In an open letter sent to the chief privacy officers of high profile companies like Microsoft, Google/Youtube, Facebook, AOL/Bebo, Yahoo, Amazon and Ebay, the Open Rights Group encourages them to block Phorm from profiling their websites.

ORG considers that the Phorm/Webwise system is illegal. Communications, they say, "cannot be lawfully intercepted, as this system does, without the informed consent of both the sender and receiver."

The letter goes on describing how Webwise "will make copies of copyright material without permission, a further unlawful activity."