Should I recreate a cold private key or my security was actually not too much compromised ?
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Are you familiar with how some people lose their money even though it is stored in a cold wallet, and they claim they never store their private key online or something similar? I think you have a bigger risk compared to them, which for all we know probably make the same mistake as you did and simply forget them.

I remember julerz losing his campaign funds because his 'cold storage' was compromised and he needed to repay quite a huge sum. I don't think you want to experience the same thing, so you just do what others tell you.