Ever since the scandal came to light in February, Facebook has been having a tough time dealing with accusations that the company was responsible for the leak of personal data of millions of users.
"I would not assume that it is private that it's not being collected and tracked by Facebook - it is", she said.
"The whole fantasy that people care about privacy or they're desperate to get out of ad-supported networks is ridiculous", said Clay Shirky, a researcher on the social and economic effects of internet technologies at New York University.
Pivotal Research Group analyst Brian Wieser predicted scrutiny on Facebook will intensify. Any violations of the 2011 agreement could subject Facebook to fines of $41,484 per violation per user per day.
As users of Facebook, we should be concerned about the status of our privacy.
Mr Grassley's panel is the third U.S. congressional committee to seek out Mr Zuckerberg's testimony in the wake of the Cambridge Analytica scandal, the Associated Press reports.
To achieve their model of Silicon Valley success over the past decade, the business veteran worked hand in glove with the less experienced founder to build a business that generates billions of dollars by getting people to open up about their lives. "Facebook has been extremely successful in developing tools and algorithms to stop certain types of content from being pushed on the site, and we're hopeful they will do the same to stop the sale of drugs", he added.
Last month, Facebook announced a redesign of the entire settings menu on mobile devices from top to bottom to bring in controls that are easier to find and use.
In the meantime, Facebook has adapted more about Sadia's group of friends - notwithstanding the way that Sadia has never utilized Facebook, and thusly has never consented to its strategies for information gathering.
"Most of the reforms Facebook has talked about in the past couple of weeks proposed safeguards that should have been in place years ago", he said by email following 10 hours of Zuckerberg's testimony.
The Facebook platform that allows software developers to reach Facebook users does not fall under Sandberg's area of responsibility.
The firm was employed by the Trump campaign for the 2016 presidential election.
"Google should be at the centre of the more holistic conversation about data regulation and ethics They have significantly more data, both in terms of quantity and sensitivity, than Facebook, Amazon and (major data-broker) Acxiom combined", he said. "I think it's those kinds of manipulation of policy messages or political messages that potentially undermined the civil discourse and the kind of nation that we started out as". Scott Steinberg, the co-founder of Data Does Good, whose users donate to non-profits through selling their anonymous Amazon shopping histories, says the haphazard public conversation over data privacy is dominated by news-making flare-ups, like the Cambridge Analytica episode. And she has defended the business that relies on the mass collection of Facebook users' data, saying it benefits consumers.
Also on Monday, a bipartisan group of attorneys-general representing 37 U.S. states wrote a joint letter to Facebook demanding answers to what led to the breach and how the company allowed it to happen.
Facebook COO Sheryl Sandberg speaks to guests gathered for a "birthday" celebration at Facebook headquarters in Menlo Park, Calif., on January 31, 2017.
I'm sure I've shared more things than I could remember.