I'm not aware of any such devices? I believe you have that backwards - many (most?) devices support HDCP, a form of DRM (and thus legally protected against reverse engineering by the DMCA). This is supposedly to prevent you from pirating (ie copying) otherwise legally purchased content.

In other words, the claimed motivation is to prevent you from running off a copy of whatever you happen to be streaming from Netflix. In reality though it doesn't seem to be very effective, leaving me wondering why so much time and effort is invested in it.