A peripheral is an external device that connects to a computer to add or enhance its functionality. Examples include keyboards, mice, printers, scanners, external hard drives, and storage devices like floppy or cassette drives. Peripherals can be input devices (such as a mouse or keyboard), output devices (such as monitors or printers), or storage devices (such as external drives). In cybersecurity, peripherals can introduce security risks if not properly managed, as they may serve as entry points for malware or unauthorized access. Proper security measures and device management are essential to protect systems from threats associated with peripherals.