As with many and most programs, applications and utilities available, there are many people who refuse to pay for them and find ways to hack, crack and patch the warez that they download. There are numerous pirate sites that post programs, complete with key generators and working serial numbers. Windows is the most hacked program on the planet as Microsoft is the most hated company,on the planet and for obvious reasons. People refuse to pay for a bug farm with Bill Gates at the cash register.
It's also apparent that people enjoy finding ways to bypass software registrations, just for the fun of it, then posting their finds on the pirate sites. Mailwasher Pro is such a program that has been cracked and working serial numbers created and posted all over the 'Net.

It's a never ending process that hurts software developers and companies.