Big Brother is Watching You. Yes, YOU.

As for spying on us (putting on my tinfoil hat here), I would lean towards them having quantum computers already, and just not telling us. I'm no cryptography expert, but you could also continually expand a cluster of computers for greater computational power even now, but I'm not sure how well decryption of a message could be distributed since context and size do influence a cipher's message, whereas the design principle of distributed computing is to break things up into smaller chunks (divide and conquer) then rejoin them later.
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