Facebook the world’s largest social media network has been sued by its users over a 2018 breach. The suit claimed that it failed to warn them about risks tied to its single sign-on tool, even though it protected its employees.

Single sign-on connects the users to third-party apps and services using their Facebook credentials.

Facebook had the worst security breach in September when login codes or “access tokens” were hacked by the hackers, which allowed them to access nearly 29 million accounts, as per the lawsuit.

“Facebook knew about the access token vulnerability and failed to fix it for years, despite that knowledge,” the plaintiffs said in a heavily redacted section of the filing in the US District Court for the Northern District of California in San Francisco.

“Even more egregiously, Facebook took steps to protect its employees from the security risk, but not the vast majority of its users.”

The request for comment was not immediately responded by Facebook.

To uncover how much user data was stolen, Judge William Alsup told Facebook in January, that he was willing to allow “bone-crushing discovery.”

During the initial disclosure of attack, Facebook revealed few details; the hacking of the “access tokens” only affected a “broad” spectrum of users without breaking down the numbers by country.

It has also been revealed that profile details like birth date, employers, education history, religious preferences, types of devices used, pages followed, recent searches and check-ins from about 14 million users had been taken by the hackers.

The investigation also suggests that for the other 15 million users, the breach was restricted to name and contact details. In addition to that, posts, lists of friends and groups of about 4 lakh users could be seen by the attackers.

Facebook said that the attackers did not steal personal messages or financial information nor access the users’ accounts on other websites.

Facebook the world’s largest social media network is aiming to help movie studios promote their latest releases, in essence of this facebook is launching two new ad units which are named movie reminder ads and movie showtime ads.

A person from facebook said that film watchers often discover the details about a movie months before its release but they do need reminders about when the film is going to hit the theatres.

Through the movie reminder ads, whenever the people see an ad for the film in their news feed, they can tap on the ‘Interested’ option to receive a reminder in their facebook notifications about when the movie hits the cinema. The notification received will send the user to the movie information page on Facebook to look for showtimes and also purchase the tickets.

“The notification sends people to the movie detail page on Facebook to look up showtimes and seamlessly purchase tickets,” Facebook said in a statement on Wednesday.

With movie reminder ads, people can easily stay informed about the movies they want to see, and film marketers can reach a group of moviegoers that have indicated strong interest in their film

“We’re also introducing movie showtime ads for films that are already in theatres. Previously, researching showtimes required extra steps and additional searches. Now, when a moviegoer comes across a movie showtime ad, they can tap a ‘Get Showtimes’ button to go right to the Facebook movie detail page to find out where and when to see the film,” the social networking giant said.

Sources revealed that the advertisers testing these solutions are already seeing strong results driving showtime lookups and ticket sales. Universal Pictures used Facebook showtime ads to promote its recent holiday film, “The Grinch,” and saw a significant increase in showtime lookups and ticket purchases.

The new ad units’ movie reminders and movie showtime are currently available for film studios in the US and UK confirmed Facebook.