At least five of those arrested so far in connection with the serial blasts across the country are software professionals. But it does not surprise those in Bangalore -- India's Silicon Valley, nor do they think it gives techies a bad name. "This has been happening in the world of crime. People have been using software for hacking into the banking sector for swindling money. This is the strongest tool I can say," said Shivakumar Revanasiddappa, an IT professional.