CompTIA certainly used to care about braindumps. They would go crazy about it.
But today, there are websites that give away braindump PDFs for free. These sites have been around for years. Out of curiosity, I did a whois on such a website. To my surprise, the domain information is not even hidden. The full address, and phone number, is given, and it's in the USA. These braindump PDFs are also sold on ebay for $5. Other websites post the QnA online and allow you take a practice exam. If you can remember about 5 exact words, in sequence, from a CompTIA exam you took recently, google it, I'll bet you find the QnA online.
It is my understanding that Sybex practice exam books give exact questions, exact answers, and full explanations to the questions that are on the exam.
I studied hard for my certs. Now CompTIA seems unconcerned with braindumps being distributed everywhere.