Improper handling of alternate encoding occurs when Elastic Defend on Windows systems attempts to scan a file or process encoded as a multibyte character. This leads to an uncaught exception causing Elastic Defend to crash which in turn will prevent it from quarantining the file and/or killing the process.
https://discuss.elastic.co/t/elastic-defend-8-13-3-security-update-esa-2024-24/373441