The Email Defense package provides complementary protection to on-premise anti-virus products, and is powered by industry-leading virus-scanning engines McAfee, Authentium and Sophos. With the Email Defense triple virus filter and worm solution, you get:

• Our proprietary worm detection technology, which identifies and intercepts zero-day mass mailing worms before they enter your corporate network.
• Protection from three leading third-party engines, McAfee, Authetium and Sophos.
• Sophisticated security to complement your current on-premise solution.
• Up-to-the-minute defense against the latest threats with virus definition updates every five minutes.

Email Defense's Virus and Worm Scanning feature protects customers from the dangers of mass mailing worms and viruses, often hours before anti-virus services can distribute signature updates to their customers. Through sophisticated content behavior analysis, our Threat Center is able to quickly identify sudden surges of suspicious email messages, which are then intercepted before they can reach customers' email networks.

This worm detection system proves valuable in instances such as the outbreak of the destructive MyDoom worm, which was blocked 23 minutes after it was detected. Meanwhile, third-party anti-virus engines took up to five hours to issue protection to their customers.

Using a multi-layered spam filtering approach, Email Defense can dynamically calculate the spam probability of each spam message and:

• Instantly block 99% of Spam.
• Complete safe, external scanning to block Spam before it reaches your network.
• Accurately Spam filter content to ensure industry-leading low false positive rates.
• Provide up-to-the-minute defense against the latest blended email threats.
• Effectively quarantine spam for seven days.
• Generate custom quarantine management reports.

Unlike some competitor spam filtering solutions which use only a single spam classification technique, Email Defense leverages several of the industry's most effective spam detection techniques to separately analyze the same message, including:

• Premium Anti-Spam Multi-Language Filter - Utilizing Cloudmark AntiSpam filtering, this level of security protects you from Spam on a global scale. It is continually updated based on real-time feedback provided by a worldwide network of users. The software used for this filter is constantly being reevaluated to ensure that the very best programs are being used for our filters.
• Sender Policy Framework (SPF)/Sender ID - For inbound messages, LuxSci can check if the message has an associated SPF/Sender ID record. If there is, it can help determine if the email sender's domain is from a list of IP addresses authorized to send email from that domain. LuxSci can also protect your domain from being used in forged email messages.
• Statistical Filtering - Our filtering methods utilize a statistical Bayesian algorithm to determine the probability that an email message is spam based on how often elements in that message have appeared in other spam emails.
• Industry Heuristics - Email Defense incorporates thousands of successful industry-wide spam-fighting rules into its filtering layers.
• Proprietary Heuristics - Email Defense experts write and update thousands of proprietary rules to block spam using real-time data from the Threat Center.
• Reputation Analysis - Like black and white lists, reputation analysis blocks spam-based on comprehensive information about the source of the message - rating the reputation of the sender based upon the percentage of spam messages sent from that IP address in the past.
• URL filtering - URL filtering works by comparing embedded links found in email messages with URLs associated with identified spam.
• Reputation-based RBL filtering - Email Defense assigns a level of trust to key real-time blackhole lists (RBL), which rates the reputation of the RBL based on its accuracy at blocking spam.

Phishing attacks use spam techniques to distribute large volumes of fraudulent, yet official-looking, emails designed to deceive consumers into disclosing sensitive information. By disguising the messages to appear from well-known banks, online retailers and credit card companies, phishers have been able to convince up to five percent of email users to give up sensitive personal information.

Phishing emails, like spam, can be identified and filtered out of inbound email to stop employees from receiving them. The Email Defense Service anti-spam rules automatically protect businesses from anti-fraud and phishing scams before they can enter your network. The Email Defense Threat Center monitors the global state of email communication, 24 hours a day, seven days a week, to stay ahead of the latest spam and phishing attacks and keep your network safe from unwanted mail.