they can social engineer your less IT literate mom to bank in free money for them

"hello hello... this is hospital. are you XXX? your son YYY with IC number IIIIIII was in an accident. we need a sum of ZZZ as a guarantee before we can start operate and save his life. yes, the money can be returned after the real cost is paid later. Please bank into this account NNNNNNN immediately so that we can start the treatment as soon as possible."

This post has been edited by tictac88: Oct 19 2017, 08:06 PM

also possible if the said banks have stupid help desk with low class security policy and allow any caller to simply change some details in your bank account after verify your name, IC and address.