Private companies and the federal government are both collecting enormous amounts of personal data, Democratic presidential candidate Bernie Sanders warned on Sunday evening, adding that public policy has not evolved rapidly enough to protect digital privacy rights.

“It is not only the government that we have to worry about, it is private corporations,” the Independent Vermont senator warned during the Democratic presidential debate aired on NBC. “You would all be amazed … about the amount of information that private companies and the governments have in terms of websites that you access, products that you buy, where you are this very moment,” he added. “It is very clear to me that public policy has not caught up with the explosion of technology.”