“If you’ve got nothing to hide, you’ve got nothing to fear.” I HATE that saying.
A much better rebuttal:
“Give me six lines written by the hand of the most honest man, I’ll find enough to hang him.” – Bruce Schneier.
Whatever you do, say, have done, may have been associated with – a motivated and skilled attackers will find a way to use even the most positive, wholesome information about you against you, whether it be by prosecution, blackmail, extortion, or throwing you to spin out on the rumour mill.
WOuld you had over you credit card details to a stranger? Would you allow them to rig your home with video cameras livestreaming to the world 24/7?
What about those personal messages where somebody told you something in confidence? That is a major reason I do not allow people to use my phone. I’m not just protecting me, I’m protecting a lot of people.
Some people do not understand that basic fact. I had two young Constables turn up one day for a chat; long story short, a woman with a serious habit of self-destruction had clearly shared her phone around, lost it, showed a photo to a “trusted” friend, or simply had her phone “hacked”, and because of that, because she couldn’t take care of her own property, she lashed out. When the photographs of the other party (you can probably guess who) surface, well, I will know it will be her, intentional or not. Recklessness can still cause an action or inaction to become a crime.
Any material that myself and Special Technology Services handle is encrypted with 256-bit AES encryption, at the bare minimum.