I am concerned that quantum computing could potentially brute-force all existing wallets. However, I am unsure whether internet connection speed would impose a limitation on such attacks. If not, how will the Bitcoin community protect itself against this threat? Additionally, how can I contribute, follow existing projects working on this issue, or learn more about this topic?
It has been discussed multiple times here in this forum. But just know one thing, quantum computing is a distant dream. An actual quantum computer will cost billions of dollars to make and operate. So none from our generation will be able to see an actual working prototype of a quantum computer, let alone breaking open Bitcoin.
Even NVIDIA CEO mentioned that it will take another 15-30 years to make an actually useful quantum computer. So chill!