For now, much of this can be avoided by always hanging up if you receive a call from google, apple, etc, and then--if you really thing there's something going o

For now, much of this can be avoided by always hanging up if you receive a call from google, apple, etc, and then--if you really thing there's something going on--contact them via an official way documented on their website. Of course, they try to catch people off-guard as they did Mark Cuban. When I tell my bank or broker if I should get a call that I'm going to hang up and call back on their main number, they always understand and support it.