Afaik wasn't the issue with Galxe a socially engineered hack? What's to say the same couldn't happen to other companies? It isn't anything new to say that there is no perfect security out there, all systems can inevitably be breached so why not just use a damn hardware wallet if you really wanted security. It secures both your privacy and security in most cases unless you got robbed of both of your keys and your wallet though. In choosing amongst those exchanges that can inevitably be hacked though, it's kind of hard to determine which is safer than the other but I'd just go for the most reputable for the majority of my transactions. As for trying out new stuff, well, it'd only stay on the "trying part" until further notice.