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Threat Actors & CampaignsEmerging1 sourceAug 28, 2026 · 14:01via Tenable Blog

Why a cryptographic inventory is key for addressing the quantum computing threat

Brief

When quantum computers become generally available, they’ll be able to crack current public-key cryptographic algorithms, putting digitally stored and transmitted data at risk. But the threat already exists, as attackers use the "harvest now, decrypt later" tactic.

Discover why building a comprehensive cryptographic inventory and executing a phased operational strategy are critical for protecting your data against quantum computing attacks.

Key takeaways

  • Quantum computing risks are an operational threat today due to "harvest now, decrypt later" (HNDL) tactics, in which adversaries actively harvest and store encrypted data to decrypt it retroactively once quantum capabilities mature.
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