A member in-charge of cyber security of a prestigious national security body was in for a rude shock when he found he was defrauded of Rs. 19 lakh electronically from his ICICI bank account, in an apparent hacker attack. The police said the hackers even blocked the SIM card of 65-year-old Sanjay Govind Dhande of the National Security Advisory Board, so that he does not receive transaction alerts from the bank.