Netflix is clamping down on users accessing the service through a VPN (virtual private networks), with its updated terms of service threatening to “terminate or restrict your use of our service, without compensation or notice”.
VPNs are used for a variety of reasons, but, with regards to Netflix, usually to combat limited download speeds and access content restricted to other territories.
The new, key clauses read:
You may view a movie or TV show through the Netflix service primarily within the country in which you have established your account and only in geographic locations where we offer our service and have licensed such movie or TV show. The content that may be available to watch will vary by geographic location. Netflix will use technologies to verify your geographic location.