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Microsoft set another Patch Tuesday record for the number of security fixes issued, the third such record in just a few months, as engineers scramble to address a surge of vulnerabilities. Sources say the spike began in April after Anthropic's Mythos model was used to discover software flaws at an unusually rapid pace. The trend reflects a broader shift in cybersecurity, where advanced AI models are increasingly being used to find vulnerabilities faster than defenders can patch them, forcing major software vendors like Microsoft to accelerate their own response cycles.