Knowledge from 5.4M Twitter customers obtained from a number of menace actors and mixed with knowledge from different breachesSecurity Affairs | Tech Bea

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Twitter’s huge knowledge breach that uncovered buyer emails and cellphone numbers might have impacted greater than 5 million customers.

In late July, a menace actor leaked knowledge from 5.4 million Twitter accounts that was obtained by exploiting a now-patched vulnerability within the standard social media platform.

The menace actor supplied the stolen knowledge on the market on the favored hacker discussion board Breached Boards. In January, a report revealed in Hacker claimed the invention of a vulnerability that may be exploited by an attacker to discover a Twitter account by the related cellphone quantity/e-mail, even when the consumer has opted out of it within the privateness choices. .

“The vulnerability permits any get together with none authentication to acquire a twitter id(which is sort of the identical as getting the username of an account) from no consumer submitting a cellphone quantity/e-mail despite the fact that the consumer has Prohibited this motion within the privateness settings.. The bug exists because of the authorization course of used within the Android Twitter Shopper, particularly within the technique of verifying the duplication of a Twitter account. ” reads the outline within the report despatched by zhirinovskiy by means of the HackerOne bug bounty platform. “This can be a critical menace, as not solely can individuals discover customers who’ve restricted the flexibility to be discovered by e-mail/cellphone quantity, however any attacker with primary scripting/coding data can checklist a big a part of Twitter consumer base unavailable. to the earlier enumeration (create a database with cellphone/e-mail connections to username). Such databases will be offered to malicious events for promoting functions or with a purpose to establish celebrities in several malicious actions.”

The vendor claimed that the database contained knowledge (ie emails, cellphone numbers) of customers starting from celebrities to companies. The vendor additionally shared a knowledge pattern within the type of a csv file.

In August, Twitter confirmed that the info breach was brought on by the now-patched zero-day flaw submitted by the zhirinovskiy researchers by way of bug bounty platform HackerOne and that it acquired a $5,040 bounty.

“We wish to inform you a couple of vulnerability that allowed somebody to enter a cellphone quantity or e-mail deal with within the login move in an try and study if that info was linked to an current Twitter account, and in that case, which particular account. .” read the Twitter notice. “In January 2022, we acquired a report by means of our bug bounty program of a vulnerability that allowed somebody to establish the e-mail or cellphone quantity related to an account or, in the event that they knew the e-mail or cellphone variety of an individual, they may establish their Twitter account, if it existed”, continues the social networking agency.

“This bug was the results of an replace to our code in June 2021. Once we realized of this, we instantly investigated and glued it. At the moment, we had no proof to recommend that somebody had taken benefit of the vulnerability.”

This week, the web site claimed that the info breach was greater than what the corporate initially reported. The web site studies that a number of menace actors exploited the identical flaw and that the info out there within the cybercrime underground has totally different sources.

“An enormous Twitter knowledge breach final 12 months, which uncovered greater than 5 million cellphone numbers and e-mail addresses, was worse than initially reported. We’ve got been proven proof that the identical safety vulnerability was exploited by a number of unhealthy actors, and the hacked knowledge has been supplied on the market on the darkish net by varied sources.” learn the put up revealed by

Supply: Twitter account @sonoclaudio

9to5MacThe claims are based mostly on the supply of the info set that contained the identical info in a distinct format supplied by a distinct menace actor. The supply instructed the web site that the database was “simply one in all a number of recordsdata they’ve seen.” Evidently the affected accounts are solely those who have the “Visibility | phone option (which is tough to search out in Twitter settings)” enabled in late 2021.

The file seen by 9to5Mac contains knowledge pertaining to Twitter customers within the UK, nearly all EU nations and components of the US.

“I acquired a number of recordsdata, one by cellphone quantity nation code, which comprises the cellphone quantity <-> Twitter account identify matching for the countrywide cellphone quantity area of +XX 0000 to +XX 9999.” The supply instructed 9to5Mac. “Any Twitter account that had the discoverability | The cellphone choice enabled on the finish of 2021 was included within the dataset.”

Consultants speculate that a number of menace actors gained entry to Twitter’s database and mixed it with knowledge from different safety breaches.

The safety researcher behind the account. @chadloder (Twitter after the information broke) instructed 9to5Mac that “the e-mail and Twitter pairings have been derived by operating giant current databases of over 100 million e-mail addresses by means of this e-mail discovery vulnerability.” Twitter.”

The researcher instructed the web site that they’d contact Twitter for remark, however your complete media relations staff left the corporate.


Replace: after discussing with my colleague @sonoclaudio, we observed that the put up on the favored breach discussion board studies that 1.4 accounts have been suspended. Now the query is, why months after the accounts have been suspended, the info was nonetheless current within the database? What’s the retention interval for Twitter? Does Twitter violate the GDPR for European customers?

Comply with me on twitter: @safetyissues Y Fb Y Mastodon

Pierluigi Paganini

(Safety Points hacking, Twitter)

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Data from 5.4M Twitter users obtained from multiple threat actors and combined with data from other breachesSecurity Affairs