If there's a mic, a camera, you're on the internet, or other people are within earshot... Communication is susceptible to interception.

Use weird obfuscation techniques.

Do it all the time. People will think you're nuts, but who cares? YOLO!

At the end of the day, nothing is safe or sacred. Security is an illusion and you can have every safeguard in place that you think will help - but nothing beats word association or replacement tactics/obfuscation/steganography/symbolism etc...

If you can't send a message to someone right in front of someone else - without the 3rd party catching it - then... Sorry.

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