Automatic text replacement let users spoof URLs ending in x, like netflix.com.

Automatic text replacement let users spoof URLs ending in x, like netflix.com.

Elon Musk’s clumsy brand shift from Twitter to X caused a potentially big problem this week when the social network started automatically changing “twitter.com” to “x.com” in links. The automatic text replacement reportedly applied to any URL ending in “twitter.com” even if it wasn’t actually a twitter.com link.

The change apparently went live on X’s app for iOS, but not on the web version. It seems to have been a problem for a day or two before the company fixed the automatic text replacement so that it wouldn’t affect non-Twitter.com domains.

Security reporter Brian Krebs called the move “a gift to phishers” in an article yesterday. It was a phishing risk because scammers could register a domain name like “netflitwitter.com,” which would appear as “netflix.com” in posts on X, but clicking the link would take a user to netflitwitter.com.

“A search at DomainTools.com shows at least 60 domain names have been registered over the past two days for domains ending in ‘twitter.com,’ although research so far shows the majority of these domains have been registered ‘defensively’ by private individuals to prevent the domains from being purchased by scammers,” Krebs wrote.

  • @zeppoEnglish
    89•7 months ago

    It’s amazing that not only did they fuck up the regex, but only changed how the link was displayed and not where it linked to. And somehow their org is fucked up enough that someone not only wrote this incompetent code but it went into production.

    • RobEnglish
      129•7 months ago

      It’s amazing that not only did they fuck up the regex regetwitter, .

      FTFY

    • Odin
      44•7 months ago

      Any talent Twitter once had jumped ship a long time ago

      • Flying Squid
        35•7 months ago

        I’m sure plenty of H1B visa talent is still there, terrified to do anything that Musk doesn’t explicitly order them to do, thus resulting in the same sort of fuckups that would result if they weren’t there. So I guess at least Twitter is stopping foreign people from having to go back to an impoverished life in Goa or wherever.

        • @zeppoEnglish
          21•7 months ago

          Marginalized non-white people working for him while afraid of the consequences of quitting or disagreeing must take him back to his childhood.

    • @WindyRebel
      13•7 months ago

      Wait, they just did a text replacement and didn’t change the anchor links? I tried x dot com and it redirects to twitter, so even if they changed the links, too, it would just send them back to twitter.

      (laughs in SEO) You fools!

      If they really wanted X to happen they’d do a full site migration using 301, or 308, redirects of twitter to x.

      Do they just not have the resources to do this or what the hell is stopping them from doing it the correct way if that’s what they want? Doesn’t Musk own the x domain?

      • @WhatAmLemmy
        14•7 months ago

        It was evident a year ago that Musk fired or drove away all their skilled, competent engineers.

        They can’t do it the right way because a) they don’t know how b) nobody understands most of their existing services, and c) Musk is guaranteed to step in and fuck everything up.

      • @[email protected]English
        7•7 months ago

        My understanding is, Musk fired all the developers who actually understood how Twitter works, and now they don’t know how to manage that migration without breaking the site.

      • @[email protected]
        3•7 months ago

        armchair developer here, but it wouldn’t be that hard, right? Isn’t it just a single line at the very root of the domain in .htaccess - or whatever equivalent if there’s a different stack

        • @WindyRebel
          2•7 months ago

          I’ve never done the actual implementation myself, honestly. Redirects can be done via .htaccess (or equivalent), server side, or JavaScript.

          Theoretically, yes, it’s that easy. However, pages should have 1:1 redirects for each page URL that matters. Then a strategy to prune the ones no longer needed/outdated by allowing them to 404, redirect to the most relevant subfolder, or just send to the main domain should be considered.

          The list can be quite long. There’s more to it than all this as well, but that’s the general gist.

          • @[email protected]
            3•7 months ago

            yeah I assumed everything stayed the same except domain - and if best practices are maintained then everything should have relative urls anyway…

      • @zeppoEnglish
        3•7 months ago

        Just optics, I guess? Probably some urgent drug-induced decree from Elron. They still have tons of references to Twitter in various parts of the site. The transition to the ‘x’ domain (which yes, Musk has owned since 1999) was rushed, hasty, and poorly done, not to mention incredibly stupid from a business perspective.

    • Flying Squid
      3•7 months ago

      Is it amazing? I think it’s virtually expected.

    • @[email protected]
      -9•7 months ago

      You have it exactly backwards. They only changed where the links went, not how they were displayed. That’s why it’s such a phishing concern.

          • @zeppoEnglish
            14•7 months ago

            Are you serious?

            As of April 8, 2024, the iOS Twitter (now X) client automatically replaces the text “twitter.com” in posts with “x.com” as part of its functionality. Therefore, for example, a URL that appears to be “netflix.com” will actually redirect to “netflitwitter.com” when clicked.

            As another X user (@Arcticstar0) pointed out, “the actual link is unchanged. It’s just the text placeholder that appears different. So the link goes to a different url than it appears.”

            It could work the way you’re describing with the same effect, but that’s not what’s being described.

            • @[email protected]
              3•7 months ago

              Quoting your quote, now with emphasis:

              a URL that appears to be “netflix.com” will actually redirect to “netflitwitter.com” when clicked

              So, as I said, the link text you see appears unchanged, but where it goes is changed. That’s why it’s a phishing concern.

                • @[email protected]
                  -1•7 months ago

                  No. If the link was left pristine, phishing would be impossible, because the original links we’re discussing went to genuine sites and the displayed link would be obviously garbage.

                  The whole problem is that people are linking to netflitwitter with a display of netflitwitter, then the regex changes the link target, so you see the original, sane address, click on it, and get deceived into going to a target the regex fabricated.

                  • @zeppoEnglish
                    3•7 months ago

                    That COULD be what happened, and it would have a similar effect, but it wasn’t what happened. If you read information about this that becomes apparent. They didn’t change the link target, they changed the link text only.

                    Someone registers spacetwitter.com and sets up an adversarial site. They then make an “X” post mentioning spacetwitter.com. The app creates a link to spacetwitter.com but changes the text to say spacex.com.

                    Please read this: https://krebsonsecurity.com/2024/04/twitters-clumsy-pivot-to-x-com-is-a-gift-to-phishers/

                    On April 9, Twitter/X began automatically modifying links that mention “twitter.com” to read “x.com” instead. But over the past 48 hours, dozens of new domain names have been registered that demonstrate how this change could be used to craft convincing phishing links — such as fedetwitter[.]com, which until very recently rendered as fedex.com in tweets.

                    Notice how it says modifying links that mention “twitter.com” to read “x.com” instead.