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flag TLS certificates now last max 200 days, cutting down to 47 days by 2029 to boost security and force automated management.

flag On March 15, 2026, the maximum lifespan of publicly trusted TLS certificates was reduced from 398 to 200 days, marking the first phase of a planned industry shift to shorten validity periods to 47 days by 2029. flag Approved by the CA/Browser Forum, the change aims to improve digital security by enabling faster response to evolving threats, including those from AI, and ensuring certificates reflect current organizational identities. flag Shorter lifespans increase renewal frequency, making manual tracking ineffective and requiring automated certificate lifecycle management systems to prevent outages and maintain compliance. flag Early adoption of such tools has shown significant returns, with one study reporting a 312% ROI and substantial labor savings, while also preparing organizations for future challenges like post-quantum cryptography.

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