I've worked as a software engineer for over 12 years at over half a dozen companies, with codebases numbering in the millions of lines of code and I have yet to see any software or code I could imagine anyone would want to steal. And if you really needed some code, I'm sure it's available somewhere as open source. And wouldn't the open source code be much more preferable? rather than ripping out some piece of "stolen" code that was never meant to serve other purposes.