Was your Facebook data shared with Cambridge Analytica? The political research firm harvested the personal information of roughly 87 million people to target American voters, using a personality quiz called "This Is Your Digital Life" that scraped the Facebook data of you and your friends. The revelation sparked big changes in the way Facebook handles third-party apps, and the social network recently started notifying users who had their information scooped up. If you haven't seen the prompt in your News Feed, you can check if your Facebook data was shared with Cambridge Analytica by logging into the network and visiting this help page. The section titled "Was my information shared?"

Ten New Zealanders who downloaded an app on Facebook could have exposed up to 63,714 of their compatriots to the data mining tactics of Cambridge Analytica. Facebook has told the country's privacy commissioner that it is in the process of alerting New Zealanders who were affected by the breach, which occurred when ten users downloaded a personality quiz app. "For New Zealand, we estimate a total of 63,724 people may have been impacted – 10 are estimated to have downloaded the quiz app with 63,714 friends possibly impacted," said Antonia Sanda, head of communications for Facebook in Australia and New Zealand. New Zealand's privacy commissioner, John Edwards, said he was urgently seeking further information from Facebook on how New Zealanders data was used by Cambridge Analytica, and is working closely with his counterparts in the US, UK Australia and Canada to establish the severity and ramifications of the privacy beach. "I think we have some real information deficits that I hope my colleagues in the UK and the US will uncover ... I am not sure New Zealanders were'targeted' but I think there is a level of complacency [in New Zealand]. And when you say we're so far away, we're only one click away really," Edwards said.

Cambridge Analytica is facing incredible pressure over the Facebook data sharing scandal -- and not surprisingly, it's determined to share its version of events before Mark Zuckerberg testifies in congressional hearings. The company has posted a "series of facts" that challenge some of the allegations made against the company. Not surprisingly, it started by insisting that it didn't do anything illegal: GSR "legally obtained" the data about Facebook users, and "did not illegally or inappropriately" scoop up and share data. Later on, it maintained that it "only collects data with informed consent." After that, Cambridge Analytica jumped into specifics.

There's more data to protect than just your Facebook profile. Facebook News Feeds will alert users if their data was improperly obtained by Cambridge Analytica. With Facebook CEO Mark Zuckerberg set to testify before Congress on the scandal involving data firm Cambridge Analytica, the social network is informing individual users their profiles may have been used for the firm's political targeting without their consent. Starting at noon ET Monday, Facebook was scheduled to begin alerting users if they were some of the estimated 87 million whose profiles Facebook says were scraped and improperly shared with Cambridge Analytica. What users will do with that information boils down to engaging in the boring but eye-opening privacy clean-ups many have already embarked on, finding all the apps that had access to your info and then cutting this access off. Bad news: with the data leak over three years old, it's too late to take what's already out there back.

Facebook founder Mark Zuckerberg has been receiving special coaching on how to present himself when he appears before US politicians demanding to know what he is doing to protect users' data, and how Russia was able to use his platform to allegedly meddle in the 2016 presidential election. Amid continuing controversy over the inappropriate harvesting of the data of up to 87 million Facebook users by British political consulting firm Cambridge Analytica, Mr Zuckerberg will try and reassure Congress he is taking the concerns of them and the general public seriously. He will also try to deflect the efforts of those who favour more stringent government regulation. "It's clear now that we didn't do enough to prevent these tools from being used for harm," he is expected to tell the House Committee on Energy and Commerce, according to written testimony released ahead of his appearance. "We didn't take a broad enough view of our responsibility, and that was a big mistake. It was my mistake, and I'm sorry. I started Facebook, I run it, and I'm responsible for what happens here."

Facebook is contacting users whose data it says may have been shared with Cambridge Analytica, with around 87 million people expected to receive a message in their newsfeed from Monday. The platform says the majority of users who could be affected – around 70 million – are in the US, but some will be in the UK. We would like to hear from people who see the message, and to find out more about how you think Facebook has handled the situation. Are you one of the 87 million users Facebook says it is contacting? Are you aware of any connections or settings that may have made your data vulnerable?

Future Tense is a partnership of Slate, New America, and Arizona State University that examines emerging technologies, public policy, and society. Facebook suspended two companies from its platform over the weekend for improper data collection. The social media giant has been racing to address privacy concerns in light of revelations that data firm Cambridge Analytica accessed private data from as many as 87 million accounts and later used it to support Donald Trump's presidential campaign. Late on Friday, Facebook responded to reports that the Canadian political consulting firm AggregateIQ is affiliated with Strategic Communication Laboratories (SCL), the parent company of Cambridge Analytica. "In light of recent reports that AggregateIQ may be affiliated with SCL and may, as a result, have improperly received FB user data, we have added them to the list of entities we have suspended from our platform while we investigate," Facebook said in a statement.

In 2014, a researcher named Alexander Kogan created a personality quiz that 270,000 Facebook users would go onto install. From those downloads alone, he was able to harvest the personal information of up to 87 million people, according to Facebook's most recent estimate. He then passed that data along to Trump-affiliated political firm Cambridge Analytica, which would use it to target voters in the 2016 presidential election. Now Facebook has finally released a tool that lets you know if you were affected. Beginning at noon ET on Monday, some Facebook users will see one of two messages at the top of their News Feed.

Facebook has said it believes that up to 87 million users' data was improperly shared with Cambridge Analytica.

The Facebook crisis involving Cambridge Analytica's data breach leads many to question how Facebook treats their users' data; Reaction on'Outnumbered.' The man who revealed the Cambridge Analytica data-harvesting scandal said Sunday he believed the political consulting firm snatched information from more than the previously reported 87 million Facebook users. "I think that there is, you know, a genuine -- a genuine risk that this data has been accessed by quite a few people. And that it could be stored in various parts of the world, including Russia, given the fact that, you know, the professor who was managing the data harvesting process was going back and forward between the U.K. and to Russia," Christopher Wylie said on NBC News' "Meet the Press." Wylie was referring to Aleksandr Kogan, whose company, Global Science Research, harvested Facebook's data using a personality app, according to officials.