cyber in case of :
-misconfiguration,
-bug,
-Api vulnerabitlities if you are using it,
-Phishing , social engineering,
-server, service vulnerabilities....
Whenever there are problems like this we've posted about it. We haven't been robbed. We don't store email addresses in plaintext associated with accounts (we hash them). We haven't had accounts robbed to our knowledge.
The biggest problem like this that we've had is a rewards bug that overpaid people: #217122
The DoS stuff was posted about too but I don't have the time to find it.