As ZDNet reports, Microsoft has come clean and admitted that your EU-based cloud data isn't safe from sneaky US government spying authorized by the USA Patriot Act. Companies don't like to admit this, but it's true for basically any data on the internet, if the company that holds it (think Google) is based in the US.
That's one reason many large telecoms and technology firms are lining up with the ACLU to support reform of the 1986 law, the Electronic Communications Privacy Act, written before the internet existed. As we wrote here yesterday, Senator Pat Leahy of Vermont has introduced an updated ECPA bill, but it is seriously lacking due to a loophole the size of the ocean. Anything "national security" related won't be covered by warrant protections in his legislation.
Take action and urge your representatives to support real ECPA reform.