By now you’ve heard about the Facebook privacy breach in which certain apps had been transmitting user IDs to advertising and Internet-tracking companies. And by now you’ve probably heard that the cochairmen of the House Bipartisan Privacy Caucus have some questions for Facebook about said privacy breach.

In essence, though, for those of you who missed it:

…the 10 most popular applications on Facebook transmitted users’ IDs to outside companies. Advertisers and other companies could then use such information to build databases on the users and target advertisements to them or sell that information to a third party.

Even careful Facebook users who restricted access to their accounts were affected if they used these apps. It is unclear how long the problem has existed.

Got it? Good.