The theoretical threat of Cryptographically Relevant Quantum Computers (CRQCs) breaking current widespread encryption algorithms (like RSA and ECC) is fast becoming a practical reality. Organizations must recognize the immediate danger of 'Harvest Now, Decrypt Later' (HNDL) attacks being executed by state-sponsored intelligence agencies today.
In an HNDL attack, adversaries actively siphon and store highly sensitive, encrypted corporate and government communications traversing the internet. While they cannot crack the encryption today, they are hoarding the data with the expectation that a functional quantum computer will easily decrypt it within the next decade.
To combat this long-term threat horizon, enterprises must immediately begin their transition to Post-Quantum Cryptography (PQC). Security architects need to initiate comprehensive cryptographic inventories to understand exactly where vulnerable algorithms are deeply embedded in legacy systems and hardware.
We strongly advise organizations to adopt a 'crypto-agile' architecture. As NIST finalizes its standard PQC algorithms, systems must be designed to hot-swap cryptographic primitives without requiring massive infrastructure overhauls or software rebuilds.
Cryptographic Engineering
Research Lead