Computer engineers and programmers have long relied on reverse engineering as a way to copy the functionality of a computer program without copying that program’s copyright-protected code directly.

The danger in the code came from characters that are invisible to the human eye. In early March researchers at several security firms examined what looked like empty space and found hidden Unicode ...

Several times in the last couple of decades, Microsoft has released source code for the original MS-DOS operating system that kicked off its decades-long dominance of consumer PCs. This week, the ...