Cybersecurity

Let's Encrypt Halts Certificate Issuance After Cross-Signed Root Certificate Incident

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Let's Encrypt temporarily halted certificate issuance on May 8, 2026, due to a critical issue with a cross-signed root certificate. This precaution affected both production and staging environments but was resolved within hours, rolling back certificate generation to the Generation X root. Developers and tech professionals should monitor renewal logs for certificates issued around this period to ensure they chain correctly to the expected root.

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