Malicious network attackers rely on insecure sites to get a foothold towards your users. Even if you believe that your site does not host personal information, using HTTP puts your users at increased risk of network attackers injecting malicious content into their browsers. We encourage you to fully adopt HTTPS and redirect all HTTP URLs to their HTTPS equivalents. If you're a developer, you can ensure your users don't see warnings or encounter failed upgrades on your sites by using HTTPS and ensuring that your site doesn't host content only accessible over HTTP. Information for Developers and Enterprise And if you want stronger protections, you can also turn on HTTPS-First Mode by enabling "Always use secure connections" in Chrome security settings (chrome://settings/security)! If you'd like to try out HTTPS upgrading or warning on insecure downloads before they roll out to everyone, you can do so in Chrome today by enabling the "HTTPS Upgrades" and "Insecure download warnings" flags at chrome://flags. We're expecting to roll out these warnings starting in mid September. Unless HTTPS-First Mode is enabled, Chrome will not show warnings when insecurely downloading files like images, audio, or video, as these file types are relatively safe. You will still be able to download the file if you're comfortable with the risk. This warning aims to inform people of the risk they're taking. Downloaded files can contain malicious code that bypasses Chrome's sandbox and other protections, so a network attacker has a unique opportunity to compromise your computer when insecure downloads happen. While this change can't protect against active network attackers, it's a stepping stone towards HTTPS-First mode for everyone and protects more traffic from passive network eavesdroppers.īuilding and expanding on our previous work removing support for mixed downloads, Chrome will start showing a warning before downloading any high-risk files over an insecure connection. We're currently experimenting with this change in Chrome version 115, working to standardize the behavior across the web, and plan to roll out the feature to everyone soon. due to a site providing an invalid certificate or returning a HTTP 404), and will automatically fallback to This change ensures that Chrome only ever uses insecure HTTP when HTTPS truly isn't available, and not because you clicked on an out-of-date insecure link. While the web isn't quite ready to universally enable HTTPS-First Mode today, we're announcing several important stepping stones towards that goal.Ĭhrome will automatically upgrade all navigations to http s ://, even when you click on a link that explicitly declares This works very similarly to HSTS upgrading, but Chrome will detect when these upgrades fail (e.g. Our goal is to eventually enable this mode for everyone by default. HTTPS-First Mode lets Chrome deliver on exactly that promise, by getting explicit permission from you before connecting to a site insecurely. We believe that the web should be secure by default. Chrome shows a warning in the address bar when a connection to a site is not secure, but we believe this is insufficient: not only do many people not notice that warning, but by the time someone notices the warning, the damage may already have been done. However, a stubborn 5-10% of traffic has remained on HTTP, allowing attackers to eavesdrop on or change that data. Thankfully, that means that most traffic is encrypted and authenticated, and thus safe from network attackers. For the past several years, more than 90% of Chrome users' navigations have been to HTTPS sites, across all major platforms.
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