Upcoming Let’s Encrypt certificate chain change and impact for Cloudflare customers
ID: 1bc1ada4-8406-576f-800a-2277725728a5
STIX ID: report--1bc1ada4-8406-576f-800a-2277725728a5
Feed Name: Cloudflare Blog
Cloudflare will transition all new Let’s Encrypt certificates to the ISRG Root X1 chain on May 15, 2024, ahead of the IdenTrust cross-signed chain’s expiration on September 30, 2024, which may affect a small share of legacy clients (notably Android ≤7.1.1). The report provides impact metrics, recommends updating trust stores and avoiding certificate pinning, and notes Enterprise options to switch to Google Trust Services, positioning the change as part of advancing a more agile, secure PKI ecosystem.
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