No, you changing your passwords doesn't mean anything. Quantum computers will be able to break asymmetric encryption, not symmetric ones such as AES. Researche

No, you changing your passwords doesn't mean anything. Quantum computers will be able to break asymmetric encryption, not symmetric ones such as AES. Researchers are working on cryptographic systems for this, which are based on algorithms that cannot be solved by quantum computers. (Called Post-Quantum Cryptography) Right now, asymmetric cryp. works on two computationally hard problems (integer factorization and discrete logarithms -- RSA and ElGamal).