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Affiliate marketers, who buy ad space in bulk, run campaigns, and earn commissions on the sales they generate, are behind some of the shady and misleading ads that pollute social media and the wider internet, despite also promoting some legitimate businesses such as Amazon and eBay. At one of

In 2018, WhatsApp founder Brian Acton responded to the Cambridge Analytica scandal by tweeting "It is time. #deletefacebook." He also left the company, walking away from $850 million in unvested stock rather than accede to Facebook's plans to add advertising and commercial messaging, a purpose at

In October 2018, researcher Johannes Eichstaedt led a project to study how the words people use on social media reflect their underlying psychological state. Working with 1,200 patients at a Philadelphia emergency department, 114 of whom had a depression diagnosis, Eichstaedt's group studied their

After a series of scandals, in the year up to September 2018 54% of American Facebook users had changed their privacy settings and 42% had skipped visiting the platform for several weeks or more. About 26% said they had deleted the Facebook app from their smartphone. Some 74% of Facebook users had

Even after 2015, when Facebook said it had walled off user records from third parties, inside sources and court documents showed that the company went on maintaining a whitelist of companies that were allowed customised access to information about users' Friends, phone numbers, and a "friend link"

In July 2018, Facebook announced it was investigating whether the Boston-based company Crimson Hexagon had violated the company's policies on surveillance. Crimson Hexagon markets itself as offering "consumer insights". Its customers include a Russian non-profit with ties to the Kremlin, and

In May 2018, Facebook said that as part of its investigation into how Cambridge Analytica had abused personal data on the social network, it had investigated thousands of apps on its platform and suspended about 200 of them. The company said it was investigating further to identify every app that

In May 2018 Facebook announced it would partner with organisations in places such as Myanmar and South Sudan in order to develop more "context-specific" knowledge about how its platform is being abused to create real risks of harm and violence. In Myanmar, where telephone companies allowed Facebook

In June 2018 Facebook announced it would install new controls to improve members' understanding of how companies targeted them with advertising, including letting them know if a data broker supplied the information. This was the second update to the company's policies in 2018; in March it attempted

In 2018, experiments showed that despite the company's denials, ads could be targeted at specific Facebook users via information that the users had never given Facebook, such as phone numbers. The reason: Facebook allows advertisers to upload their own lists of phone numbers of email addresses, and

"Buzzer teams" - teams employed to amplify messages and create a buzz on social media - were used by all candidates in the 2017 Indonesian general elections. Coordinated via WhatsApp groups, many of the teams opened fake accounts to spread both positive and negative messages, as well as hate speech

Facebook ads purchased in May 2016 by the Internet Research Agency, a notorious Russian troll farm, urged users to install the FaceMusic app. When installed, this Chrome extension gained wide access to the users' Facebook accounts and web browsing behaviour; in some cases it messaged all the user's

In March 2018, Indian Congress president Rahul Gandhi tweeted that the Naramendra Modi app issued by India's ruling Bharatiya Janata Party was leaking user data. The app is intended to spearhead BJP's social media strategy in the run-up to the 2019 general elections; the party hopes to use it to

In the run-up to the November 2018 US midterm elections, Vice tested Facebook's new system of mandatory "Paid for" disclosure intended to bring greater transparency to the sources of ads relating to "issues of national importance". Placing political ads requires a valid ID and proof of residence

In the run-up to the 2018 US mid-term elections, researchers found that the dissemination of fake news on Facebook was increasingly a domestic American phenomenon rather than, as in the 2016 presidential election, an effort driven by state-backed Russian operatives. Removing such accounts (Twitter)

In July 2018, the leader of a private Facebook group for women with the BRCA gene, which is associated with high breast cancer risk, discovered that a Chrome plug-in was allowing marketers to harvest group members' names and other information. The group was concerned that exposure might lead to