is it "possible" yes -- but it's one of those let the machine run for X # years to reverse the key type deals
keep an eye out for any exploits around public keys and be ready to create a new wallet just in case
but otherwise sounds like you've learned your lesson with minimal loss
good luck
Thank you. I only use this MEW wallet for airdrops and then move the coins to my Trezor/MEW wallet, when possible. So, I guess if they can get into this somehow, they wouldn't get too much anyways. I think it might be time to create a new airdrop wallet and move on.