An Internation cyber Security Conference has begun in London, 60 countries gathered to discuss about the Cyber Crime and Security.
Experts attending the conference included EU digital supremo Neelie Kroes, Cisco's vice-president Brad Boston and Joanna Shields, a senior executive at Facebook.
Mr Hague led the opening session.
"The biggest threat to the internet is not cybercriminals, but misguided or overreaching government policy," Mr Hague said.
Ross Anderson, professor of security engineering at Cambridge University, said there had been a "great growth" in cybercrime over the past six years.
"As many as 5% of PCs are infected with malware - short for malicious software - and there was a one in 20 risk that any given computer was sending spam without the owner's knowledge." Prof Anderson added.
UK Prime Minister David Cameron said, "We have to come together to tackle cyber crime... This costs the United Kingdom an estimated 27 billion pounds a year."
