"The software industry is high on the threat list and all companies in India are now realising this and they are taking their own measures to see how best they can provide security," he said.
The government was helping IT firms meet the security challenge, he added.
At the end of July, 101 federal troops began guarding the headquarters of IT leader Infosys in the southern city of Bangalore. The group agreed to pay around 25.
6 million rupees (550,000 dollars) a year, according to reports.
The cities of Bangalore and Hyderabad, another IT hub, have been targeted with bombings in the past.
At least two people were killed and seven injured last July when Bangalore was rocked by seven explosions.
And in 2007, 43 people were killed in twin attacks on an outdoor auditorium and an famous eatery in Hy