Hackers exploit quantom cryptography

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SUMMARY

Hackers are exploiting vulnerabilities in quantum cryptography by manipulating the timing of entangled states. The discussion highlights the need for improved detectors that can accurately measure disturbances without simply recording binary values. A significant concern is the potential for an attacker, referred to as Eve, to exploit time lags in communication between parties, allowing her to remain undetected while interfering with the quantum state. This raises critical questions about the robustness of current quantum cryptographic systems against sophisticated attacks.

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So they need to make better detectors that don't just record a bit value of 1 if a classical "bright light pulse" is received
 
Thats an interesting article.
 
DrChinese said:
Welcome to PhysicsForums, Kidphysics!

Thank you Dr.C, I hope to learn as much as I can here, and I see that there are some really helpful people here too.

This article is troubling though. Someone pointed out that there would be a buffer in time between Eve's interference on the entangled state and the time Bob records a message. So one of the original hacker's response was that Eve could compensate this lag by cutting corners in the route from A to B, freeing up time needed to remain incognito.

I haven't learned about QM yet, but one would assume that collapsing an entangled state should lead to much more intimate and precise (especially with time) measurements of disturbance. At least, these are the properties QM can boast.
 

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