May 20, 2024

On April 9, Twitter/X started routinely modifying hyperlinks that point out “” to learn “” as an alternative. However over the previous 48 hours, dozens of recent domains have been registered that show how this alteration might be used to craft convincing phishing hyperlinks — similar to fedetwitter[.]com, which till very not too long ago rendered as in tweets.

The message displayed when one visits, which Twitter/X displayed as in tweets and messages.

A search at reveals no less than 60 domains have been registered over the previous two days for domains ending in “,” though analysis thus far reveals nearly all of these domains have been registered “defensively” by non-public people to stop the domains from being bought by scammers.

These embody, which Twitter/X truncated to when the area appeared in person messages or tweets. Visiting this area at present shows a message that begins, “Are you severe, X Corp?”

Replace: It seems Twitter/X has corrected its mistake, and now not truncates any area ending in “” to “”

Unique story:

The identical message is on different newly registered domains, together with (, (, (, ( and ( The message left on these domains signifies they had been defensively registered by a user on Mastodon whose bio says they’re a techniques admin/engineer. That profile has not responded to requests for remark.

Quite a lot of these new domains together with “” look like registered defensively by Twitter/X customers in Japan. The area (, to Twitter/X customers) now shows a message saying it was “acquired to stop its use for malicious functions,” together with a Twitter/X username.

The area talked about at the start of this story — — redirects customers to the weblog of a Japanese know-how fanatic. A person with the deal with “amplest0e” seems to have registered, which Twitter/X customers would see because the CEO’s “” The area “” already redirects to the true

Among the domains registered not too long ago and ending in “” at present don’t resolve and include no helpful contact info of their registration data. These embody firefotwitter[.]com (, ngintwitter[.]com (, and webetwitter[.]com (

The area, which Twitter/X till very not too long ago rendered as “,” redirects to this weblog publish warning concerning the current adjustments and their potential use for phishing.

Sean McNee, vice chairman of analysis and knowledge at DomainTools, instructed KrebsOnSecurity it seems Twitter/X didn’t correctly restrict its redirection efforts.

“Dangerous actors may register domains as a technique to divert site visitors from respectable websites or manufacturers given the chance — many such manufacturers within the prime million domains finish in x, similar to webex, hbomax, xerox, xbox, and extra,” McNee stated. “It is usually notable that a number of different globally in style manufacturers, similar to Rolex and Linux, had been additionally on the listing of registered domains.”

The obvious oversight by Twitter/X was trigger for amusement and amazement from many former customers who’ve migrated to different social media platforms for the reason that new CEO took over. Matthew Garrett, a lecturer at U.C. Berkeley’s College of Info, summed up the Schadenfreude thusly:

“Twitter simply doing a ‘redirect hyperlinks in tweets that go to to as an alternative however by chance accomplish that for all domains that finish like eg going to’ isn’t completely the funniest factor I may think about however it’s excessive up there.”