Europe’s top data regulator has warned social media companies and tech firms that the terms and conditions they set for consumers will come under increased scrutiny if they continue to obstruct people from accessing particular services unless they give blanket approval in exchange.

In a blogpost, European Data Protection Supervisor Giovanni Buttarelli said that “opaque” and “take it or leave” policies infringe consumers rights, restrict consumer choice, and may be anticompetitive, especially in those markets where the operators are a dominant provider.

Neil Hodge is a freelance business journalist and photographer based in Nottingham, United Kingdom. He writes on insurance and risk management, corporate governance, internal audit, compliance, and legal...