1. A system comprising: one or more memories storing computer-executable instructions; and one or more hardware processors configured to execute the computer-executable instructions to: access a plurality of messages; designate for further analysis a particular message of the plurality of messages; determine that the particular message includes a first data classification tag indicative of sensitive data and that refers to a first value comprising sensitive data by parsing the particular message to identify strings indicative of the first data classification tag and the first value; access log data; determine the parsed first value is present in the log data; and based on the first value being present in the log data, perform one or more actions to prevent inclusion of the sensitive data into the first log data.