Microsoft has deployed fixes for vulnerabilities in Internet Explorer 8 and Windows XP, uncovered by Dimension Data's security assurance team in Wellington.
Dimension Data general manager marketing Phil Goodwin says the vulnerabilities were significant and could have allowed remote parties to gain full control of a target PC.
He says that in the past organisations, including Google, have been victims of similar Internet Explorer security issues.
"Our security assurance team alerted Microsoft to the issue, which deployed a fix for the two vulnerabilities on February 12 as part of its monthly 'Patch Tuesday' release," Goodwin says.
"Dimension Data has no reason to believe that anyone has fallen victim to an attack, but similar security issues have been targeted in spear phishing attacks in the past. Microsoft is thorough in its response when vulnerabilities are brought to its attention. We are pleased to see that this issue has been addressed and we strongly recommend users apply the patch made available through the Windows Update website."
"Our security assurance team performs routine penetration testing and provides advisory services to ensure the security of IT systems for our clients. It's through their regular work that we can ensure security issues like this can be fixed quickly, with minimal disruption for businesses."