Never hardcode credentials in .upd files. Use environment variables or external configs. Also, avoid storing raw SQL containing PII (personally identifiable information) in update scripts.

Database administrators often script automated backups that dump database content into a .sql file and then compress it to save space.

Understanding Index of databasesqlzip1 upd: Guide to SQL Database Backups and Updates

Use time-restricted, automated deletion scripts to clean up temporary update files after deployment. Conclusion

The researcher disclosed responsibly. The company patched the leak within 48 hours, but not before an automated scanner had already exfiltrated the config file. The breach led to a full credential rotation and a $50,000 GDPR fine for "failure to implement appropriate technical measures."