Some autistic genius mathematician just published a solution to the long-standing problem of P-hard problems being equivalent to NP-hard. The solution just hit Reddit, Slashdot, math.stackexchange.com and several hang-outs of the world's best mathematicians.
You don't need a quantum computer. You just need a pencil, a notepad and enough mathematics knowledge to understand the proof (say, graduate maths/physics/CS level) and your specific variant of a given NP-hard problem, and you're able to transform it into a P-hard problem and have your PC crack given hash or re-create a private key from a public key in less than a minute after you finish transforming your mathematical solution into a Matlab script.
It's matter of hours until all of SSL, including SSH is broken. By tomorrow TOR will be insecure, and zero-day exploits spoofing website certificates will be available for sale. Probably somebody is already writing a hacked Bitcoin 'miner', not realizing the cryptocurrency just lost all value. And that's just the beginning...
What would be the global impact? While the general term "global security crisis" has a nice ring to it, and I can picture the direct impact on the IT domain, I can't quite imagine just how would it look like in practice, from a Joe Average's viewpoint. Would armies get involved? Would there be riots? How would the governments deal with it?
What kind of impact on the life of common people would this kind of crisis have?