Are SD Cards Subject to Vulnerability Similar to USB?

[jbreher]

I wonder how hard it would be to write my own airgap audio transmission program to send transactions between computers.

Back in the good ol' Trash80 & TI 99/4A days, storage was done not on USB, nor HDD, nor even floppy. We used FSK (frequency shift keying) to encode our ones and zeros as audio tones, and stored it on analog cassette. And we _liked_ it.



No reason you couldn't use FSK across the speaker/mic interface.

Now get off my lawn! Damn juvenile delinquents....

[Razick]

I wonder how hard it would be to write my own airgap audio transmission program to send transactions between computers.

Back in the good ol' Trash80 & TI 99/4A days, storage was done not on USB, nor HDD, nor even floppy. We used FSK (frequency shift keying) to encode our ones and zeros as audio tones, and stored it on analog cassette. And we _liked_ it.



No reason you couldn't use FSK across the speaker/mic interface.

Now get off my lawn! Damn juvenile delinquents....

I'll have to look into that. I think I'll sit here on the corner of your lawn for now.

[sandykho47]

SD card too 

1. i think malware can infect firmware and keep wallet.dat files
2. how about archive & encrypt wallet with RSA-4096 & very difficult password 

Thanks everyone, I think you've answered my question and given me some ideas. I like the airgap idea... I wonder how hard it would be to write my own airgap audio transmission program to send transactions between computers. It could easily be put in send-only mode so that the transaction could be sent, but nothing returned to the offline computer.

don't forget this: http://www.welivesecurity.com/2014/01/15/secret-radio-technology-allowed-nsa-to-spy-on-pcs-disconnected-from-the-internet/

i think it's impossible avoid airgap from anyone

[Kprawn]

Yea.. I posted the article. 

Goto ---> http://arstechnica.com/security/2014/07/this-thumbdrive-hacks-computers-badusb-exploit-makes-devices-turn-evil/

If the SD card has firmware, it would be vulnerable to manipulation by a skilled hacker. 

Hope the link answer your question.