Verimatrix, a company that develops software and equipment to keep cable television from being illicitly intercepted by non-paying customers, has raised a third round of funding.

The company did not disclose the amount in a press release, but several sources, including Xchange, are reporting that it was $20 million.

Aside from traditional cable broadcasting, Verimatrix also works with IPTV, digital video broadcasting (DVB), and mobile delivery. It also provides forensic watermarking that resides in the video stream itself, so that a source can be identified in case of leaks.

JK&B Capital, Goldman Sachs and SunAmerica Ventures provides the funding round. Verimatrix is based in San Diego, Calif.