Trend Micro has raised anti-trust concerns over Microsoft's free Security Essentials anti-virus tool for Windows.
Tech news site Computer World reports that Carol Carpenter, the general manager of the consumer and small business group at Trend Micro said: “Commercialising Windows Update to distribute other software applications raises significant questions about unfair competition. Windows Update is a de facto extension of Windows, so to begin delivering software tied to updates has us concerned.”
The statement comes after Microsoft started offering Security Essentials as an optional download with the Windows Update service in the US and the UK.
The tool only appears for download if Windows Update doesn't detect an anti-virus software on the operating system.
In response, Microsoft said: "By offering Security Essentials as an optional download for PCs that are unprotected, we make it easy for those who want and know they need protection, but for whatever reason have not gotten around to installing it."