Do I need to worry about quantum computers breaking my passwords right now (2026)?

[Frost Orca]

I keep seeing headlines about quantum computers breaking encryption, is this actually a near term risk for normal people or still mostly theoretical?

[Gateway Mia]

Can a quantum computer break my passwords today?
No. Current quantum computers have around 1,000 to 1,500 physical qubits, while breaking the encryption behind things like online banking and password managers is estimated to need anywhere from several thousand to several hundred thousand qubits depending on the method used

So there's genuinely nothing to worry about yet?
The near term risk isn't your password specifically, it's a threat called harvest now, decrypt later, where someone could record your encrypted data today and simply wait for a powerful enough quantum computer to exist before decrypting it

What kind of data is actually at risk from that?
Mostly data with a long shelf life that needs to stay private for years, medical records, government or legal documents, and long term encrypted communications, rather than something like a one time login session

Are companies actually doing anything about this yet?
Yes, post quantum cryptography standards already exist and are being adopted, the ISO recently standardized an algorithm called Classic McEliece specifically for this purpose, and major browsers and services have already started rolling out quantum resistant encryption options

Is there anything an individual should actually do right now?
Not much beyond normal good security habits, using a password manager, enabling two factor authentication, and not reusing passwords matters far more for your actual day to day risk than quantum computing does at this stage

[Luke_67]

TL;DR
- Current quantum computers are nowhere near powerful enough to break real world encryption
- The real near term concern is data being harvested now and decrypted later
- Mostly matters for long shelf life sensitive data, not everyday logins
- Post quantum standards already exist and are being rolled out by major services
- Normal password hygiene still matters more than quantum computing for individuals right now

[HollywoodHogan92]

The harvest now decrypt later thing is the part that actually gets me, doesn't matter that today's computers can't do it if someone's already logging the data for later