Spam Cube was a hardware network security device developed in the early 2000s and launched in March 2006. It was designed for home users and connected between a router and a broadband modem, providing network-level security for up to 4 computers without requiring software installation on individual machines. The device retailed at $150 and included built-in anti-spam protection as a core feature. Additional security capabilities — specifically anti-virus and anti-phishing protection — were available through an optional subscription service called "Security OnDemand," priced at $52 per year. The Spam Cube was notable as an early consumer-oriented network security appliance, receiving coverage from publications including PC World and the New York Times. The product is no longer commercially available; the company's website now serves as an archived reference to the original product.