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Let’s Encrypt will cut its default TLS certificate lifetime from 90 days to 64 days on February 10, 2027, giving website operators less time between renewals. The change applies to certificates issued or renewed from that date, while subscribers can still choose shorter certificate profiles offering 45 days or roughly six days. Let’s Encrypt Certificate Lifetime According to the October 7 announcement published by Let’s Encrypt , the nonprofit certificate authority confirmed the schedule. Existing certificates will remain valid until their normal expiry dates, and Let’s Encrypt will not revoke them as part of the transition. It expects the final 90-day certificate to expire on May 11, 2027. The shorter lifetime limits how long a certificate can remain trusted after a private key is stolen or a certificate is issued incorrectly. It also makes reliable renewal systems more important, especially for teams still using fixed schedules or manual steps. The move is part of the wider shift toward shorter public TLS certificate lifetimes. Cybersecurity News previously covered the CA/Browser Forum’s plan to reduce maximum validity to 47 days . Let’s Encrypt is moving faster, with its default profile set to 45 days on February 16, 2028, as outlined in its earlier certificate lifetime roadmap. Let’s Encrypt will start issuing 64-day certificates in its staging environment on October 14, 2026. Administrators can use this test service to check renewal behavior before the production change. Staging certificates are not trusted by browsers and should not replace certificates on live websites. For automated setups, the key feature is ACME Renewal Information, or ARI. ACME is the protocol used to request and renew certificates automatically. ARI lets Let’s Encrypt tell a supported client when to renew, helping it adjust to shorter lifetimes without relying on a fixed calendar. Administrators should check their client’s documentation to confirm ARI support. When ARI isn’t available, Let’s Encrypt recommends renewing at about two-thirds of the certificate’s lifetime. For a 64-day certificate, that means around day 43, rather than waiting until the old 60-day renewal point. The authority also recommends searching cron jobs, wrapper scripts, and runbooks for hardcoded values such as 83, 80, or 60. These numbers may reveal renewal rules designed around 90-day certificates. Updating those rules now also prepares systems for the 45-day default planned for 2028. Alongside certificate validity, Let’s Encrypt will reduce authorization reuse from 30 days to 10 days. This is the period during which an earlier domain control check can support another certificate request without repeating that check. The reuse period will fall to seven hours in 2028. Let’s Encrypt says this supports upcoming validation rules and removes the need for separate Certificate Authority Authorization rechecks on older validation data. Most subscribers will not need changes unless their ACME setup specifically depends on authorization reuse. Rate limits will not change because of the shorter lifetimes, according to Let’s Encrypt’s rate limit guidance. ACME endpoints and certificate issuance chains will also remain unchanged. Operators should test the full certificate workflow, including deployment and service reloads, rather than checking renewal alone. Teams managing many websites should also confirm that renewed certificates reach every server and that monitoring checks the certificate actually served to users after each reload. Alerts for failed renewals can help teams catch problems before expiry. The practical priority is dependable automation that keeps certificates current as renewal windows shrink. Cut every SOC alert investigation by 21 min. Power your SOC with instant IOC context for immediate response: Integrate TI Lookup into your SOC The post Let’s Encrypt Cuts TLS Certificate Lifetimes From 90 to 64 Days Starting February 2027 appeared first on Cyber Security News .

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Google’s Gemini Desktop app may soon introduce a “Full Access” permission that would let the AI assistant read files, control applications, access network services, and take action across a user’s Mac. The capability appears to be part of a hidden “Additional sandbox options” setting discovered in a recent version of the Gemini Desktop app . The reported feature would significantly expand Gemini’s computer-use capabilities beyond its existing role as a conversational AI assistant. If enabled, the permissions could let Gemini interact with a user’s local environment in ways normally reserved for trusted desktop applications, including accessing files outside explicitly connected folders. According to the discovered permission text, enabling additional sandbox options may allow Gemini to read, create, modify, or delete files anywhere on a Mac. Apple also plans to add stronger controls to Full Disk Access in macOS , warning that the powerful permission can expose a user’s most private data as AI agents become more capable.  Google Gemini Computer Access This could include files outside the folders connected to Gemini, as well as files belonging to other people stored on the same device. The setting could also permit the application to communicate with other installed programs, such as Mail, Safari, and Messages, and perform actions through those applications. The permission model may also enable Gemini to send and receive data over the network without requesting approval for every connection. In practice, that could allow the AI agent to access websites , APIs, cloud services, and accounts where the user is already signed in. Such access could make Gemini more useful for multi-step tasks, including researching information, organizing documents, drafting emails, completing web-based workflows, and interacting with enterprise tools. However, the feature introduces important cybersecurity and privacy concerns. An AI agent with unrestricted access to files, browser sessions, network services, and messaging applications would become a high-value target for attackers. A prompt injection attack, malicious web page, compromised browser session, or unsafe instruction could potentially influence an agent with broad permissions. For example, a user may ask Gemini to summarize documents from a folder. If Gemini is simultaneously allowed to browse the web and communicate with other applications, a malicious webpage could attempt to manipulate the agent into collecting sensitive files, opening authenticated services, or sending data externally. The risk is not limited to malicious AI prompts ; it also includes compromised websites, untrusted documents, deceptive emails, and vulnerable third-party applications. Google reportedly plans to keep additional confirmation requirements for particularly sensitive actions. Gemini would still ask for user approval before purchasing products, creating accounts, accepting legal terms, or modifying sensitive personal information. This indicates that Google may use a tiered permission approach, separating ordinary computer-use actions from higher-risk decisions. The full-access option is currently hidden, and Google has not formally announced it. TestingCatalog suggested the computer-use capabilities could relate to a future Gemini 4-powered experience, though this remains unconfirmed. Organizations should treat such AI-agent permissions carefully when they become available. Security teams should restrict access to sensitive folders, avoid enabling broad permissions on unmanaged devices, apply least-privilege controls, and closely review what data and applications an AI assistant can access. Cut every SOC alert investigation by 21 min. Power your SOC with instant IOC context for immediate response: Integrate TI Lookup into your SOC The post Google Gemini Will Soon Get Full Access Permission to Use Your Computer appeared first on Cyber Security News .

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