I’ve a query about handle reuse. Admittedly, I am a little bit confused on the matter, so please bear with me if the framing of my query does not make a lot sense.
Lately I began utilizing Sparrow Pockets and Coldcard (beforehand I used to be utilizing a Nano X and Ledger Reside) and seen I would been reusing receiving addresses in batches of two, at all times one after one other throughout the span of some hours or a couple of days. After some pondering, I noticed that these have been my withdrawals from the Fold rewards card. Though my pockets was creating new receiving addresses every time it detected one had been used, there was, after all, no method for it to detect I used to be copying and pasting the handle over to Fold, therefore the reuse.
I perceive that this has compromised my privateness considerably, which is a disgrace, however not a serious concern.
The key concern I’ve is {that a} potential safety vulnerability has now been uncovered. I am unable to declare to know this very effectively, however I do know it has one thing to do with ECDSA, and if ECDSA is ever cracked sooner or later, my cash might be susceptible.
Nonetheless, I’ve solely ever reused receiving addresses. I’ve by no means spent from the identical handle greater than as soon as, so does that exclude me from that concern?
If it is nonetheless a priority, what’s the most effective recourse? Creating a wholly new seedphrase and transferring the funds over? Coinjoining?
Once more, I am not notably effectively versed in all of this, so please clarify to me like I am 5.