When a new image appears in the parent directory, a better system does not just list it—it notifies you.

If public, use a Content Delivery Network (CDN) to serve images faster.

Ensure autoindex off; is set in your configuration file. 2. Move Images Outside the Web Root

if __name__ == '__main__': app.run(debug=True)

: Sensitive information—such as backup files ( .bak ), configuration files ( .env ), or private photos—is often inadvertently exposed due to misconfiguration.

Accessing these directories is not "hacking" in the traditional sense (the door is open), but downloading personal files belonging to others may violate privacy laws and Terms of Service.