Cavium (formerly Cavium Networks) can help keep networks secure without hiding them in a cave somewhere. The company designs specialized microprocessors used in secure network transmissions, based on processor technology developed by ARM and MIPS Technologies. Cavium's customers have included Cisco Systems, Fujitsu, Nokia, Samsung Electronics, Sumitomo, and ZTE. Manufacturing is contracted out to Fujitsu Semiconductor, Taiwan Semiconductor Manufacturing, and United Microelectronics. Distributors handle around one-third of sales. Customers in the US account for more than a third of Cavium's sales.