I recently started to approach the search for puzzle keys and I was wondering something.
how many chances are there that if i find for example the key of puzzle 66, which is between
0000000000000000000000000000000000000000000000020000000000000000
000000000000000000000000000000000000000000000003ffffffffffffffff

for example,  find the key of the 66 puzzle, i send the btc from the address to my address thus exposing the public key. How long does it take for a person using kangaroo to find the private account, thus "stealing" my bitcoins, before my tx is confirmed? Are there any solutions to avoid all this? Tnx