Thanks Alric and melanieb, you both make pretty good points. Unless the article/book is only published on the web (which I'm guessing it's not very common) people can't accuse me of anything, since I can simply say I got it from a colleague.

The thing will be if any colleague asks me for the article/book in question for their own purposes, but I guess they won't care where it came from, as long as they can access the information. Yup, now it makes sense, I was overreacting