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Incorrect device clock blocks FT access

Financial Times readers attempting to access the publication’s website may have encountered a security verification block triggered by an incorrect device clock. The error, which manifests during Cloudflare’s security screening process, is

Incorrect device clock blocks FT access

Financial Times readers attempting to access the publication’s website may have encountered a security verification block triggered by an incorrect device clock. The error, which manifests during Cloudflare’s security screening process, is directly caused by a mismatch between the user’s device time settings and the actual time in their time zone. While a straightforward fix exists-updating the date and time on the device-the incident underscores a growing friction point in online security protocols that can disrupt legitimate access to paid content.

The root cause is a standard anti-bot measure. Cloudflare, a widely used content delivery network and security service, performs a TLS handshake and verifies the timestamp in the user’s SSL certificate against a trusted time source. If the device’s clock is off by more than a few minutes, the handshake fails, triggering a blocking page. This is a common security practice designed to prevent replay attacks and man-in-the-middle exploits, but it can also snare ordinary users whose devices have drifted out of sync.

For a professional readership-investors, analysts, and policymakers who rely on timely access to financial information-a false positive from a security gatekeeper is more than an annoyance. It represents a real-time disruption to workflow, particularly for those accessing the site from mobile devices, VPNs, or corporate networks where clock synchronisation might not be automatic. The Financial Times’s error message, while helpful, points to a broader tension between security and user experience in the digital news ecosystem.

The economic stakes are not trivial. A single delayed access to a breaking story on monetary policy or corporate earnings can alter a trading decision. While the FT’s error is a technical hiccup rather than a systemic failure, it highlights the dependence of the news-delivery infrastructure on third-party security layers. Publishers and platforms must weigh the cost of false positives against the value of blocking malicious traffic. Cloudflare’s own documentation acknowledges that time-based verification can be a pain point, yet it remains a standard component of the security stack for many high-traffic sites.

The wider implication for the financial information market is that even the most robust security architecture has a failure mode that penalises the legitimate user. As more publications adopt similar anti-bot measures to protect against scraping and credential stuffing, the tolerance for these disruptions may need to be recalibrated. For now, the fix is simple: users should ensure their devices are set to automatically sync time with a network time protocol server. Until security protocols become more adaptive to device drift, the onus remains on the end user to keep their clock accurate.

Source & Credits

Originally reported by Financial Times.

Written for Il Progresso by Xiaoyu Zhao.

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