There isn't much actually 
The only real cloud mining I've heard were Hashnest and that's it
Hashnest is a trustworthy company and I already put few GH/s there so I can confirm that
Besides, They were the one who made Antminer
So, u heard of a cloud mining, invested in it and learnt that they built a miner, makes it a trustworthy cloud mining company?The only real cloud mining I've heard were Hashnest and that's it
Hashnest is a trustworthy company and I already put few GH/s there so I can confirm that
Besides, They were the one who made Antminer
Besides, most of the cloud mining are safe at first because they are still baiting for more users to come in, when they have enough they just need to act like they've been DDoSed or Hacked
It happens to most of the Cloud Mining
Do u even understand that by this statement, u r promoting the act of running Ponzi?It happens to most of the Cloud Mining