Prepare for Q-Day Post-Quantum Security
Summary
DIAM warns that infrastructure and assets created today may outlast current cryptography and require post-quantum planning. The announcement explains that sensitive data can retain value for decades, urging the community to build adaptable, quantum-proof systems before Q-Day to protect long-lived assets and infrastructure.
The biggest misconception about quantum risk is that nothing matters until a sufficiently powerful quantum computer exists.
Infrastructure does not work that way.
Systems being deployed today may remain operational for years or decades.
Assets created today may still need protection when cryptographic standards change.
Sensitive information captured today may retain value far into the future.
That creates a simple problem:
The security lifetime of the data can exceed the security lifetime of the cryptography protecting it.
This is why post-quantum security is increasingly becoming an infrastructure planning issue rather than a distant research topic.
You do not prepare for cryptographic transition after the assumptions fail.
You build systems capable of adapting before they do.
Q-Day is an event. Preparation is a process.
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