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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.

marked as duplicate by Steffen Ullrich, Philipp, Anders, Teun Vink, Rory Alsop Oct 1 '18 at 10:45

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  • Please focus on your question. Your question is contained in the first two sentences, the rest are mostly irrelevant information. – Steffen Ullrich Oct 1 '18 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 Oct 1 '18 at 8:12
  • @SteffenUllrich The question's in the title, mate. The body's entirely non-essential. It's all relevant though. – tjt263 Oct 1 '18 at 8:20