Facebook

30 million users had their accounts breached, with a total of 90 million accounts reset after Facebook's "view as" feature leaked unique user account access tokens, allowing attackers to not only trivially impersonate any other user on the platform, but also to potentially automate the attack on a

In December 2017, the German cartel office presented preliminary findings in an investigation of Facebook, ruling that the company had abused its dominant position by requiring access to third-party data (including data from subsidiaries WhatsApp and Instagram) when an account is opened and tracking

In September 2017, the Spanish national data protection regulator fined Facebook €1.2 million, alleging that the company collected personal information from Spanish users that could then be used for advertising. The investigation, which took place alongside others in Belgium, France, Germany, and

In May 2017, the European Commission fined Facebook $122 million for providing incorrect or misleading information during its 2014 acquisition of WhatsApp. At the time of the acquisition, Facebook assured the EC that it would not be able to link its accounts database to that of WhatsApp. After the

In May 2017, the French data protection regular, CNIL, fined Facebook €150,000 saying the company had failed to inform users properly about how their personal data is tracked and shared with advertisers. The regulator did not, however, order the company to change its practices. The decision was one

In June 2015, the Belgian data protection regulator, Commission for the Protection of Privacy, launched a complaint that Facebook indiscriminately tracked internet users when they visited Facebook pages or clicked Like or Share, even when they are not Facebook members. In November 2015, the Court of

In January 2013, Facebook upgraded its search tool to enable the site to answer more complex questions. Called Graph Search, the new tool aimed to make it possible for users to find businesses and each other based on location, personal history, personal interests, and mutual friends. The site

In 2015, Facebook created the "Free Basics" programme, in which the company partnered with telephone carriers in various countries to offer free access to Facebook - that is, using Facebook would not count against their data plan. While critics argued the plan is anti-competitive, violates the

Nearly 700,000 Facebook users were subjects of a research study where researchers changed randomly selected users' newsfeeds to be more positive or negative to study whether those users then displayed a more positive or negative affect in response. The experiment showed the power of Facebook's control over the News Feed and the algorithms that determine which of the possible pieces of content shows up at the top at any given moment.

In 2012, Facebook CEO Mark Zuckerberg's sister, Randi, tweeted to fellow Twitter user Callie Schweitzer that Schweitzer had violated her privacy by posting a picture taken in her kitchen. Randi Zuckerberg, the former head of Facebook's marketing department, had posted the picture, which was taken in

In November 2011, the US Federal Trade Commission charged Facebook with repeatedly breaking the privacy promises it made to users. Among the list of deceptive practices and incidents in the FTC's complaint were December 2009 changes Facebook made to its site that publicly exposed information users

In June 2011, Facebook enabled an automatic facial recognition called "Tag Suggestions" based on its research project DeepFace, requiring users who objected to opt out. The feature scanned the faces in newly uploaded photographs and compared them to those in the billions of images already on the

In early 2011, Facebook launched "Sponsored Stories", an advertising product that used content from members' posts inside ads displayed on the service. Drawing on Likes, check-ins, and comments, a Sponsored Story might use a member's photograph and their comments from a coffee shop to create an ad

In October 2010, the Wall Street Journal discovered that apps on Facebook were sending identifying information such as the names of users and their Friends to myriad third-party app advertising and internet tracking companies. All of the ten most popular Facebook apps, including Zynga's FarmVille

When journalist Alex Hern needed to set up a Facebook account in order to manage the Guardian's technology page and other work-related things, he locked down its privacy settings so that the account's profile would not appear in searches and only Friends of Friends could add him as a friend. In