Facebook brings political ads under more scrutiny

That said, it begs the question if the company is secretly deleting Zuckerberg's private messages, a feature that is now not available to other Facebook users.

On Wednesday, Zuckerberg held an extraordinary hour-long call with reporters, during which he admitted to making mistakes - including not anticipating the ways that people could take advantage of the platform's features for questionable purposes. These included limiting the retention period for Mark's messages in Messenger. "AggregateIQ works in full compliance within all legal and regulatory requirements in all jurisdictions where it operates".

Facebook shares headed towards their biggest daily rise in a month at opening on Thursday, after Mark Zuckerberg said the social network had not seen any meaningful impact on usage or ad sales in the wake of the data privacy scandal.

In remarks to Sky TG24, chairman Giovanni Pitruzzella said the main focus of the case will be on the misleading message the social-media company passes on to its users.

"But more sources have come forward since publication, saying theirs disappeared as well", it added. Some advertisers and users have left Facebook, although the company has said it hasn't been a significant number yet.

Facebook made the announcement as Zuckerberg prepared to appear before Congress next week to answer questions about the harvesting of personal data on 87 million users by Cambridge Analytica, a British political consultancy working for Donald Trump's presidential campaign.

The app was developed by University of Cambridge psychology researcher Aleksandr Kogan and his company Global Science Research.

Advertisers and third-party apps have flocked to the social media giant because of its vast user data, with Facebook generating profits of nearly $16 billion past year.

Among those whose information was exposed to the consultancy, 81.6 percent - more than 70.6 million - were users in the U.S. Other countries whose residents' data ended up in Cambridge Analytica's hands included the Philippines (nearly 1.2 million), Indonesia (more than 1 million), the United Kingdom.

Cambridge Analytica, a UK-based data collection and analysis company, was reported on March 19 to have wrongly collected information and data from about 50 million Facebook users around the world.

"I am not going to sit here and say that we're not going to find more because we are", Sandberg said in an interview to NBC.

A Facebook spokesperson has issued a statement to TechCrunch, apologizing for not publicly disclosing the unsend feature sooner.

  • Leroy Wright