Take security by obscurity to the next level (this is a bad idea, don't really use this please)

Respond to pings before they even arrive at the server

echo -n "hello world" > /dev/mkov (This is obscure)

Hashidable uses hashids to obfuscate Laravel route ids.

Polynomial Audio Codec, I honestly can't believe this even slightly works

A command-line C program that hides / reveals messages in Bitmap images (BMP) using steganography

Source of the New Tab Traffic Randomizer Chrome extension

Python based steganography examples.

A Drupal module to handle an obscurity prefix for JSON:API requests.

Obscurity Official Feedback Tracker.

Phatening Phishers. . . just their database with bogus data. Protect those who mistakenly entered personal data.