2.5B is a whole lot of money lost, but we have to consider that bybit exchange lost $1.5B of that and Cetus exchange lost $220m, so if these services had invested in their security, then the losses would surely not have been this high. So as people learn to secure their funds from scammers, they should obviously not store it in any third party service, because they could easily lose it there, not your keys, not your coins.