In older analog cable systems, most cable channels were not
encrypted and cable theft was often as easy as plugging a
coaxial cable attached to the user's television into an apartment building's
cable distribution box, which were often unlocked. In some rural areas, non-subscribers would run long cables to distribution boxes on nearby
utility poles.
Set-top boxes were required with some systems, but these were generic, and often in an unknowing violation of contract, former customers would donate them to
thrift stores for sale or retain them indefinitely in storage when they ended their subscription to the service rather than return them to the provider. Other ways of cable theft were using a cable TV
converter box (also known as a descrambler or "black box") to steal all channels and decrypt pay-per-view events, whereas a normal converter would only decrypt the ones paid for by the customer. The cable companies could send an electronic signal, called a "bullet", that would render illegal descramblers inoperative, though some were bulletproof. The boxes also would often be ordered from overseas or given to customers by illicit third-party installers of cable television.
Prevention To prevent this, cable providers built stronger protection against theft into new
digital cable systems that were deployed beginning in the mid-1990s as part of the changeover to the new digital
HDTV standard, along with assessing a large fine for the entire cost of a set-top box if the customer didn't return it upon the termination of services. This has greatly reduced cable theft, although
pirate decryption continued on some
DVB-C systems that are based on the same compromised encryption schemes formerly used in
satellite television broadcasting. Sometimes an advertisement advertising a free product or service only users illegally descrambling premium services could see would be sent out, which allowed law enforcement to catch the people who called about it. As of 2018, many cable providers have switched to digital-only systems that require mandatory use of either their approved set top boxes or an approved
CableCARD device. In many cases, no analog channels are available, and if they are, are usually just the provider's
paid programming,
Emergency Alert System and
barker channels, or merely a one-channel signal that lets a customer or installer know the signal is viewable on a television set. Channels and programming may also be available through
digital media player devices such as the
Roku or
Apple TV (along with
tablets and
smartphones) via provider
apps, which confirm subscriber eligibility through a private internal
IP network and require an on-network connection to the provider (including disallowing connections to outside
virtual private network services to emulate a home network connection elsewhere), making any piracy through that venue virtually impossible. ==Digital cable systems==