Visitors to whitepages.com.au, owned by Sensis and Australian operator Telstra, are victims of MalwareAlarm flash advertisements hijackings according to security expert and blogger Sandi Hardmeier who uncovered the problem.

The website - and pottentialy other high volumt websites services such as the Australian Yellow Pages - is showing advertisement that automatically redirect visitors to a third party malicious website that tries to plant malware on users' computers.

Sandi had tried to contact Telstra and Sensis but at the time this article is posted we can confirm the malicious redirection is still affecting users.

It seems well known spammers involved with companies mysurvey4you, blessedads.com and prevedmarketing.com are involved.

Sandi writes "The fact that the redirect is happening at www.whitepages.com.au means that in all likelihood www.yellowpages.com.au and www.whereis.com.au (and any other Sensis site, for that matter) are a risk."

When the advert causing the redirection (screenshot pictured) is loaded the victim's computer is automatically hijacked, taking a route through various sites that are well known to those who have been dealing with malicious banner advertisements for a while.