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New Twitter Exploit Allows Spammers To Add Themselves To Your Following List Without Your Permission

written by John Chow on September 13th, 2009

Every since the mass nuking of my Twitter following list, I’ve been playing a lot more attention to who I add. I had rebuilt my new list up to 113 users. However, when I went to check the list just now, I noticed that the list contain 115 users. Two users who I don’t know got added to my following list without me knowing or giving permission.

I would have never noticed this before when I had a policy of following everyone who followed me. But it seems spammers have found an exploit that allows them to add themselves to your following list without your permission. After they get on your following list, they would then send you @reply or DM spam. Unless you are following very few people, like I am now, you may not notice that your following list could have a bunch of spam accounts on it.

Hiding Behind Private Updates

Twitter Spam

The two spam accounts that got added to my list both have private updates enabled. This means you must be following them in order to see their tweets. The reason for putting the account on private is to make it harder for users to report them as spammers. If you can’t see the updates, then you don’t know if their tweets are spam or not. Judging by the last tweets from the two accounts above, I say they’re owned by the same spammer.

I would be interested to know if this has happened to you? Are there people on your following list that you never added yourself? Let’s hope Twitter find and close this exploit real quick. I’ve already deleted 10 accounts on my following list that I never added.

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  1. That’s crazy! It has never happened to any of my accounts.

  2. But the bottom one is dated as last tweeting June 20th..with a massive time difference like that you can’t really tie them both as being owned by the one person…

  3. My friend signs up for Twitter, and she is automatically following 12 people without she knowing at all.
    she is pissed. Left Twitter. Never came back. All my efforts of convincing her = dumped.

  4. Curious how the exploit works, not that I want to try it, but to see it get fixed!

  5. That’s happening to me too.
    I only noticed cause I started getting DM spam.
    Sure hope that Twitter fixes it soon..

  6. Yeah I’m starting to get really annoyed by that. Hopefully twitter will be able to fix it soon.

  7. Twitter is full of holes but this one seems to be the most serious of all.

  8. Very interesting, it should be fixed asap.

  9. Thanks for the heads up. I don’t think I read my Twitter anymore anyway.

  10. Another possibility is that it is done by one of the “twitter services” you use, check if they have something like this in the fine print, if not you should tell Twitter asap. SY

  11. I think Twitter has “gone to the dogs”! I can`t use it much any more.

  12. Twitter is always in some sort of security crisis. Just old news really…

  13. Well, I don’t often use Twitter actually. One of the reason is Chinese Great firewall banned it, and I am in China.
    Twitter is good, but I don’ t really use it, so I don’t very care of what is going on with Twitter.
    But I think that spammers are disgusting, I support to fight against them :) .

  14. finally i found people who have the same experience with me . but i got something more worst than you john. i got more than 20 unknown people in my twitter list already. and this increase every single day.
    what a damn s*it

  15. I have noticed this myself and one of the accounts you have listed looks familiar. When I notice these type of accounts I just delete them.

    Just another example of Twitter’s growing pains.

  16. No exploit John just that these people where suspended when you did your mass unfollow.

    Their accounts have been reinstated after so pop back on your follow list…

  17. If you know the username, how come you can not report to Twitter?

  18. Yup has happened to me. On one of my accounts, I follow one person. But when I checked it a week later, it was following 17 – all spammers

  19. I never notice that. But all the same twitter need to work on this before it start spreading like wildfire. May be I’ll do a re-check on my list and unfollow unnecessary people so as to monitor my account

  20. Thank you for the information. I haven’t noticed any problem at the moment, but I’ll be more careful from now on.

  21. John, Did you joined any Twitter Train kind of program in which if a new people follows you then you will automatically follow him/her with the help of API..??

  22. Hey John, Thanks for bringing this to our attention. I personally have not been subjected to this exploit but at least I now know what to look out for.
    Thanks again and thanks for the blog
    Simon

  23. Ditto for me. My follower list grows everyday without having to manually add anyone else. It does get bothersome because every day all day long my email box gets filled with new “So and So is following you on Twitter” messages. Then another email that they sent me a DM, which is usually a sales pitch. I’ve finally given in, and if they are spamming me too much or if it is pitching porn I manually delete them. I just ignore most of it and pay attention to the tweets that are useful.

  24. This may have happened to me as well. I’ve noticed that I am following more than who is following me. I’m not sure if people are unfollowing me or not, but I found it odd.

  25. I did notice that I was following an additional 11 accounts this morning which I was sure I did not add any of them. But didn’t really think too much about it at the time.

  26. I noticed this too, but didn’t think anything of it, until I saw this post. I delete all the people I follow, and yet it continues to grow each day… also, the accounts that you follow get marked as you follow them, so they are all growing too.

  27. I get people following me everyday and a lot of them are spammers. I think I am going to have to purge my followers list. This is one thing that Twitter is going to have to address at some point in time or things could turn ugly.

  28. I’m sure Twitter feels safe now that you are on patrol! LOL:)

  29. Dude how the hell did you follow them first?

  30. Ugh. Just reading the title of this blog post pissed me off because I thought, “Excellent. Another way that spammers are continuing to rule Twitter.” How do these account owners think that what they’re doing is a good use of time and energy, and that it’s making them any money? So absurd. I hope the issue gets fixed quickly, as it’s a real bizarre one.

  31. I bet no one notices this kind of thing. I could be following 100 of these kinds of accounts and would have no ideal.

  32. I have a very similar problem on an account it says I am following 16 people, but I am only following 2, and from the 2 I followed myself the other i Don’t know How I am following that account and for some odd reason I cant Unfollow it.

  33. the key point of twitter is simple.
    understand if they have low security

  34. Hi John,

    I think this is a mischief done by some intelligent spammers only on your account and we all know that twitter always has some small or big defects in its system.

    I have never seen this type of things on my twitter account.

    Better Luck John.

  35. Is it really possible? That’s very horrible! and I was never aware with this thing to happen.

  36. My My – I never notice this, These spammers are bigger then everything out there.

    -Shanker Bakshi

  37. That is crazy. Hopefully it doesn’t happen to me!

  38. This isn’t new. This has been happening to me fort he last few months.

  39. Spam is the scourge of the internet :-(

    I do think the new twitter terms & conditions will help, but one has to be pro-active in sifting through followers too. I can just imagine trying to deal with 1000′s of followers and weeding the spam followers out of there. Not fun!

  40. Sign up for a new twitter account and follow just 20 users. Wait a month and that number will change :)

    To be honest, the spammers come through other people you follow. If you unfollow EVERYONE, you won’t have any spammers following you.

    -Mike

  41. I think this is SPAM…. my twitter account is safe and i will surely going to make my tweets private so that i don’t get attacked by the spammers on twitter too. I must say these exploiters are really a pain in the …

  42. Exactly the same to me, i’ve gain 12 followers and following the same 12 et the same time ! Hard to manage… :-(

  43. So, they have found a way to get you follow them. As an internet marketer I know you would be very happy to know about the application they used to add you to their list.
    SPamming is some thing that has different meaning to different persons. You are right when you said Twitter must make its place a safer place.

  44. There was another one one week ago. In result of a browser game they add them self and send messages to all followers. This was really spammy. I think it was called mobsterworld or something

    best regards,
    Volksphone

  45. Thank you for this post, John. I have somehow been added to twitter accounts as a follower for a while now and I have no idea how it’s happening. Like you, I’m editing my following list, just can’t do it all at once (hoarding syndrome?) Getting caught up in having massive accounts can happen to all of us but it really doesn’t benefit anyone. I’m so thrilled with the #valueovervolume tweets I get!

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