Johannes Bechberger • 2/13/2026

Redacting Sensitive Data from Java Flight Recorder Files

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This technical article details the creation of 'jfr-redact', an experimental tool for removing sensitive information from Java Flight Recorder (JFR) files and hs_err logs. It explains the need for redaction, compares the tool to the existing 'jfr scrub' command, and provides code examples for filtering events and properties to secure data like environment variables, tokens, and internal hostnames.

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#security #profiling #Openjdk
Redacting Sensitive Data from Java Flight Recorder Files

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