Where can I play Ark for free?

I'm curious, could you please tell me where exactly one might find the opportunity to play Ark, the popular game, without having to spend any money? Are there any specific websites, platforms, or promotions that offer Ark as a free-to-play option? I'm particularly interested in legitimate sources that won't compromise my security or involve any hidden costs. It would be greatly appreciated if you could point me in the right direction.