On Tuesday a new pact, Privacy Shield, went into effect between the U.S. and the European Union, giving American companies a simpler alternative to dealing with the E.U.'s normal data protection rules when shuttling data across the Atlantic.

Businesses can sign up to participate starting on Aug. 1, Reuters reported. Firms like Google and Microsoft are already planning to, but Facebook is allegedly waiting to evaluate the text of the pact, and there is no word yet on whether Apple will come onboard.

An earlier data agreement — Safe Harbor — was in place for about 15 years, but was in October was ruled invalid by the European Court of Justice, which expressed concerns about intrusion by U.S. intelligence agencies. In 2013, former NSA contractor Edward Snowden revealed numerous overreaches by the organization, such mass surveillance at home and even the tapping of German Chancellor Angela Merkel's cellphone. In some cases high tech firms like Apple and Microsoft were instrumental to the NSA's activities, whether willing or otherwise.

In theory Privacy Shield will give Europeans a safety net if they feel their data is being abused. This includes an ombudsman at the U.S. State Department, an annual review conducted by the European Commission and the U.S Department of Commerce, and cooperation between European privacy agencies and the U.S. Federal Trade Commission.

The pact is expected to be challenged in court by groups that say it doesn't do enough to protect Europeans.