Russia and Ukraine sit down for high-stakes talks in Geneva on Thursday, seeking to ease the crisis in the former Soviet republic after the US warned Moscow it must make concessions or face fresh sanctions.

Web browsers may be overloaded by the overhaul of security certificates, leading to error messages and impacting Web performance.

British parenting website Mumsnet is the latest organization to have been hacked due to the "Heartbleed" bug, founder Justine Roberts revealed.

Germany's aeronautics and space research center has for months been the target of a suspected cyber attack by a foreign intelligence service, according to reports.

An appeals court in the United States overturned the conviction of a self-described "security research" hacker for breaking into the AT&T online network to reveal a security flaw.

Officials at the Justice Department and FTC said they issued formal guidance telling companies that there would be no antitrust issues from the sharing of technical information about cyber attacks, malware or similar threats.

The chairman of a new German parliamentary panel probing mass surveillance by the NSA abruptly quit on April 9, rejecting opposition demands that the body question fugitive US intelligence leaker Edward Snowden.

The European Court of Justice struck down an EU-wide law on how private data can be collected and stored, judging it too invasive -- despite its usefulness in combating organized crime and terrorism.

A young startup specializing in Android smartphone lock screens that anticipate what "app" a user might want at any give moment said Monday it has been bought by Twitter.

A plan unveiled last month would see the US relinquish its key oversight role for the Internet, handing that over to "the global multi-stakeholder community."

Turkey's government faced growing pressure Thursday to quickly implement a top court order to unblock Twitter, which it had banned after corruption claims went viral on the social media site.