Traditionally firewalls were the bastion of large, publicly accessible networks to keep hackers out. But in a world connected by the Internet, every machine hooked up to it becomes publicly accessible, and so it's vital that every machine is equipped to protect itself, and the network it may serve, from attack.

Qatari news broadcaster Al-Jazeera -- sometimes called the Arab CNN -- has again been hit by hackers, with its computer network compromised by trojans causing Denial of Service (DoS) attacks on its global customer base, including in Australia.

Two new vulnerabilities in Internet Explorer 6.0 were unveiled by a security firm this week that hackers could exploit to bypass security features even in Microsoft's most secure OS, Windows XP SP2.

Will a beefed-up firewall, User Account Control and disk encryption make Vista a safer choice than XP?

P2P site complains to police about 'illegal' tactics.

Better than encryption, say inventors.

Do you have a business or are in charge of a business’ tech security? Get some tips from PC Authority’s experts.

Forgetting the hype for a moment, the Internet *is* a dangerous place. In the Internet age complacency is one of the greatest dangers facing business. While many companies assume that viruses an

The perceived security of optical networking systems has been thrown into doubt by a new report from analyst firm IDC..

'Get your PC infected here' gets 400 hits.

Sophos security expert points out Bill's folly.

Misconfigured web server leaves site red-faced.

All fun and games until someone loses a bank account.

Got a PC riddled with more viruses than a bus driver’s armpit? The PC Authority Labs team has tested 10 leading anti-virus packages to see which ones really deliver the goods and keep your PC clean.

It's always a bonus to uncover a shortcut or program enhancement, and here we bring you 100 tips and tricks that we hope will make your computing experience quicker, simpler or more rewarding. Security tips.

Its widely known that the Internet itself does not provide a secure environment to trade goods upon. This is because the TCP/IP protocol that defines communication among different computers is subject

More tools and good support options are just some of the highlights of this server package.

How damaging is today's spyware? Edward Mandla watches the watchers.

It is easy in the heat of debate to forget that filtering is about protection, and filter software does not just attempt to block access to Web sites that most people would consider unsuitable for you

It is easy in the heat of debate to forget that filtering is about protection, and filter software does not just attempt to block access to Web sites that most people would consider unsuitable for you