There are a lot of sick people out there. They're smart and motivated. And as with anything that is connected to the Internet, you have to assume that nothing is 100% secured and you have to do your own due diligence to make sure you do everything to make it difficult for hackers.
Notice I didn't say lock out hackers. I said make their lives difficult. Again, nothing is completely secured and locked down.
If Russian authorities do not act, the British will work with our Federal Trade Commission to shut it down. It's uncertain how that can be accomplished. Right now, the West and Russia are at odds over Putin's adventure to annex more of Ukraine.
Source: The Guardian.