I would say two-factor authorization, and using a service that requires a code to be sent through telegram in order to authorize any transactions. I'm sorry your friend lost all that money, I could only imagine how that must have felt like! This opens up a market for BTC Insurance, just a thought!
Also phones have evolved enormously lately. The iPhone x can destroy most desktops from 2011 when it comes to its raw power. Not to mention its single-core benchmark score can destroy most RIGHT NOW.
I don't think It's worth it. In fact, you're paying a lot for "just in case" equipment is damaged. I believe you should just buy crypto and wait it out, and it should rise in value
Social media management is crucial to your business' success, since most people use social media in order to explore new companies and learn about their services. I definitely advice you to find a company that knows what their doing, and your business should have a much higher chancee of taking off ...
I'm not the most high tech miner. I have a farm with a GTX 950, and an I3. I mine Zcash on nano pool, and with the price of electricity around here, I'm making a few pennies. 1.5 bucks a day ^^