Earlier quoted context omitted.
This is always the game theory of ransoms, and it is a classic example of a collective action problem (and is a form of a prisoner's dilemma). Each individual company is probably better off paying the ransom, but everyone would be better off if no one paid a ransom. This is why the United States, for example, has an official no-ransom policy, and why other no-ransom policies exist. You have to have something forcing…
There’s a similar dynamic from within the hacker group itself. For the ransom group, it is better for them to be perceived as trustworthy. Pay the ransom and we won’t leak your data. For any individual within the ransom group, they can get a big payout by selling the data.
Messages between students and instructors? Likely pretty boring, but possibly embarassing or confidential for a given individual.
Grades? Could be a FERPA violation.
Critical PII such as SSNs? Probably not in the LMS to begin with.