"Richard Forno, assistant director of the UMBC Center for Cyber Security, noted that researchers have found many companies that use technology like NaviStone's but don't disclose it in their privacy policies.
"It's not surprising that companies are probably violating their own policies because of this," he said. "But then again, who reads the privacy policies? ... People don't even know what privacy policies are sometimes." Read more about E-commerce tracking practices raise privacy questions