Could a malicious attacker subvert the Bitcoin network by failing to create a block?
The other miners will not be aware that this malicious miner has find the correct hash(win) since he has not propagate it, so they will still try to find the correct hash and some second later one of them will find it correct and propagate it, then cycle will repeat again without anyone knowing that this malicious miner has win second before the one that has officially win it.