Z:gnu-www-ja-free-digital-society--a37ce9-Anyway, malicious features are/en

Anyway, malicious features are present in the most widely used nonfree programs, but they are rare in free software, because with free software the users have control. They can read the source code and they can change it. So, if there were a malicious feature, somebody would sooner or later spot it and fix it. This means that somebody who is considering introducing a malicious feature does not find it so tempting, because he knows he might get away with it for a while but somebody will spot it, will fix it, and everybody will loose trust in the perpetrator. It's not so tempting when you know you're going to fail. And that's why we find that malicious features are rare in free software, and common in proprietary software.