India has said that Pakistan's attitude towards tackling terrorism has "altered", terming it a " concrete" development. "I think the prism through which they see this issue has definitely been altered," Indian Foreign Secretary Nirupama Rao told CNN-IBN TV channel on Sunday when asked whether New Delhi saw a change in Pakistan's attitude towards terrorism during the recent top diplomat-level talks. She added: "I think when they speak of the fact that non-state elements in this relationship need to be tackled, that we must look at safe havens and sanctuaries, that we must look at fake currency, we must look at all the aspects that are concerned with the business of terror. I think that is a concrete development." India and Pakistan recently resumed their composite dialogue which was stalled by New Delhi following the Mumbai terror attacks in November 2008 when 10 Pakistani militants carried out a mayhem on the country's financial capital, in which over 170 people were killed. India insists that Pakistan should bring the perpetrators of the Mumbai massacre to justice.