The Irish Data Protection Commission (DPC) has fined Meta €91 million for a 2019 incident wherein the company stored millions of Facebook and Instagram passwords in plain text.
Also, nobody reads the actual posts, just the headlines. They were accidentally stored in logs:
As part of a security review in 2019, we found that a subset of FB users’ passwords were temporarily logged in a readable format within our internal data systems,
which is something I’ve seen at other companies too. For example, if you have error logging that logs the entire HTTP request when an error happens, but forget to filter out sensitive fields.
Not to excuse them, but this is from 2019. Yes, that behavior was so outrageous at the time, but hopefully it is no longer happening
Also, nobody reads the actual posts, just the headlines. They were accidentally stored in logs:
which is something I’ve seen at other companies too. For example, if you have error logging that logs the entire HTTP request when an error happens, but forget to filter out sensitive fields.