Security Vendors Secure Funding

Sophos Zone Labs

TA Associates completed a minority investment of $60 million in Sophos, a corporate antivirus software maker headquartered in the U.K., to help drive the company's U.S. business. TA Associates is a Boston-based private equity and buyout firm.

Zone Labs, a maker of personal firewalls and other security products, said it won $24.5 million through a Series C round of financing. New investors include JK&B Capital, BA Venture Partners and Capital Guardian Trust Company.

Zone Labs, based here, said the funding will be used to build the company's enterprise business and help expand its international presence.