DISUK is a UK based manufacturer of hardware encryption appliances for tape systems.  DISUK's Paranoia family, of tape encryption appliances, was launched in 1996 and has been successfully used to protect data in a number of industries; such as financial, healthcare, government, military and corporate establishments. The Paranoia range of products is available globally.

DISUK is a private UK based company dedicated to developing storage security solutions to address critical business requirements, including data privacy, regulatory compliance, intellectual property protection, and internal controls. DISUK was founded in 2004, and provides security solutions to many of the world's largest enterprise customers.