Kelvin’s machine learning flags concerning comments like those related to self-harm and violence and notifies admins. However, no system is perfect. We recommend using other services like GoGuardian or Securly to monitor all web traffic for concerning comments and troublesome browsing activity. These tools were built for this purpose and can flag you of concerning comments in Kelvin as well as those made in other places like emails, search engines, chats, Google Docs, etc.