I never download stuff except from the Apple app store, so I'm probably not a victim, but about class-action lawsuits - my former boss switched us all (about 9 of us) to newer Mac towers several years ago. He bought an apple display for each computer, and they turned out to be crappy monitors and we had to have two of them repaired right away. I think maybe one of them never worked and we got a replacement.
About a year and a half later, I started getting checks in the mail. I think I got 9 checks total (one for each monitor), but so many of those things were sold that each check was for something like a buck fifty. Apparently we got enrolled in a class-action suit over faulty monitors, although most of them were ok, in fact one of them is still in my office at work even though I had to switch to a Windows laptop several years ago. (That said, I miss my work Mac. I hate Windows. I'm typing this on my personal Mac book.)
Good that people at least watch out for the "little guy" but you don't get much money from a class-action suit.
I also paid all the bills at work, including my boss' company American Express card. One day, I finally asked him about a 9 dollar charge that had been on there forever for a particular internet service. I knew he had switched the service at home (which got charged to this card), but I didn't know exactly when. Turns out, he had cancelled that service like 3 years before, so that's 9 bucks a month over three years at least that he had gotten charged for something he didn't have. Took a couple of months to get American Express to take it off his bill, but apparently that's a common practice of the Russian mob. They figure out how to put a small charge on a large bill and people don't notice it for a long time. How many other people were paying out that 9.00 a month before they caught on?