Quantum computers will be able to instantly break the encryption of sensitive data protected by today's strongest security, warns the head of IBM Research. This could happen in a little more than five years because of advances in quantum computer technologies. "Anyone that wants to make sure that their data is protected for longer than 10 years should move to alternate forms of encryption now," said Arvind Krishna, director of IBM Research.

Correct me if I'm wrong, but does it mean that my KeePass database that I uploaded on Dropbox is going to be broken in ~5 years time and I need to start changing my passwords right now?