Hackers captured data from 30 million Facebook users in September. For 1 million people, the attackers did not access any information.
Facebook said that the FBI is investigating, but may not be asked the company that not to discuss who may be going behind the attack of the same, the Facebook also said that it has not ruled out the possibility of smaller-scale attacks that used the same sort of vulnerability. They used an automated technique to move from account to account so they could steal the access tokens of those friends, and for friends of those friends, and so on, totaling about 400,000 people.
Since then, the social media giant has further confirmed that 29 million of those users had their names, contact data and more stolen by the hackers. Some of that data-including phone numbers, email addresses, birth dates, searches, location check-ins, and the types of devices used to access the site-came from private accounts or was supposed to be restricted only to friends.
In the coming days Facebook will be sending out personalized messages to each of the accounts compromised, detailing the extent of the information stolen and advice on how to avoid any damage the data theft could cause.
It will also provide information specific to your account if you are logged into Facebook. So, this was done with more profiles on Facebook.
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The attackers exploited a series of bugs on Facebook's platform.
"We have not ruled out the possibility of smaller-scale attacks, which we're continuing to investigate", he added. The company said they wanted to figure out exactly what had happened and help users understand the situation. For users that weren't affected, they don't need to take any immediate steps. Since not in all cases they have had access to the same information in these profiles.
This messaging breach could have impacted 400,000 users, including political groups.
"First, the attackers already controlled a set of accounts, which were connected to Facebook friends".
The cyberattack did not affect Messenger, Messenger Kids, WhatsApp, Instagram, Workplace, Oculus, Pages, third-party apps, payments or developer accounts or advertising said the company.
It follows news the social media network had almost 30 million accounts hacked between September 14 and 27. Message content was not available to the attackers, with one exception.