You are entitled to use the Software for your own personal use, but you are not entitled to: (i) sell, grant a security interest in or transfer reproductions of the Software to other parties in any way, nor to rent, lease or license the Software to others without the prior written consent of Valve, except to the extent expressly permitted elsewhere in this Agreement (including any Subscription Terms or Rules of Use); (ii) host or provide matchmaking services for the Software or emulate or redirect the communication protocols used by Valve in any network feature of the Software, through protocol emulation, tunneling, modifying or adding components to the Software, use of a utility program or any other techniques now known or hereafter developed, for any purpose including, but not limited to network play over the Internet, network play utilizing commercial or non-commercial gaming networks or as part of content aggregation networks, websites or services, without the prior written consent of Valve; or (iii) exploit the Software or any of its parts for any commercial purpose.
Nie tylko po adresie IP można logować komputery, a rejestrując się na steamie sam VAC (podobnie jak PunkBuster) zbiera o komputerze jakieś dane.