This photo gallery takes you inside Oak Ridge National Laboratory in the US, home to some of the world's fastest supercomputers. It's also the site where the first plutonium was refined to create atomic bombs during World War II.
Twenty-six countries have united to form a global cyber-security group: the International Multilateral Partnership Against Cyber-Terrorism (Impact).
The US wants to help defend against cyber attacks by embarking on a project that would build the equivalent of an online nuclear bomb.
The US Defense Department is worried that sensitive information remains exposed on its Web sites.
US government and private-sector computer networks remain highly vulnerable to Internet-based attacks that will likely increase in the near future, experts said on Wednesday.
The idea that attacks on computer systems could provide an alternative method of spreading terror and disruption has been a concern for governments since IT systems began to proliferate.
At RSA 2008 in San Francisco, Secretary of the U.S. Department of Homeland Security Michael Chertoff discusses a new directive focusing on an early warning system to identify cyberattacks before they start.
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