There are 2 big problems: - Data is destroyed - Data is abused (somebody uses it against you in some way) Disaster destroys, theft & ransomware destroys and/

There are 2 big problems: - Data is destroyed - Data is abused (somebody uses it against you in some way) Disaster destroys, theft & ransomware destroys and/or abuses your data Security against "abusing your data" is afaik: encrypting your data, using different passwords, never trust a link in an email (allways use the links you commonly use). BUT: this is difficult and unlikely done even by a average user. Security against losing data is: backup or sync : backup is done best to my knowledge in apple devices. it also features sync. othervise i'd recommend dropbox, it can also recover some of the data you accidentially delete. printing things is also still a good backup of important data