Sophos anti-virus has confirmed that it is in the preliminary stages of analysing a new Trojan that may be linked to an organised attack on Verisign's domain name servers.
Earlier this year, presidential campaign computers in the camps of both Barack Obama and John McCain came under cyberattack from unknown hackers, it was reported this week.
Microsoft is looking into a vulnerability that could affect Word, the company said on Monday.
Late last week, leaders of a group of Chinese hackers called off a planned denial of service attack on CNN.com, after it was reported on the same day that the attack would occur over the weekend, in protest at "anti-Chinese" media across the Western world.
CNN.com was knocked offline for three hours shortly after Chinese hackers claimed to have called off a planned denial of service attack against the US publisher.
The popular social-networking site Facebook is coming under increased attack by spammers and phishers, the company's security chief has revealed.
The knock down of up to 600,000 websites of MyDomain.com and NamesDirect.com customers this week was caused by a massive Denial of Service (DoS) attack.
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 special US cyber attack unit US Air Force Cyber Command will use network warfare such as denial of service and confidential data loss as stage one of a physical attack to soften an enemy's defences, according to a senior US general.
Chinese computer hackers have once again been accused of launching attacks on classified Australian government computer networks.
Denial-of-service attacks are growing faster than bandwidth is being added to the Internet, according to VeriSign, the company that administers the .com domain.
Experts at security company McAfee have predicted that virtualisation will be a major area of concern for security threats next year.
The owners of the Storm botnet, whose identities are as yet unknown, could be preparing to sell off the "services" of segments of the network, according to Joe Stewart, a researcher from managed security services company SecureWorks.
The CIA has said that a cyberattack caused a power blackout in multiple cities in a country outside the US. Security training body the Sans Institute reported the CIA's disclosure on Friday.
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