Cisco Notification Service
Sign up to receive notifications relevant to your Cisco Content Security Appliances, such as Security Advisories, Field Notices, End of Sale and End of Support statements, and information about software updates and known issues.
You can specify options such as notification frequency and types of information to receive. You should sign up separately for notifications for each product that you use.
To sign up, visit http://www.cisco.com/cisco/support/notifications.html
A Cisco.com account is required. If you do not have one, see Registering for a Cisco Account.