Security has been one of Chrome’s core principles since the beginning. Nearly two years ago, Google announced that Chrome would eventually mark all sites that are not encrypted with HTTPS as “not secure”. This makes it easier to know whether your personal information is safe as it travels across the web, whether you’re checking your bank account or buying concert tickets.

Google is now rolling out these changes to all Chrome users.

When you load a website over plain HTTP, your connection to the site is not encrypted. This means anyone on the network can look at any information going back and forth, or even modify the contents of the site before it gets to you. With HTTPS, your connection to the site is encrypted, so eavesdroppers are locked out, and information (like passwords or credit card info) will be private when sent to the site.

Chrome’s “not secure” warning helps you understand when the connection to the site you’re on isn’t secure and, at the same time, motivates the site’s owner to improve the security of their site. Since Google’s announcement nearly two years ago, HTTPS usage has made incredible progress.