Crypto.com - The safest exchange?

Context: My brother was called out the blue, foolishly he did what we all laugh at others for doing. We've established he's a Grade A idiot and he's highly embarrassed. But that's not what this is about. So, please just spare the insults, that's my job.

Feel free to ask questions if you like, but I'll just keep this short.

Once the dipstick had transferred all £12,000 into his CDC account and gave them full access, they went to town on converting it and then transferring it to an external wallet.

CDC's algorithm flagged this, cancelled both orders and froze his account. Within 24 hours, he has his account back.

Now, from talking to others, they believe if this was any other exchange then the money would have been gone.

I'm inclined to agree.

Has anyone else heard of or experienced similar with a different exchange? If so, please sing their praises.

Whilst CDC gets a lot of bad press, if they have this kind of infrastructure in place, I'd say they're a good exchange to recommend to newbies.