How It Works: InterScan Messaging Hosted Security Advanced

How It Works:TInterScan Messaging
Hosted Security Advanced
A Trend Micro White Paper I September 2008TInterScan Messaging Hosted Security Advanced
TABLE OF CONTENTS
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
SOLUTION OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
GUARANTEED AVAILABILITY AND SPAM-BLOCKING EFFECTIVENESS. . . . . . . . . . . . . . . . . . 4
CUSTOMIZED THREAT FILTERING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 . Rules for viruses and other malicious code . Rules for spam or phishing . Other threat protection rules
Outbound Email Filtering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Content Filtering Capabilities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Email Encryption. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 1
Conclusion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 2
Related Resources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 3
2 WHITE PAPER I HOW IT WORKS: InterScan Messaging Hosted Security Advanced TInterScan Messaging Hosted Security Advanced
INTRODUCTIONAccording to experts at TrendLabs, spam now makes up close to 95% of all email and continues to grow. In the first three months of 2008 spam rates almost doubled over rates observed at the end of 2007 and TrendLabs 1predicts that average daily spam volumes will increase by 30 to 50 billion messages per day within the year.
As spam continues to grow at dramatic rates, traditional on-premise email security products are failing to keep up. This limitation is one of the primary reasons that IDC predicts demand for hosted security solutions -also 2known as SaaS (Software as a Service) solutions-will grow by more than 30% annually through 2012. For context, the growth rate for hosted email security is projected to be more than eight times that of the traditional software email security market, and more than 60% faster than appliance-based email security solutions.
Most companies already have some form of legacy antispam and email security product in place. These products are most often traditional email security appliances or software products with inherent hardware capacity limits to handle large spam volumes. Once the amount of spam exceeds this limit, the on-premise solution will rapidly become overloaded, which in turn significantly slows email delivery.Often, the help desk is the first to become aware of this problem as complaints start to come in from end users.
This traditional model also allows spam and other email threats to be introduced into the company's network environment, and adds significant infrastructure costs, such as bandwidth and storage, as spam consumes staff and network resources.
On-premise email security products also require ongoing tuning to maintain effectiveness, and that usually means at least a partially-dedicated person to keep the product up to date. Too often, organizations face a trade-off between lower user productivity due to more spam showing up in email boxes and having IT staff spend a greater percentage of each day maintaining, tuning and troubleshooting email security products.
Why consider a hosted antispam and email security solution?We spoke with a number of Trend Micro customers about why they migrated from traditional, on-premise email security products to a hosted antispam solution. Some of the common complaints about legacy email security products were:1. Performance of current email security product declining, that is, spam blocking rates going down and false-positive rates going up 2. Nee... [download for more]