Facebook to create Dating profiles

Under this feature, users can create a separate dating profile not visible to their friends, with matches recommended based on provided dating preferences, common interests and mutual friends.

It will be free. The announcement sent shares in the online dating giant Match.com tumbling, finishing the formal trading day down 22 per cent

Facebook CEO also announced that the dating offer was created with privacy and safety in mind.

Facebook has admitted over 80 million users may have had their data hijacked in the scandal, which saw Zuckerberg grilled at length by the US Congress about four weeks ago

"We need to make sure that never happens again," Zuckerberg said to the audience.

Facebook has already moved to limit the amount of data it shares with third-party applications.

Facebook is also reviewing applications overall as well as auditing those that accessed large amounts of data to make sure access isn't misused.

"Security isn't a problem that you ever fully solve," Zuckerberg said, outlining the show of efforts by Facebook to battle election interference, misinformation, spam among other challenges.

"This is an arms race; we are going to be working to stay ahead of our adversaries forever."

Zuckerberg's blend of humour, humility, confidence and determination in a presentation seemed to resonate with the gathering of developers, who credited Facebook with taking responsibility for problems and working on fixing them