Symantec products, such as Norton Antivirus and Symantec Endpoint Security, are designed to receive frequent updates to ensure optimal protection against new threats. These updates include virus definitions, security patches, and feature enhancements. Typically, Symantec releases updates for its antivirus definitions on a daily basis or even multiple times throughout the day, depending on the urgency of the threats identified. Additionally, users may receive software updates that contain new features or improvements. These updates are generally pushed automatically to ensure users have the latest protection without requiring manual intervention. It is advisable for users to check the product settings to confirm that automatic updating is enabled. For specific details regarding update schedules or the latest updates, visiting the official Symantec website may provide helpful information.