Vista is expected to give users and enterprises a headache on the security front. That's the word from analysts at the Yankee Group, who reckon that the next incarnation of Windows will contain security measures that end users may find disruptive, and may also cause short-term pain for independent software vendors.

In the report, entitled "Microsoft’s Vista Won’t Stop the Windows Security Aftermarket," the Yankees say the aftermarkets for anti-spyware and desktop firewalls will experience the most dramatic decline.

Deployment of Vista will also slightly decrease the need for third-party products for disk encryption, device control and certain host intrusion prevention software (HIPS), they reckon.