This tip is relevant for government computers that store our complete data. That is, having only an internal network without Internet access is probably the best way to prevent hacking. But for most people who store a lot of data already on their own phone, it is unrealistic. I use a mobile wallet for fast qr pay so I set up fingerprint access plus additional code. If you don't be lazy and take care of your safety, then many problems can be avoided. In addition, new blockchain-based digital data protection systems are being developed.