By default, Chrome uses the DNS servers provided by your ISP. Typically, they lack encryption support, making them insecure. Therefore, there is a risk that a malicious actor could manipulate the response from such a server. Additionally, your provider has the ability to log the websites you visit. To counteract this, the browser offers the option to use secure, third-party DNS services that utilize the DoH protocol.
Chrome, like any modern browser, offers its users the function of storing passwords for quick authentication on websites. Adding data occurs in semi-automatic mode when filling out a registration form. The login and password database is stored locally in a special file, and may also be duplicated in the “cloud” if synchronization is enabled.