The woman, who teaches in a college in Mulund, was approached by some unidentified people who promised to get her a part-time job for which she paid Rs 3.18 lakh to them since January 9 and Rs 10 lakh on Thursday, an official said.

"However, the woman realised she was being cheated and immediately called the 1930 cyber helpline. Acting within what we call the golden hour, we contacted the nodal officer of the bank and managed to save Rs 7.52 lakh before the entire amount could be withdrawn by the fraudsters," he said.