New password-stealing bug raises web security concerns

A vulnerability in online security software has raised questions about the security of nearly two-thirds of the world's websites, including some of the most popular sites for Irish users.

The Heartbleed bug was discovered last week, but has been active since at least March 2012. The personal data of millions of users may have been compromised and conventional responses, such as changing passwords, may not be enough.

Users who change their passwords on ...