Autumn doesn't merely bring mist and mellow fruitfulness – it just as surely comes accompanied by a rash of antivirus software releases. Trend Micro's Internet Security Pro is the latest suite to hit the market, and this release, which drops the 'PC-Cillin' tag, brings with it an exhaustive feature list.

Single-pass scan for viruses, suspicious software, Windows security flaws and other threats, strong protection against unauthorised changes, network management tools, Pro services and a tweaked interface are all included in Trend Micro Internet Security Pro.

The 'Pro' version distinguishes it from a slightly cheaper standard version of Trend Micro Internet Security. While both offer the usual antivirus, spam, spyware and phishing, plus firewall, parental and privacy controls, Pro (for a premium of about £8) also includes Remote File Lock, a password-protected vault that can be remotely 'sealed' should you lose your PC, and System Tuner, a less ruthless version of CCleaner, which frees up disk space and cleans out dud registry entries.

Trend Micro Internet Security Pro

System Tuner is like a less ruthless version of CCleaner

Last but not least, Trend Micro Internet Security Pro's Transaction Protector keeps a watchful eye on Wi-Fi networks and encrypts your keystrokes. In line with its Symantec and McAfee rivals, Internet Security Pro can be installed on up to three PCs, so it represents decent value.

Trend Micro Internet Security Pro, like many other antimalware products, relies on heuristics to provide continuous protection, although here the technology goes by the name of PIB (Proactive Intrusion Blocking).

Trend Micro works unobtrusively in the background, automatically deciding whether or not a pattern of behaviour is suspicious. Its malware detection credentials remain high - Trend Micro Internet Security Pro has a Virus Bulletin's VB100 award and is certified by both ICSA Labs and by West Coast Labs for virus detection and virus removal.

West Coast Labs has also awarded Trend Micro Internet Security Pro a Checkmark certification for detection of spyware, Trojan horses and malware.

Spyware protection is also much improved. Trend Micro Internet Security Pro scans every file upon access, and checks all incoming and outgoing email for viruses. You can also scan web-based email attachments, but you have to turn on this feature. A number of features like this are turned off by default, which probably isn't a good idea.