Massive Twitter data breach was far worse than reported, reveal security researchers

An enormous Twitter knowledge breach final 12 months, exposing more than five million phone numbers and email addresses, was worse than initially reported. We’ve been proven proof that the identical security vulnerability was exploited by a number of unhealthy actors, and the hacked knowledge has been provided on the market on the darkish internet by a number of sources.

It had beforehand been thought that just one hacker gained entry to the info, and Twitter’s belated admission bolstered this impression …

Background

HackerOne first reported the vulnerability again in January, which allowed anybody to enter a cellphone quantity or e mail handle, after which discover the related twitterID. That is an inner identifier utilized by Twitter, however may be readily transformed to a Twitter deal with.

A nasty actor would be capable to put collectively a single database which mixed Twitter handles, e mail addresses, and cellphone numbers.

On the time, Twitter admitted that the vulnerability had existed, and subsequently been patched, however mentioned nothing about anybody exploiting it.

Restore Privacy subsequently reported {that a} hacker had certainly used the vulnerability to obtain personal data from millions of accounts.

A verified Twitter vulnerability from January has been exploited by a risk actor to realize account knowledge allegedly from 5.4 million customers. Whereas Twitter has since patched the vulnerability, the database allegedly acquired from this exploit is now being offered on a well-liked hacking discussion board, posted earlier immediately.

Twitter subsequently confirmed the hack.

In July 2022, we discovered by way of a press report that somebody had doubtlessly leveraged this and was providing to promote the knowledge that they had compiled. After reviewing a pattern of the obtainable knowledge on the market, we confirmed {that a} unhealthy actor had taken benefit of the problem earlier than it was addressed.

Huge Twitter knowledge breach plural, not singular

There have been ideas on Twitter yesterday that the identical personal data had been accessed by a number of unhealthy actors, not only one. 9to5Mac has now seen proof that that is certainly the case. We had been proven a dataset which contained the identical data in a unique format, with a safety researcher stating that it was “undoubtedly a unique risk actor.” The supply informed us that this was simply considered one of a variety of recordsdata they’ve seen.

The information contains Twitter customers within the UK, virtually each EU nation, and elements of the US.

I’ve obtained a number of recordsdata, one per cellphone quantity nation code, containing the cellphone quantity <-> Twitter account identify pairing for whole nation’s phone quantity area from +XX 0000 to +XX 9999.

Any twitter account which had the Discoverability | Telephone choice enabled in late 2021 was listed within the dataset.

The choice referred to here’s a setting which is fairly deeply hidden inside Twitter’s settings, and which seems to be on by default. Here’s a direct link.

Unhealthy actors are believed to have been in a position to obtain round 500k information per hour, and the info has been provided on the market by a number of sources on the darkish internet for round $5k.

Safety skilled who tweeted about it has account suspended

One other safety specialist who yesterday tweeted in regards to the subject had their Twitter account suspended the identical day. Internationally acknowledged laptop safety skilled Chad Loder predicted Twitter’s response, and was confirmed proper inside minutes.

They informed me that a number of hackers obtained the identical knowledge and mixed it with knowledge sourced from different breaches.

There seem to have been a number of risk actors, working independently, harvesting this knowledge all through 2021 for each cellphone numbers and emails.

The e-mail-twitter pairings had been derived by working current giant databases of 100M+ e mail addresses by way of this Twitter discoverability vulnerability.

We’d attain out to Twitter for remark, however Musk fired your complete media relations workforce, so …

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