It’s not just about speed. Quantum computers can solve problems that are not possible to solve on regular computers, or would take thousands of years to complete.
Yeah I read that encryptions that would take today’s computers 200 to 400 years to crack will take 2 to 4 hours for quantum computers to crack.
I guess updates will need to be made to protect sites. Not in the near future, I don’t think.
Or maybe. I don’t know :)