Avoid logging sensitive content

Be cautious about what data gets included in log messages to prevent security risks and performance issues. Before logging file contents or user data, consider whether it could contain:

• Binary data (images, PDFs, executables)
• Personally identifiable information (PII)
• Extremely large content that could overwhelm logs or consume excessive memory
• Sensitive configuration or authentication data

Instead of logging full content, log metadata like file names, sizes, types, or character counts. Use appropriate log levels - consolidate related error information into a single error log rather than splitting across multiple log statements.

Example of what to avoid:

# Bad - logs potentially sensitive/large content
file_content = file_system.read_file(file_name)
logger.info(f'Read file contents: {file_content}')

# Bad - splits error information
logger.info("error during llm invocation")
logger.error(e)

Example of better approach:

# Good - logs metadata only
file_content = file_system.read_file(file_name)
logger.info(f'Read file {file_name} ({len(file_content)} characters)')

# Good - consolidated error logging
logger.error(f"Error during LLM invocation: {e}")