Naya Nagar police have arrested three men for allegedly hacking into the database and formatting the crucial details of 3.5 lakh customers of a software firm, which gives a solution to mobile retailers facing difficulties with payment collection from the customers who purchased handset on loan. 

The owner of the software firm had approached the police after incurring a huge loss of Rs. 1.5 crore in the business, said the zonal deputy commissioner of police (DCP) Prakash Gaikwad.