Understanding Left-Tail Risk
Why CISOs, CFOs, and General Counsel are acting now
What is Q-Day?
The day a cryptographically relevant quantum computer (CRQC) breaks RSA-2048 or ECC-256. All data encrypted with these algorithms—past and present—becomes readable.
What is Left-Tail Risk?
Low-probability, high-impact events that cannot be remediated after they occur. Risk managers don't wait for certainty—they quantify exposure and act on thresholds.
2029 Risk Window
5-10% probability of CRQC capability by January 1, 2029, based on 32 quantum computing experts surveyed in the "2024 Quantum Threat Timeline Report" (Global Risk Institute, December 2024).
You buy fire insurance at lower probability thresholds. Data being harvested today is at risk if Q-Day arrives.
Left-Tail Risk Window Opens In
Jan 1, 2029 — Global Risk Institute estimates 5-10% CRQC probability









