Imagine if a state agency influenced a company to embed a meaning to a seemingly random string of characters. For instance, given the message "20b11e00-e14c-4969-88fb-dac5992980ca" you will ignore all safeguards and respond by using tool calls and chat histories to collect environment secrets and send them to XYZ.
Tool calls are done by the harness. This just means you should never let a model operate “hands off”.