http://news.bbc.co.uk/2/hi/technology/3741871.stm
Apple users have been updating their software to close a security hole which
could, in theory, expose their computers to attack.
On Friday, Apple warned of a flaw in its Safari web browser which could allow
malicious code to be run on a machine without a user's permission.
But security firm Secunia said there were still what it called "critical"
holes in the OS X operating system.