I think it can be safe to play in online casinos, but it really depends on how careful you are with your choices. I usually check basic things like licenses, how long the site has been around and whether other players have had payout issues. A lot of people forget to test customer support before depositing, but that actually tells you a lot. I also use a few
online casino selection tricks that friends shared with me, mostly about spotting weird terms in the rules. Nothing is risk free, but if you stay alert it feels a lot more comfortable.