A variation of these attacks is to masquerade as bank officials and extract information from customers, based on random calls to phone numbers obtained from various sources, or even by blind trials which result in at least a few attempts resulting in success. 6.
There are other cyber criminals who steal money by putting through fraudulent transactions, or changing the particulars, so that they are able to take large sums away and vanish. In such cases, customer may not be directly contacted, but his particulars are taken through malware or other means. Recent incidents of this type have set the alarm bells ringing.