<human>: Can you condense the text into three sentences or less?

Long story short, i wanted to some special photo manipulation and try some software before i even considered buying it, that software had a watermark which render the photo useless to see if it was worth it. In order to try it, i got a privated version, installed it and it removed some files which made me loose time (money and some work). 

After some debug, it can clearly see, it's the makers of the software that infected the software (they clearly say it & they brag about it). Which leads to ask myself, is it legal? I can't understand third-parties adding malware/spyware but the orginal makers?
<bot>: Is it legal for software compagnies to release pirated version of their software that destroys/harms your pc?