"Right now, we're really just having to trust the companies to tell us how they share the information," Jennifer Lynch, an attorney for the Electronic Frontier Foundation, said.

Lynch is a privacy expert for the Electronic Frontier Foundation, which is located in San Francisco. She's concerned how private investigators might use this information.

Lynch told 7 On Your Side, "That would mean that, for example, divorce attorneys could have access to it, people who are trying to stalk people from prior relationships could have access to it."

Friday, February 20, 2015
ABC 7 News