[icq-devel] ICQ UIN Unregister backdoor

Markus Kern markus-kern at gmx.net
Sun Jun 8 11:15:41 CEST 2003

Maxim Y. Melnik <maxim at ultimate-company.com> wrote:

> Yo! =)

> ICQ messenger easter egg

> As you know, when you use icq messenger, you are identified by unique number called "uin".
> There is no official way to unregister uin at this time.

> But some uknown Icq admins made a "backdoor". If you put into your details
> email: unregister at vke.ru your uin will disappear from database and you won't be able
> to login to it anymore.

> It will work with any usernames in domain @vke.ru

> Found by member of iFud Security Group VKE (aka MLU)

You should give credit where it's due.
Although I don't know who discovered it first it has been public
knowledge for quite some time.

Besides unregister at vke.ru it also works with unsubscribe at vke.ru
and deleteuin at vke.ru.


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