This video shows When and How to Revoke a Security Certificate

You may choose to revoke an SSL Certificate if:

• You are closing your business
• You are shutting down the domain

You must revoke an SSL certificate as soon as possible if there has been a security breach, this may include:

• The private key has been stolen or compromised
• Sharing the private key with another party
• detecting an intrusion on your web server
• receiving a report that the private key has been made public