's help center now has a section that tells users whether they or their friend (s) were affected. In Myanmar, human rights groups say Facebook has been too slow to take down hateful posts about Rohingya Muslims.