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What many people don't realize is that right now, as you're reading this, you're probably using radio. Either wifi or 4G cellphone. Seems like an obvious statem
by mmaunder 10y ago
What many people don't realize is that right now, as you're reading this, you're probably using radio. Either wifi or 4G cellphone. Seems like an obvious statement, but RF engineers have done such a great job at making IP over the air reliable with 802.11X and 4G/LTE that we can forget about the fact that we're using it.
The problem with this though is security. We tend to focus as security engineers too much on stuff riding on top of IP and forget about the underlying layer 1 protocols. And so that's for me what makes radio really interesting - especially dark corners that haven't been looked at for some time because they've been forgotten about.
- cortesoft 10y agoNope, good old CAT6 for me ;)
- TickleSteve 10y ago...which also broadcasts RF. ...and can be quite easily sniffed with the right equipment.
- comboy 10y agoIf you have proper security on a higher abstraction layer you don't care at all how the data gets transmitted, who can listen to it or modify it.
- jonah 10y agoNote that on the Amateur frequencies, it's illegal to "Obfuscate" your transmissions. You can't even use coded language.
- comboy 10y agoDidn't know that. Surely some people tried steganography? Or is there too much noise to try something like that? (and thanks for the antenna book recommendation)
- mmaunder 10y agoDepends on what you're trying to protect. Seeing encrypted traffic flows at Tor entry and exit nodes for example can expose identity. Being able to monitor encrypted traffic on the wire or air can yield other useful and potentially compromising metadata.