Barracuda Energize Updates provide you the maximum protection against the latest types of spam, spyware, and virus attacks. In addition content filter categories and website lists are updated for content filtering. Barracuda Central continuously monitors the Internet for new trends in network security threats. Updates are then delivered to your Barracuda products to provide timely and accurate protection. This protection includes Spam Rules, Virus Definitions, Spyware Definitions, and Content Filtering information. Updates are delivered on an hourly basis to make sure you always have the latest definitions and the latest protection.