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.
I worked at a company that handled sensitive data and we always had to pay special attention to logs in code reviews to make sure someone wasn’t inadvertently logging something that could potentially be private.
There’s sometimes cases people don’t think of ahead of time. For example if you log stack traces, they may contain details about the arguments passed to functions.
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.
I worked at a company that handled sensitive data and we always had to pay special attention to logs in code reviews to make sure someone wasn’t inadvertently logging something that could potentially be private.
There’s sometimes cases people don’t think of ahead of time. For example if you log stack traces, they may contain details about the arguments passed to functions.