What are the security implications of sharing a MAC address online? How important is it really, to redact this information; and why?

I see it a lot, and I'm in the habit of doing it myself.

1. Censored images
Redacted and obscured images, PDFs, diagrams, blurred & pixelated screenshots & photographs.

2. Obfuscated plaintext
I've obfuscated individual characters with arbitrary symbols, like #, *, , , ?, x, -, _, ., etc.

3. Masked plaintext
I've masked them with functional, yet obvious substitutes, like FF:FF:FF:FF:FF:FF & A1:B2:C3:D4:E5:F6. And some not so obvious, randomly generated, hex-encoded, colon delimited, binary octets.

  • Please focus on your question. Your question is contained in the first two sentences, the rest are mostly irrelevant information. Commented Oct 1, 2018 at 8:01
  • The script is nice and handy, but it isn't needed for the question. So I took the liberty of removing it. If you need the code, it is still available in the edit history.
    – Anders
    Commented Oct 1, 2018 at 8:12
  • @SteffenUllrich The question's in the title, mate. The body's entirely non-essential. It's all relevant though.
    – voices
    Commented Oct 1, 2018 at 8:20