1.What is the best and secure linux distro for having my offline savings cold storage electrum wallet?
2.How to install Electrum offline in that linux distro because i have read on linux we need to get connected to internet and run some commands to install it but i would like to install it offline without internet access.is that possible?if yes,how?
3.Does the signed transactions file from offline electrum wallet transferred to online wallet can possibly leak my private keys?
I look forward if some techy here answers and explain the answers in details.
Thank you
I think Tails is one of the most secure Linux distro evers, at least Edward Snowden uses it. Tails includes Electrum installed ready to use. What I don't understand is how does it store the keys because Tails is read-only (you can't write anything on it as far as I know unless configure it).
I think you will need a Trezor to securely store the private keys..
Anyway im also interested on a more specific answer.
Tails was made to protection your privacy, I dont think this is OPs primary concern.
#1 Any distro you can handle and does not come with crap. Arch and Gentoo allow you the biggest control, but they are also more difficult to handle. I personally dont think it matters much as long as the system is kept offline reliably. E.g. if you can disable the WiFi via a hardware switch or if there is no WiFi module at all.
#2 An offline system is not called offline because it was never online. You almost always need data from an online source. The important part is to only generate your keys (e.g. the electrum seed) once you are done with the online part, then you go offline and never bring the system back online again. If you have to update software, e.g. because your old wallet version is no longer working you might want to create a new wallet and sweep all funds once you are done.
#3 Yes, but only if the wallet software or the system PRNG is horribly broken (R-value reused).
