Facebook oauth access token | Breaking Cybersecurity News | The Hacker News

When Facebook last weekend disclosed a massive data breach—that compromised access tokens for more than 50 million accounts —many feared that the stolen tokens could have been used to access other third-party services, including Instagram and Tinder, through Facebook login. Good news is that Facebook found no evidence "so far" that proves such claims. In a blog post published Tuesday, Facebook security VP Guy Rosen revealed that investigators "found no evidence" of hackers accessing third-party apps with its "Login with Facebook" feature. "We have now analyzed our logs for all third-party apps installed or logged in during the attack we discovered last week. That investigation has so far found no evidence that the attackers accessed any apps using Facebook Login," Rosen says. This does not mean that the stolen access tokens that had already been revoked by Facebook do not pose any threat to thousands of third-party services using Face...

If you also found yourself logged out of Facebook on Friday, you are not alone. Facebook forced more than 90 million users to log out and back into their accounts in response to a massive data breach. On Friday afternoon, the social media giant disclosed that some unknown hackers managed to exploit three vulnerabilities in its website and steal data from 50 million users and that as a precaution, the company reset access tokens for nearly 90 million Facebook users. We covered a story yesterday based upon the information available at that time. Facebook Hack: 10 Important Updates You Need To Know About However, in a conference call [ Transcript 1 , Transcript 2 ] with reporters, Facebook vice president of product Guy Rosen shared a few more details of the terrible breach, which is believed to be the most significant security blunder in Facebook's history. Here's below we have briefed the new developments in the Facebook data breach incident that you need to know abo...

" Signup or Login with Facebook " ?? You might think twice before doing that next time. A security researcher has discovered a critical flaw that allows hackers take over Facebook accounts on websites that leverage ' Login with Facebook ' feature. The vulnerability doesn't grant hackers access to your actual Facebook password, but it does allow them to access your accounts using Facebook application developed by third-party websites such as Bit.ly , Mashable , Vimeo , About.me , Stumbleupon , Angel.co and possibly many more. FLAW EXPLOITS THREE CSRFs PROTECTION Egor Homakov , a researcher with pentesting company Sakurity, made the social network giant aware of the bug a year ago, but the company refused to fix the vulnerability because doing so would have ruined compatibility of Facebook with a vast number of websites over the Internet. The critical flaw abuses the lack of CSRF ( Cross-Site Request Forgery ) protection for three different proce...

If you invite guest users into your Entra ID tenant, you may be opening yourself up to a surprising risk.  A gap in access control in Microsoft Entra's subscription handling is allowing guest users to create and transfer subscriptions into the tenant they are invited into, while maintaining full ownership of them.  All the guest user needs are the permissions to create subscriptions in their home tenant, and an invitation as a guest user into an external tenant. Once inside, the guest user can create subscriptions in their home tenant, transfer them into the external tenant, and retain full ownership rights. This stealthy privilege escalation tactic allows a guest user to gain a privileged foothold in an environment where they should only have limited access. Many organizations treat guest accounts as low-risk based on their temporary, limited access, but this behavior, which works as designed, opens the door to known attack paths and lateral movement within the resource t...