certificate-based security

Certificate-based security is a method used to verify identities online, similar to a digital passport. It involves a digital certificate issued by a trusted authority (called a Certificate Authority) that confirms a website or person is legitimate. When you visit a secure site, your browser checks its certificate to ensure it’s authentic, helping protect against fraud and eavesdropping. This system establishes a trusted connection, ensuring that sensitive information—like passwords or credit card details—remains private and secure during transmission.