Ninjastic
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Re: Hacking
by
RealBitcoin
on 12/02/2016, 01:04:13 UTC
Quote from: Amph on February 09, 2016, 08:32:52 AM
Quote from: RealBitcoin on February 06, 2016, 06:48:09 PM
Quote from: shorena on February 06, 2016, 06:46:02 PM
Quote from: RealBitcoin on February 06, 2016, 04:00:38 PM
Quote from: shorena on February 05, 2016, 05:39:44 PM
Quote from: RealBitcoin on February 05, 2016, 01:55:57 PM
-snip-
I see, well, dont print out sensitive info with 3rd party printers ever.

There are many shops that offer printing services, but one has to be a fool to print out sentitive data with them.

Only use your own printer (not even your neighbors) to print out sensitive data.

I agree, but I think thats where the fear printers might store the data comes from. If someone uses a printer at home and think it might still have sensetive data on it, they could just destroy the printer once its lifetime ended. I also doubt home use printers will have hard disks as they have next to no need to store a large amount of data and it would only increase the price per device.

You can always check the vendor's site and see what specs the printer have, my printer only has a cache that clears every poweroff (worse case scenario after 2 printings).

So if 1 print out a password, I can then print out a photo aftewards and the cache is overwritten.

I`m not sure why any other printer has hard disks, it has no sense, you can just store the config of the printer on your OS with the printing software that you got with the printer. No need to put separate harddisk in the printer itself.

Its very insecure architecture then,

Im talking about something like this

---
they will store large amounts data and transfer (or recieve them) over a network connection. Sometimes from several users at once and significantly over 100 pages. A harddisk is just a cheap way to store that data. Due to the nature of harddisks the data is available from a long time after it was needed last (unless overwritten).

So its a network printer, well that is absolutely not good, and not secure.

That is a huge and direct attack vector, and possible exploits could exist, where hackers could grab your printers cache and send it to them via internet.

Nope, dont use that folks.

well none is using somethign like that for papaer wallet, we use something more personal more small, like any small canon printer or epson

as long as it's for personal usage, i don't see the issue with the memory cache

If you use electrum, with seed as a password , which is a passphrase made up of 13 random words.

Then all you need is a pen and paper, or memorize it. It's easy to write down words.

But if the private key is just random characters, then its bad, that needs to be printed out, to avoid misspelling which could cost you your savings.