https://protos.com/spanish-police-rescue-crypto-investor-kidnapped-on-holiday/
The first thing that came to my mind after reading this was that one should not talk about his crypto investments with strangers or friends as it can pose various risks. If you are active on forums like bitcointalk and involved in trades, you should not give information which can help others relate to your identity.
It is not new thing that people may not be happy with someone achievements and discussing that with many people may put someone that risk.i see nothing bad in telling your close and few people about a great thing you are doing but all I know is that don't brag of what you worth especially in term of cryptocurrency telling them what you worth in your wallets, is never a good idea because that is main reason why many people are target. I believe if people don't know your worth it will be hardly you been target.
This brings to mind a post I read about a man who won a sizable sum of money in a bet; at first, no one paid him any attention, even he bought a car; nevertheless, the day he revealed his winnings amount, he was attacked.So let's simply be careful while bragging about our value and bragging about our accomplishments.