honeybadger.ioは安全ですか？

As a developer I'm surprised this website is listed as suspicious, though I understand it. Honeybadger helps developers track errors in their software, to help find and fix bugs. A lot of modern websites use Javascript, which is code that is executed in your web browser to make the web page do more than just display text. Javascript is notoriously finnicky as a programming language, so the monitoring for errors is definitely useful. Errors have to be reported by the browser to Honeybadger, which is why it shows up as making JavaScript connections to their servers, similarly to how an ad-tracker service would show up. As a company they are pretty open about how they run things by charging developers money to use their service, so they have no need to dabble in ad tracking.