The glossary below contains many of the terms you will find in common use throughout the Symantec Security Response website. Please refer to this list to find definitions of terms and answers to other Internet security-related questions.

digital certificate

A digital certificate is an electronic credit card that establishes a user’s credentials when doing business or other transactions on the Web. It is issued by a Certificate Authority (CA). It contains the user’s name, a serial number, expiration dates, a copy of the certificate holder’s public key (used for encrypting and decrypting messages and digital signatures), and the digital signature of the certificate-issuing authority so that a recipient can verify that the certificate is real.