LATEST UPDATE: There appears to be a new phishing scam on Facebook, please check out this post too.

Update, 7:21PM: Barely a couple of hours after I posted this, I already have gotten 4 16 54 a lot of Google searches about it. Also, the number of my infected Facebook friends has doubled. Please also digg this if you feel this information is useful so that it can reach a wider audience.



Warning: There’s a new spyware/malware/worm/malicious application called “Error Check System” (sometimes mispelled as “Error System Check” on Facebook. I came across an unusual notification recently while browsing Facebook (see picture on the right).

What errors could there possibily be in my profile? Perhaps my profile picture was too handsome? I quickly decided it could not be the case, because if it were, the error should have happened much earlier from the time I uploaded my first picture. Kidding.
But seriously. First off, the grammar was wrong. The word ‘Messages’ should have been pluralized, instead of ‘Errors’.

And also, what possible errors could there be with a profile?

And really…wouldn’t Facebook notify you of errors somewhere else besides the Notifications pane?

So I did some looking around to see if it was legit. Take note of the captions in red btw.

So anyway, I clicked ahead, and I saw this:



Curious, I checked out the application page. My guess was right, it definitely was not a legit/official Facebook application (captions added in red). The ‘Facebook Error Check System’ is not made by Facebook.



You’ll notice that the rogue app acts pretty fast. The same Facebook friends of mine who inadvertedly added the app  are the same ones who appeared in the Notifications panel earlier.

I did a Google search to confirm my findings, and found that it was probably a very new malware application – there only seemed to be 6 results in total for “error check system” facebook app. One of the pages however, was useful and led me to this page on Yahoo Answers.



So whatever you do, do not add this application to your Facebook Apps!



Whatever you do, don’t add it. If you already have it, do remove it from your Facebook Applications list. While the effects are yet to be known, you definitely do not want a spyware app to have your profile information, photos, friends information, and other content.

Update 22 Feb 2009: Removal Instructions
1. You can see if the application has accidentally been installed by checking out the Facebook Edit Apps Page (make sure you’re logged in when you click that)
2. If it has, just get rid of it by clicking the ‘x’ on the right hand side of the application name.
3. Facebook will prompt a confirmation message. Then, click ‘Remove’
4. You’re done! It’s gone!

Update: 22 Feb, 4:10AM: There seems to be another site showing up quite high in the related google searches for this spyware app. And that site is a spyware site itself! and it will pretend to scan your computer – it will prompt you to install a malicious executable file (.exe program). It looks convincing, but it is not legit. DO NOT visit , it is a SCAM!

Be safe, and happy poking! This message is brought to you by

Note: This post is by far, the most popular one on this blog. Why not check out the rest of my blog? There’s  posts about relationships, working life, and lots of clubbing photos with beautiful blogger chicks.

Reader's Comments

  1. Rachel | February 23rd, 2009 at 7:08 am

    i knew this was dodgy!


  2. Facebook » Blog Archive » Beware Spyware Facebook Application Called “Error Check System” at … | February 23rd, 2009 at 8:38 am

    [...] Josh Lim wrote an interesting post today on Beware Spyware Facebook Application Called â

  3. The_YongGrand | February 23rd, 2009 at 9:03 am

    Damn, I was so damn stupid to click on that stupid piece of spyware and sent to a few persons!!

    But in the Applications List in Facebook, I can’t see the program at all!

    How am I going to remove it? Thanks for the help. :)


  4. jason | February 23rd, 2009 at 1:35 pm

    thanks for the advice!


  5. aileng miao | February 24th, 2009 at 1:12 am

    Thnx josh for sharing. also thnx to streamyx terrible loading speed in the past few days so I didnt get to install the application successfulli :p


  6. Attenzione all’applicazione per Facebook “Error Check System” | Leonardo Musumeci | February 24th, 2009 at 4:27 am

    [...] informazioni sull’applicazione “Error Check System” di Facebook , leggete il blog di Josh Lim, inoltre sono nati molti  gruppi sul sito di social networking per avvertire della [...]

  7. shamil | February 24th, 2009 at 8:41 am

    thnx for da mail


  8. Facebook Hit With Malicious App, Searchers Duped | SEO Backlinking - SEO and Online Reputation Management Blog | February 24th, 2009 at 6:49 pm

    [...] actual text of the message reads: “[Name] has faced some errors when checking your profile View The Errors [...]

  9. osanda | February 24th, 2009 at 8:16 pm

    i activated that application…………….. what will happen?


  10. Steve | February 25th, 2009 at 5:27 am

    I accidentally added it, but was talking to someone else on facebook using chat…. when they mentioned me seeing errors on their prof (which I hadn’t visited) I immediately changed my pass and deleted it.


  11. dedes | February 28th, 2009 at 11:22 pm

    Here is another one starting up on FACEBOOK – today I received this notification from a friend.
    (name of person) just reported your profile as it is in violation of Terms and Conditions! Click for Details
    Of course do not add…. DO NOT CLICK ON THIS SPYWARE


  12. Keith | March 1st, 2009 at 2:14 am

    There’s a new variant of this, same spyware MO.

    It’s called “Click for Details”.

    The spam message looks like this:

    “[your friend] just reported your profile as it is in violation of Terms and Conditions! Click for Details”


  13. ‘Blogger Josh Lim’ gets quoted in the Straits Times Singapore! » Josh Lim’s Adventures | March 2nd, 2009 at 7:04 pm

    [...] Totally didn’t expect it, but guess what – I got quoted in the Straits Times Singapore! This was due to my blog post on the Facebook ‘Error Check System’ malware. [...]

  14. Worm su facebook “Error Check System” | WEB 2 SP | March 3rd, 2009 at 8:16 pm

    [...] Gli autori di questo worm, per aumentare la percentuale di gente da infettare hanno creato anche moltissime false pagine web con parole chiavi quali “Error Check System”, quindi facendo una ricerca su google questi falsi siti appaiono ai primi posti e a loro volta rediriggono il malcapitato su siti infetti che fanno la promozione di rogue software Ecco a cosa assomiglia la gigantesca trappola che viene tesa ai malcapitati; [...]

  15. Darren Meacher | March 8th, 2009 at 10:33 pm

    Thanks for the info, i’ve now put this on my Facebook profile warning everyone of the evil hoax…


  16. New Facebook Scams:,,, etc » Josh Lim’s Adventures | May 25th, 2009 at 3:30 am

    [...] back, you may remember that I blogged about the Facebook ‘Error Check System’ malware. There are now new ones that have cropped up, and most disturbingly, they seem to be able to send [...]

  17. Hate Being Hacked? Halt Hackers by attending Hacker Halted 2009! » Josh Lim’s Adventures | August 20th, 2009 at 2:28 am

    [...] occasionally blog about security, and in fact, was the first worldwide to break the news about the Facebook “Error Check System” rogue application. That post alone got over 12,000 visits, got me interviewed in the Singapore [...]

  18. Eneva | April 4th, 2010 at 12:01 am



  19. facebook tip | April 9th, 2011 at 3:11 pm

    Thank You Josh for sharing this information and giving us advice. I also encountered with same problem.


  20. Facebook Hit With Malicious App | SecurityProNews | November 21st, 2012 at 6:57 am

    [...] actual text of the message reads: “[Name] has faced some errors when checking your profile View The Errors [...]

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