09 / 90 fraud

[luggagewarrior]

Had a mail from the boss saying the following;

If you receive a phone call on your mobile from any person, saying that, he or she is a company engineer, or telling that they ' rechecking your mobile line, and you have to press # 90 or #09 or any other number.


End this call immediately without pressing any numbers.



There is a fraud company using a device that once you press 90 or #09 they can access your "SIM " card and make calls at your expense. Forward this message to as many friends as you can, to stop it.

Is it genuine or just a hoax that does the rounds on the back of fear?
I read that something similar originated from pressing 9 for outside lines in company exchanges.
Any clues.

[WTD]

It's pish mate, nothing but lies, damned lies

[REPAIRMAN]

This comes from the old way phone phreakers obtained free calls from a land line by ringing a company with an 0800 freephone number & a big telephone system (not a mobile) & asking someone to press certain keys which put the phreaker on hold & then he could press 9 while on hold & get an outside line with free calls.

Regards
REPAIRMAN