Previously, extensions could be installed by any website without user intervention, an obvious boon for malicious attacks.
Researchers warn users of a global botnet spamming smartphones, probably originating from a rogue app.
A Home Office official has warned once again that with the Olympic Games only weeks away the country faces an unprecedented threat from cyber-attacks.
A type of Trojan tool automates money theft from compromised accounts in ways that are invisible to account holders, Trend Micro has discovered.
LinkedIn has brought the encryption applied to all user passwords up to a more secure standard after last week's hugely embarrassing password hack, the company has announced.
Security companies have reported that the number of Last FM passwords stolen could be as high as 2.5 million.
The debut of the IPv6 protocol on the Internet was a boost to morale for those who've worked on it, but the traffic levels remain tiny a few days on.
The Hotmail and Dropbox accounts of US Presidential candidate Mitt Romney appear to have been hacked.
The Flame malware was apparently infecting computers for as long as four years, but was detectable by antivirus software, an analysis suggests.
An astonishing 20KB in size, Tinba retains enough sophistication to match almost anything that can be done by much larger malware types.
Infected searchers will get an alert that they need to remove the DNSChanger malware or risk losing Internet connectivity on July 9.
More than half of US businesses still rely on conventional firewalls or intrusion prevention systems to shield themselves from the scourge of DDoS attacks, a survey by services firm Neustar has found.
The malware uses the "drive-by" approach from an ordinary website, a dangerous type of automatic attack more common to Windows Trojans.
McAfee antivirus founder John McAfee is reportedly taking legal advice after a raid on his Belize home by police resulted in the software entrepreneur's arrest.