Back when a braindump was a 'Brain Dump', they weren't as harmful. Were they illegal? Maybe they were, maybe they weren't. By today's standards, YES they were illegal, but many Certification Vendors hadn't put those standards into place until AFTER the number of thefts was truly visible, hence the reason for the Non-Disclosure Agreements that we are all forced to read today.
Then, in 1995, a company came along that screwed up our entire Certification world. They took braindumping to a new level by mass producing thousands upon thousands of certification questions from multiple certification vendors and selling them to unsuspecting candidates at an unbelievably LOW price.
Braindump users have compromised the IT Industry by reducing the value of certifications. Exam takers without solid IT experience are artificially passing exams to better their chances of employment in the industry. Unfortunately, as they become employed they do not provide companies with competant skill sets. This in turn makes them less valuable and reduces the salary IT workers are paid. Ultimately this makes the hard won certificatons by legitimate test takers with solid skills and experience suffer.
Sadly, many IT jobs have been outsourced to substandard workers at lower wages. To get their foot in the door they use braindumps to achieve certifications. No one wins in this situation. The company suffers and when the company suffers so do the outsourced workers.
Braindumps hurt everyone.