How would you make vampires more dangerous?

In my current project I am currently trying to make a sort of secret battle between humanity and the supernatural. One of the main factions that most of the protagonists would encounter is the vampires of the world, which I know is cliche but with how easy they are to interpret and how they're one of the few that blend into civilization pretty well (other than mages and potentially demons) I'm kind of wondering how to make them feel more dangerous beyond just the super human capabilities, since I left that up more to the werewolves and hags of my world.