An anonymous reader quotes a report from BleepingComputer: A new tool released on GitHub last week can help paranoid sysadmins keep track of whenever someone plugs in or disconnects an USB-based device from high-value workstations. Called USB Canary, this tool is coded in Python and currently, works only on Linux (versions for Windows and Mac are in the works). The tool works by watching USB ports for any activity while the computer is locked, which generally means the owner has left his desk. If an USB device is plugged in or unplugged, USB Canary can perform one of two actions, or both. It can alert the owner by sending an SMS message via the Twilio API, or it can post a message in a Slack channel, which can be monitored by other co-workers. USB Canary can prove to be a very useful tool for large organizations that feature strict PC policies. For example, if you really want to enforce a "No USB drives" at work, this could be the tool for the job. Further, with modifications, it could be used for logging USB activity on air-gapped systems.