In a statement Tuesday, EU Commission spokesman on competition Jonathan Todd said that the Commission believes that diversity and innovation in the security software market could be threatened if Microsoft doesn't allow reputable third-party security vendors to compete on an equal footing for customers.

The statements came in response to questions from journalists who had been briefed by Microsoft, Todd told InfoWorld.

Microsoft is reaching out to members of the press to express concern about the EC's stance on Vista security and to explain the reasoning that went into the company's decisions to integrate some security functions in the Vista operating system, according to Stephen Toulouse, of Microsoft's Security Technology Unit.

"We're doing what everyone asked us to do and making Vista secure," Toulouse told InfoWorld on Tuesday. "We believe we've set the security foundation higher in Vista than in other operating systems and we don't want to lower that," he said.

Microsoft is committed to delivering an EC-compliant operating system, and would abide by requests from the European Commission to remove security features if necessary, Toulouse said.