[gorbachev]

Hacking is not the most likely negative scenario. Your data is already in multiple hacked databases, anyway. You've already lost that fight. Even if Glassdoor gets hacked, the information they already have on you (email, place of employment) is enough to deanonymize you when combined with other hacked databases.

The most likely negative scenario is that it'll now be much easier for companies to uncover identities of people posting reviews about them on Glassdoor. HR inviting you for a "chat" due to a negative interview is what I'd be concerned about. As another commenter said already, this is phenomenally stupid from Glassdoor, because they're losing the remaining little trust people had on them for keeping their users anonymous.