Z:gnu-www-ja-google-engineering-talk--b1a5b4-But they don't have to stop at/en

But they don't have to stop at doing this to published data. They could do it to your data too. Imagine if treacherous computing is common in 10 years and Microsoft decides to come out with a new version of Word format that uses treacherous computing to encrypt your data. Then it would be impossible to write free software to read word files. Microsoft is trying every possible method to prevent us from having free software to read Word files. First, they switched to a secret Word format, so people had to try to figure out the format. Well, we more or less have figured it out. There are free programs that will read most Word files (not all).