Crossbeam Closes Series F

Crossbeam Systems Inc., a Boxborough, Mass.-based provider of network security solutions, has raised $21 million in Series F funding. Tudor Investment Corp. led the deal, and was joined by return backers Charles River Ventures, Commonwealth Capital Venture Partners, Focus Ventures, Intel Capital, Matrix Partners and North Bridge Venture Partners. Crossbeam has now raised around $102 million in total VC funding since its 2000 inception. www.crossbeamsystems.com