Qryptonic Analysis Finds Zero Enterprise Endpoints Ready for the Post-Quantum Transition
Qryptonic Analysis Finds Zero Enterprise Endpoints Ready for the Post-Quantum Transition
Synopsis- Qryptonic’s Quantum Exposure Index reports that none of the analyzed enterprise endpoints have adopted post-quantum cryptography.
- The study finds universal reliance on quantum-vulnerable key-exchange mechanisms, exposing encrypted data to harvest-now-decrypt-later risk.
- Results show that modern cryptographic adoption, including TLS 1.3 and Perfect Forward Secrecy, does not equate to quantum safety.
Qryptonic has published new findings indicating that enterprises remain broadly unprepared for the post-quantum era. In its Quantum Exposure Index, the company reports that none of the publicly observable enterprise endpoints it examined have implemented post-quantum cryptography or hybrid post-quantum key exchange. The analysis, carried out using Qryptonic’s QScout26 quantum-readiness assessment platform, highlights widespread dependence on cryptographic mechanisms that are expected to become vulnerable once cryptographically relevant quantum computers emerge.
Using QScout26, Qryptonic evaluated 528 publicly reachable enterprise endpoints, consisting of 351 accessible domains drawn from the Tranco Top 500 ranking and 192 additional endpoints spanning five sectors: Finance, Healthcare, Government, Energy, and Retail. Across this dataset, the company observed that every endpoint relied on key-exchange methods susceptible to future quantum attacks, including Elliptic Curve Diffie-Hellman Ephemeral (ECDHE).
According to the analysis, 83.8 percent of the observed endpoints have already migrated to TLS 1.3, reflecting strong adoption of modern cryptographic standards. However, the report emphasizes that TLS 1.3 alone does not mitigate quantum exposure. Sector-level differences were also noted. Finance and Healthcare exhibited the lowest adoption of modern cryptography, with approximately 67 percent TLS 1.3 usage, compared with roughly 88 percent in the Retail sector. Perfect Forward Secrecy was found to be universal across all observed endpoints, yet the study concludes that this protection does not address the risk of future mathematical breakthroughs enabled by quantum computing.
Mark Schrick, Vice President of Quantum Security at Qryptonic, said the findings underscore a critical distinction between contemporary security practices and long-term cryptographic resilience. He noted that even organizations deploying the latest versions of TLS and forward secrecy should assume that encrypted data transmitted today could be decrypted in the future under a harvest-now-decrypt-later model.
The Quantum Exposure Index does not attempt to predict when large-scale quantum decryption will become feasible. Instead, it evaluates exposure by asking whether data encrypted today could be retroactively decrypted if quantum capabilities mature. Independent assessments referenced in the report, including research from the Global Risk Institute and government transition guidance, suggest a non-trivial probability that cryptographically relevant quantum computing could emerge before the end of the decade, with estimates ranging from single-digit to low-teens percentages by 2029. While timelines remain uncertain, the report argues that the asymmetry of risk lies in the persistence of sensitive data that can be harvested now and decrypted later.
Schrick added that the central danger is not migrating to post-quantum cryptography prematurely, but rather discovering after the fact that sensitive information was already collected under assumptions that no longer hold.
Methodologically, the Quantum Exposure Index is based entirely on publicly observable TLS handshakes. The analysis does not involve exploitation, authentication bypass, traffic decryption, or access to private systems. Measurements focused on protocol versions, cipher suites, key-exchange mechanisms, and the presence or absence of post-quantum or hybrid cryptography. The scope is limited to public-facing infrastructure, with no claims made about internal controls or compensating measures. Full methodological details and limitations are documented by Qryptonic.
The company also discloses that it provides quantum-readiness assessments and post-quantum cryptography migration services, including the QScout26 platform used in the study. The Quantum Exposure Index is positioned as an effort to advance understanding of long-term cryptographic risk rather than a breach notification or incident report.
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About Qryptonic
Qryptonic is a cybersecurity firm focused on post-quantum risk measurement, validation, and mitigation. The company specializes in identifying long-term cryptographic exposure arising from advances in quantum computing and supporting enterprises as they prepare for a transition to quantum-resistant security. Its QScout26 platform is designed to provide cryptographic discovery and quantum exposure analysis by examining publicly observable enterprise infrastructure. Qryptonic’s work centers on helping organizations understand whether encrypted data transmitted today may be vulnerable to future decryption, particularly under harvest-now-decrypt-later scenarios. In addition to assessment capabilities, the company supports planning and migration efforts toward post-quantum cryptography to align security, compliance, and long-term data protection strategies. Qryptonic publishes independent research, including the Quantum Exposure Index, to contribute to industry awareness of cryptographic risk while clarifying that such analyses do not constitute breach claims or security incident disclosures.
Featured image Source: MIT
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