Today, I added a new point in OP:
[9]
Pay your attention on very early signals of scam exchangesI meant, when one legit exchange starts to turn into a scam one, it usually shows very early signals. They are sort of very strange requirements and abnormal responses to their customers' supports, something like that. When you see it, I believe it is very early signal of highly potential scam exit.
A legit exchange can turn into a scam one in a minute. They can do it instantly if they want (with so many faked, nonsense accuses).
There is a very good example for the point #9: the Crypto Bridge exchage:
https://crypto-bridge.org/I will give you a very brief summary on their scam progress.
1) They required KYCs on US citizens
https://mastersofnodes.com/cryptobridge-applied-kyc-for-us-citizens/https://medium.com/@JimmyMcShill/bypassing-cryptobridge-kyc-a3b3cf22b0f3Fortunately, US citizens allowed 2 weeks to withdraw money from Crypto Bridge (that time) if they don't want to do KYCs. It's good, IMO.
Users who do not agree to the terms of service or verification requirements have 2 weeks to withdraw their funds from the exchange.
2) They required KYCs on all users (not only US citizens) and KYCs (this time) will be verified by a third-party company - Fractal ID.
Crypto-bridge.org KYC scam !It is terrible to see they announced KYC requirements on 1st Oct 2019, then instantly disabled accounts that did not verify with KYCs. Without a transitional period for their users.
This time, it is terrible! You don't verify KYCs, you lose your money!
It is your responsibilty, not Crypto Bridge's.
3) They announced to shut down the exchange:
With great regret, we’re announcing that CryptoBridge is shutting down.
We want to notify our users that we will terminate all services and servers after December 15 23:59 GMT.
All deposits will be closed after December 3 23:59 GMT with withdrawals following after December 15 23:59 GMT.
But at least, to be honest with you, I still respect them because they announced that any social media accounts from now on are faked ones (they closed all their social media accounts). At least, they don't let their customers get scammed by the other scammers. At least, at somewhat extents they still care about their customers. At least they still allow their customers a period of 2 weeks to withdraw money.
UPDATE: 2019-12-02 1pm: Our social media channels are closed, all accounts on Twitter that are pretending to be representing CryptoBridge are fake. We are not planning a comeback at the moment.
In a nutshell, all things have gone with a process, and if you are aware of very early signal (with KYCs on US citizens) and if you are non-US citizens, you had a great chance to withdraw your money in February or March, without KYCs.