In 2012, Facebook agreed to stop using face recognition technology in the European Union after Caspar, the Hamburg data protection commissioner, accused it of violating German and European privacy regulations by collecting users' biometric facial data without their explicit consent. The updates will be rolled out globally over the next two weeks.
According to Tech Crunch, the changes are focused on centralising a variety of controls that were previously located in other places.
Baser clarified that the data received from other websites and apps also helped Facebook improve the content and ads shown on the social networking site. "In fact, most websites and apps send the same information to multiple companies each time you visit them".
In a blog post, Facebook product management director David Baser went over how the company gathers user data from other websites and apps, what they do with the data and what controls users have over this data.
The company said it would review all legitimate reports and respond as quickly as possible when a credible threat to user data is identified.
In one of the toughest exchanges on Wednesday, Representative Anna Eshoo, Democrat of California - who represents a slice of Silicon Valley - repeatedly needled Zuckerberg for failing to explain its data collection practices to users in "clear and pedestrian language". "I think there are a number of areas of content we need to do a better job of policing on our service, " Zuckerberg replied.
Advocates and lawmakers say they are singling out Facebook because of its size, rivaled outside China only by Alphabet Inc's (GOOGL.O) Google, and because they allege Zuckerberg was not forthcoming about the extent and reasons for the tracking. This would allow Facebook to recruit new users younger than the current minimum age of 13, even as young as 6.
Zuckerberg says Facebook "failed" to protect people's information following the use by Cambridge Analytica of data scraped from 87 million Facebook users to target political ads ahead of the 2016 USA presidential election.
"Of all the social media that are out there, Facebook and Instagram provide the most available targeting options", she said.
The majority of those whose information was shared with the data analytics firm - about 70 million - are in the US. For the first time, Zuckerberg said that his data was swept up by an app that fed data on 87 million users to Cambridge Analytica.
According to the law, organisations will be held accountable for the personal data they collect from people.
In addition, supposedly the company is investigating any application that had access to people's information before they prevented such access in 2014 which was something that had not happened prior to the Cambridge Analytica case. That is a population recently targeted by Facebook with the development of its application "Facebook Messenger Kids".