WSJ.com - Aiming to Fix Flaws, Microsoft Buys Another Antivirus Firm: "With Sybari, Microsoft gains a specialist in software that filters out viruses, worms and spam from big e-mail systems. Microsoft didn't disclose terms of the deal, but some analysts estimate it to be valued at $140 million to $180 million, based on financial details Sybari had filed with the Securities and Exchange Commission as part of a plan to take its stock public this year. The East Northport, N.Y., company, was founded in 1995.
The deal builds on existing work at Microsoft to create antivirus software for personal computers. These programs are based partly on technology and expertise Microsoft acquired in 2003 when it purchased a Romanian antivirus company. In addition, in December Microsoft bought a small maker of software for stopping spyware; it released a test version of that program last month."