>This data leak looks like the work of a misinformation campaign. The very first thing this article says is the data is from a cyberattack on European Medicines Agency (EMA), and the data was sent anonymously to journalists

What exactly of the above makes this a "misinformation campaign" (a term so vague as to be misinformation itself)? Nowhere in what you say above says the data are falsified or wrong.

Hackers have leaked data from organizations almost as long as there were computers - and giving them to journalists and/or posting them just as often. People also did it before computers.

The difference being that then we saluted getting access to raw data, whereas now we are being conditioned to consider them "misinformation".