They usually give you info like size of company, stage of company and general business area the company is in, which is usually enough to know if you want to se

They usually give you info like size of company, stage of company and general business area the company is in, which is usually enough to know if you want to set up a 15 min call with the recruiter and ask more details like the company name so you can look it up and see for yourself what they do. I've had calls with recruiters; during the call, I told them "that's not something I'm looking for and thanks for your time" and moved on. I've also had multiple late-stage interviews that started this way and my current job was found this way.