Banks Are Already Preparing for Quantum Attacks #fintech #security

Added: 2026-05-16

[00:00:00]Number one is online banking. Most major banks are still running on two security protocols, RSA 2048 and TLS 1.2. They sit directly in the crosshairs of Shor's algorithm. RSA 2048 means the encryption key is 2048 bits long, and that length makes it hard to crack classically.

[00:00:17]However, a sufficiently powerful quantum machine doesn't care about that length.

[00:00:21]It factors the underlying mathematics in a matter of hours instead of millennia like classical computers would take.

[00:00:27]TLS, the transport layer security, is the protocol that encrypts the connection between your browser and your bank server. Every time you log in, transfer money, or check your balance, that session runs over TLS. Trillions of dollars in daily transactions flow through this stack globally, and the infrastructure supporting it was built across decades. Legacy banking systems do not upgrade fast. The path from say the National Institute of Standards and Technology publishing a post-quantum standard to every bank adopting that standard isn't happening in a matter of months. It takes longer than a decade, and that gap is exactly where the threat lives. This