Should you be concerned? Yes, absolutely.<p>Just don't do it, period. And forget the whole idea, please.<p>Back a few decades ago, when resources were 1000x as expensive as they are now, one might have entertained the thought of using one's work computer for personal and/or side business projects on the sly (and a great many people did, in fact). Resources at any significant scale, or desktop setups for visualization of any kind (even just high-res images -- forget about video!) were basically unobtainable for regular people. Compilers, IDEs, documentation -- that used to all cost serious money (and shelf space).<p>But these days? Your laptop (which would blow away anything in existence 20 years ago) costs as much as a moderately expensive car repair. And hosting + computational resources are as cheap as water. Languages are so powerful that your main challenge isn't creating stuff -- it's creating in away that's maintainable for your, and understandable to others.<p>So aside from the ethical aspects of mooching off one's employer, there's just no upside to it. In fact you might want to ask yourself why you're even thinking of this route -- are you, internally, basically expecting to fail? Do you really think you can't bootstrap yourself through this project, like many thousands of others like you (including many far less skilled) -- in this, the very dawn of the age of ubiquitous, nearly zero-cost computing?