Q: A computer technician or a friend offered to add to my computer unlicensed versions of programs that he has. Is it permitted?

A: Selling unlicensed versions is prohibited for a variety of reasons, including: geneivah (theft), benefitting unfairly from another's toil, hasagas gevul (encroachment), dina d'malchusa (law of the land), and minhag hamedina (common commercial practice). Thus, you are prohibited to purchase the unlicensed copy from him, just as you are prohibited to purchase from a thief, because this encourages him to continue stealing and is also a violation of lifnei iver and/or mesayei'a lidei ovrei aveirah. (C.M. 356:1; 369:1)

Even if the technician offers to install it for free, it is still prohibited, since he gains by selling you the computer or by charging for his time and labor. Asking a friend to install an unlicensed copy is similarly not allowed, since you are encouraging him to violate his licensing agreement. Moreover, even if a friend gives you an unlicensed copy of his own accord, by receiving it you are giving him verbal encouragement to violate, which is prohibited. (Magen Avraham 347:4) 

 (Emek Hamishpat, Zechuyos Yotzrim, Intro. 35:5-9; ch. 40:23-40)