{"data":{"id":"17ec2c22-b52f-4b60-b751-841db511bfbc","title":"Measuring LLMs’ Ability to Perform Cryptanalysis","summary":"Researchers created CryptanalysisBench, a test measuring whether LLMs (large language models) can find mathematical attacks against encryption algorithms. Advanced AI models successfully broke many historical encryption schemes and even discovered new, previously unknown attacks, showing that AI is becoming capable at cryptanalysis (finding weaknesses in cryptographic systems that protect digital security).","solution":"N/A -- no mitigation discussed in source.","labels":["research","security"],"sourceUrl":"https://www.schneier.com/blog/archives/2026/07/measuring-llms-ability-to-perform-cryptanalysis.html","publishedAt":"2026-07-29T01:47:05.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"info","attackType":[],"issueType":"news","affectedPackages":null,"affectedVendors":["Anthropic"],"affectedVendorsRaw":["Anthropic","Claude Opus","Claude Sonnet","OpenAI GPT-5.5","GLM-5.2"],"classifierModel":"claude-haiku-4-5-20251001","classifierPromptVersion":"v3","cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":null,"epssScore":null,"patchAvailable":null,"disclosureDate":"2026-07-29T01:47:05.000Z","capecIds":null,"crossRefCount":0,"attackSophistication":"advanced","impactType":["integrity"],"aiComponentTargeted":"model","llmSpecific":true,"classifierConfidence":0.92,"researchCategory":null,"atlasIds":null}}