On his personal blog, Mark Russinovich announced today that Sysinternals, a leading in repair software has been acquired by Microsoft.

I?m very pleased to announce that Microsoft has acquired Winternals Softwareand Sysinternals. Bryce Cogswell and I founded both Winternals and Sysinternals (originally NTInternals) back in 1996 with the goal of developing advanced technologies for Windows. We?ve had an incredible amount of fun over the last ten years working on a wide range of diverse products such as Winternals Administrator?s Pak, Protection Manager, Defrag Manager, and Recovery Manager, and the dozens of Sysinternals tools, including Filemon, Regmon and Process Explorer, that millions of people use every day for systems troubleshooting and management. There?s nothing more satisfying for me than to see our ideas and their implementation have a positive impact.

In Sysinternals portofolio are award-products such as Administrator?s Pak, Protection Manager, Defrag Manager and Recovery Manager and lots of free tools such as Filemon, Regmon and Process Explorer, used by many system administrators around the world.

That?s what makes being acquired by Microsoft especially exciting and rewarding. I?m joining Microsoft as a technical fellow in the Platform and Services Division, which is the division that includes the Core Operating Systems Division, Windows Client and Windows Live, and Windows Server and Tools. I?ll therefore be working on challenging projects that span the entire Windows product line and directly influence subsequent generations of the most important operating system on the planet. From security to virtualization to performance to a more manageable application model, there?s no end of interesting areas to explore and innovate.

Mark, known lately as the one who found and fought against Sony’s spyware, will be joining Microsoft as a Platform and Services Division tehnician.

More on his personal blog here.