Decoding the Quantum Threat: Konstantinos Karagiannis on "Harvest Now, Forge Later" and the Collapse of Digital Trust
Techstrong TV Interviews
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27-Feb-2026
Think "Q-Day" is a decade-long fairytale? As Protiviti’s Konstantinos Karagiannis—a inaugural member of our Quantum Security 25—joins Techstrong TV, he makes it clear that the countdown to cryptographically relevant quantum computers is accelerating faster than even the optimists predicted. Karagiannis shifts the conversation from simple data exposure to the more devastating "Harvest Now, Forge Later" (HNFL) threat, where forged identities and compromised code-signing keys could cripple entire government agencies and financial institutions in mere days. We're beyond the "waiting game"; it’s time to bridge the gap between quantum physics and offensive security before our existing cryptographic foundations crumble.
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