So both raided were because Bithumb hosted a scam ICO and people who bought in are complaining that they lost money on it? I'm afraid I have little sympathy for exchanges which list vaporware to make themselves money, and I also have little sympathy for people who are still buying in to ICOs when it has been proven time and again that 99.9% of them are outright scams.
If an exchange hosting an ICO which turns out to be a scam is enough to bring charges against a CEO, then there are a lot of exchanges which need to quickly reexamine their business practices.
Which exchanges are safe according to you?
None of them. I'm not aware of a single exchange operating today which hasn't either been hacked, scammed their customers, or sold their customers' data. The less you use centralized exchanges, the better.