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Independent Developers Fight Piracy & Lose
An anonymous reader writes "The author of the Echelon decided to take his fight against software piracy to the next level and then threw in the towel. After someone began posting new serial numbers on a well known hacking site, the author took matters into his own hands. With version 1.0, entering a hacked serial number causes the software deleted the user's Home directory. Yes, you read it right, the software completely erases it (aka rm -rf ~). A variety of people have voiced some some strong opinions on this. While some argue that piracy is good for established companies, a few large companies are battling piracy and having limited success. Small, independent developers, however, are recognising this is a serious problem and are generally stumped by what to do about it."
Comment removed based on user account deletion
This actually isn't a new idea. I remember an early version of Lotus 1-2-3 (for DOS) that did something like this. If the program thought it had been pirated, it deleted its main .exe files. This forced you to have to re-install it (assuming you were the legal owner), but didn't damage any of your data or other programs.
At the time, they weren't using serial numbers as copy control. The floppy had some kind of copy protection on it (a "diskcopy" wouldn't work), and it wrote some files in the install directory that were marked system and read-only. You couldn't touch these files. If they got moved by a defrag program (for example), the program would zap itself. (I found that out the hard way. It was not mentioned anywhere in the manual.)
Doing this is probably the only legally defendable kind of destructive copy-protection. If the user pirates your software, he has done something illegal. That does not give you the right to do something illegal back to him. If he has no right to run your software in the first place, then there's nothing wrong with your software deleting itself, since he shouldn't have it in the first place.
As with my example above, when implementing destructive copy-protection, you must be very careful to make sure it won't backfire on legitimate users. I did own a legal copy of Lotus 1-2-3, which I had installed from the original disks. I didn't know that allowing the file to be moved by my defragger would cause the program to think it was pirated. Suppose Lotus had decided to delete my data files (no "home directory" on DOS) instead of just the 123 program? Then I would have lost my data even though I was a legitimate owner of the program and I was doing nothing wrong, according to the software manual. As it was, instead of losing my data, I only lost about half an hour of time performing a re-install.