"Cyber crime is the biggest challenge these days with development and access to technology across the globe. Cyber space is increasingly being used to radicalise young minds," he said addressing a security meet organised by ASSOCHAM here.
Singh expressed deep concern over the exponential growth in the figures of cyber crime. Earlier, the crime used to originate from land, water and air but now it emanates from cyber space too.
"In the 20th century, the dimension of space was added to it. But now a days, cyber crime is showing exponential growth in its number, which is a matter of serious concern," he said.
Singh said an expert group has been constituted in the Home Ministry to prepare a roadmap for effectively tackling cyber crimes in the country.
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It has recommended setting up of an Indian Cyber Crime Coordination Centre (I4C) to fight cyber crimes, he said.
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US Ambassador to India Richard Verma said India and the US have forged a strong partnership in the last few years and credit goes to Prime Minister Narendra Modi and President Barack Obama "for deepening, broadening and strengthening security partnership".
Appreciating India's leadership in cyber domain, Verma said there is a need to do more in cyber world where both the countries stand now.
"We have a cyber security dialogue. Cyber defence, cyber security are key priority areas," he said.
The Ambassador said that in the spheres of homeland security, the US was working closely with Indian agencies.
"Not only we have homeland dialogue, our training has been incredible, we have tactical partnership and we need to share the best technology, best practices," he said.