This would be pretty easy to test. Just get a bunch of friends to start exchanging encrypted messages about bombing an embassy or govt office. If these douche-bags can break it, they'd be on you like white on rice.
Great idea Einstein

spend 20 years in prison to test if the NSA can break sha256. Go ahead you first
They can break if they start using or producing the quantum computers, as these are known as very powerful computers but until now i don't think they brought the bitcoin.