• by Joe Mandese  @mp_joemandese, September 28, 2010

PubMatic this morning unveiled a new "data firewall" system,  giving online publishers the ability to manage third-parties that are tracking their audience via pixels or cookies and, in many cases, causing "data leakage."

In an announcement, Pubmatic said, "Data leakage occurs when third-parties track a publisher's audience without the knowledge of the publisher, a problem that has grown considerably in the past year." PubMatic estimates that data leakage costs publishers up to $ 1 billion annually in lost revenues.