Securing your data on even the best Synology NAS is incredibly important. Much like any online account, it's best to use two-factor authentication, or better yet multi-factor authentication. DSM 7.0 introduced support for the latter with a shiny new SignIn app that helps protect your NAS and sensitive data.
This guide is tailored to Synology DSM 7.0, but two-factor authentication initialization on earlier OS versions is similar.
Full story from the WindowsCentral blog...