[jtms]

Encryption is either broken or its not. No one has broken modern strong encryption yet. Quantum computing as a threat to strong encryption is still purely theoretical. Also, you don’t need to use a quantum computer to break encryption when you hold the private keys, you just decode to plain text the normal way. This is exactly what they did

[ksaj]

Just to add a bit to this thought: Recent news about RSA keys and prime factoring seems to all be written as if there is pretty much no reason left to use encryption. But as jtms alludes, these important discoveries do have an immediate impact on weak encryption, which should be understood to mean decades-old outdated technologies. As far as strong encryption goes, quantum computing is still seriously far off unless a new discovery comes around to improve the results considerably.

Compared to the human life cycle, quantum cryptography is at the "on the verge of speaking in coherent sentences, but still prone to smearing feces on the wall" age and stage. You can sense that they'll grow up to be quite smart, but there's a lot of learning to go before you can hope for a Junior Einstein.