Hackers are everywhere and believe me we have seen huge threads about the people who has been victim of these people. Some said their private keys were stolen, some had their tokens stolen and they did not even know about it after they got into their wallets, or there had been big cases where the exchanger itself got hacked billions of worth tokens were stolen.
So yeah they are there and they are using the crypto hacks for their own benefits. Once you start reading by you will come to various cases who got victimised with hacks. Keep all safety measures with you like storing the privates keys safely, watching out for the phishing attempts and much more.