Not only cyber criminial but people around us that has an ill-intention. We never know whether people around us will change or not once they knew that we have lots of treasure in digital world. They maybe good to us but we all know how greed can change people. There are even cases where a member of the family killing their kin just to get the money by themselves. So it is really important that we keep vigilant and never expose that we are holding that huge amount of Bitcoin or else we might find ourselves in big trouble.
Sometimes the family could be the one that has more ill-intention that all of the cyber criminals you could find out there just because you have something that could potentially make you rich in the long-term. It's like the usual family toxicity culture around the world especially in Asian countries......like mine. You can never trust anyone that easily even the ones that gave birth to you.
This applies not only to the BTT form, but to any forums and discords and telegram chats popular in our time.
Also, many people forget that being in public places, for example, in a subway car or bus, when you look at the screen of your mobile phone, check portfolio or when entering a password, the curious eyes of a neighboring passenger can also look into it. You won't even notice it. And remember that in some countries for urban security there are high resolution monitor through which personal can see what is on your smartphone.
Just join a single Telegram channel that is crypto related and with plenty of members, you would find out plenty of cloud mining scams in your inbox in less than a week. I had moderated some TG chats back in 2020. Even if you don't tell anyone, just because they know that you're part of a crypto community, they'll try to reach out to you and annoy the fuck out of you.