Apparently hackers have got into iPhones 6 S and higher, Macs and iPads. They can take over your phone and computers as urged to do the update. The hackers can get control of your browser and well as financial information. That came out last week. They urge you do the update.
Tic Toc app also, has a privacy breach. Any site you click on their site and buy or pay for something they can see any financial information you put in.