But legislators are also expected to press him on a range of issues,including the 2016 election.
"It’s clear now that we didn’t do enough to prevent these tools from being used for harm..."his testimony continued."That goes for fake news,foreign interference in elections,and hate speech,as well as developers and data privacy."
Facebook,which has 2.1 billion monthly active users worldwide,said on Sunday it plans to begin on Monday telling users whose data may have been shared with Cambridge Analytica. The company's data practices are under investigation by the US Federal Trade Commission.
Loading
London-based Cambridge Analytica,which counts US President Donald Trump’s 2016 campaign among its past clients,has disputed Facebook’s estimate of thenumber of affected users.
Zuckerberg also said that Facebook's major investments in security"will significantly impact our profitability going forward."Facebook shares were up 2 percent in midday trading.
Facebook has about 15,000 people working on security and content review,rising to more than 20,000 by the end of 2018,Zuckerberg's testimony said."Protecting our community is more important than maximizing our profits,"he said.
Mark Zuckerberg,pictured arriving at Capitol Hill on Monday,has taken ownership for the various scandals engulfing the social media network.Credit:AP
As with other Silicon Valley companies,Facebook has been resistant to new laws governing its business,but on Friday it backed proposed legislation requiring social media sites to disclose the identities of buyers of online political campaign ads and introduced a new verification process for people buying “issue” ads,which do not endorse any candidate but have been used to exploit divisive subjects such as gun laws or police shootings.
Loading
The steps are designed to deter online information warfare and election meddling that US authorities have accused Russia of pursuing,Zuckerberg said on Friday. Moscow has denied the allegations.
Zuckerberg's testimony said the company was"too slow to spot and respond to Russian interference,and we’re working hard to get better."
He vowed to make improvements,adding it would take time,but said he was"committed to getting it right."
A Facebook official confirmed that the company had hired a team from the law firm WilmerHale and outside consultants to help prepare Zuckerberg for his testimony and how lawmakers may question him.
Reuters