SecurityWeek interviews Geoff Belknap, CISO at LinkedIn, and Guy Rosen, CISO at Facebook parent company Meta.
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Meta Patches Facebook Account Takeover Vulnerability
Meta has patched a critical vulnerability that could have been exploited to take over any Facebook account via a brute-force attack.
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US Aid Office in Colombia Reports Its Facebook Page Was Hacked
The Colombia office of the U.S. government agency that oversees foreign aid and development funding said its Facebook page was hacked and asked the public to ignore any posts or links from the account.
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Meta Makes End-to-End Encryption a Default on Facebook Messenger
End-to-End encryption in Facebook Messenger means that no one other than the sender and the recipient — not even Meta — can decipher people’s messages.
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Meta Takes Action Against Multiple Foreign Influence Campaigns
Meta removed three foreign influence operations from the Facebook platform during Q3, 2023. Two were Chinese in origin, and one was Russian, the company says.
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UK Minister Warns Meta Over End-to-End Encryption
Britain’s interior minister warned Meta that out end-to-end encryption on its platforms must “not to come at a cost to our children’s safety”.
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Facebook Parent Meta Hit With Record Fine for Transferring European User Data to US
The European Union slapped Meta with a record $1.3 billion privacy fine and ordered it to stop transferring user data across the Atlantic.
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Delaware Judge Refuses to Dismiss Facebook Shareholder Suit Over User Data Privacy Breaches
Judge refuses to dismiss shareholder lawsuit alleging that Facebook violated the law and fiduciary duties in failing for years to protect user data privacy.
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Facebook ‘Unlawfully’ Used Dutch Personal Data: Court
Social media platform Facebook unlawfully processed Dutch users’ personal details without consent for advertising purposes for almost a decade, Amsterdam-based judges ruled on Wednesday.
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Meta Awards $27,000 Bounty for 2FA Bypass Vulnerability
A researcher has disclosed the details of a two-factor authentication (2FA) vulnerability that earned him a $27,000 bug bounty from Facebook parent company Meta.
Gtm Manoz of Nepal discovered in September 2022 that a system designed by Meta for confirming a phone number and email address did not have any rate-limiting protection.
A fix was rolled out by Meta in October 2022 and the company highlighted Manoz’s findings in its annual bug bounty program report. The tech giant has paid out more than $16 million through its program since 2011, with $2 million awarded in 2022.
In a blog post published earlier this month, Manoz said he discovered the vulnerability while analyzing a new Meta Accounts Center page in Instagram. Here, users can add an email address and phone number to their Instagram account and the Facebook account linked to their Instagram. In order to verify the email address and phone number, users have to enter a six-digit code received via email or SMS.
The researcher’s analysis revealed that the system verifying the six-digit code did not have rate-limiting in place, which could have allowed an attacker to enter every possible code until they got the right one.
Specifically, a hacker would have needed to know the phone number assigned by the targeted user to their Instagram and Facebook account. By exploiting the vulnerability, the attacker could have obtained the six-digit verification code through a brute-force attack and assigned the victim’s phone number to an account they controlled.
This resulted in the phone number being removed from the victim’s Facebook and Instagram account and 2FA getting disabled due to security reasons — if a phone number is verified by another user, that user would be getting the SMS containing the 2FA code, and Meta is trying to prevent that.
Manoz showed that Facebook users did receive a notification when their phone number was removed due to being verified by a different person.
Based on the maximum potential impact of the vulnerability, Meta decided to pay out $27,200 for the researcher’s findings.
Related: Facebook Patches Vulnerability Exposing Page Admin Identity
Related: Twitter Finds No Evidence of Vulnerability Exploitation in Recent Data Leaks
Related: Facebook Pays Out $40,000 for Account Takeover Exploit Chain
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