If you think it matters where the data is stored (which shouldn't matter because it should be client side encrypted), running your own server would also be a risk. Because you cannot possibly have the same resources to monitor your server/router for suspicious activity...
If you think it matters where the data is stored (which shouldn't matter because it should be client side encrypted), running your own server would also be a risk. Because you cannot possibly have the same resources to monitor your server/router for suspicious activity...