The Home Network feature scans the local network and lets you control the security settings on two additional computers.
The antiphishing feature blocks suspicious sites using a combination of heuristics and white lists. The Pro version includes the "First Visitor" feature that actively scans for malicious code on live Web pages, so that if you are the first one to visit the site after a compromise attack, you'll be protected.
In CNET Labs' performance tests, Trend Micro Internet Security 2009, in general, scored even with Norton Internet Security 2009 this year. In one third-party independent antivirus test, Trend Micro Internet Security 2008 scored well, in the upper-middle rank. On the CNET iTunes test, Trend Micro Internet Security 2009 came in at a respectable 271 seconds, 3 seconds longer than our test system. On the CNET Microsoft Office test, Trend Micro Internet Security 2009 finished last at 1,415 seconds, better than some standalone antivirus products. In a test scanning a single folder with compressed and media files, Trend Micro Internet Security 2009 had very respectable results, completing this test in 229 seconds, only a few seconds more than Norton. In terms of boot speed, Trend Micro Internet Security 2009, at 30.45 seconds, was much faster than Norton Internet Security 2009, at 33 seconds.
To find out how we test antivirus software, see CNET Labs' How we test: Antivirus software page.
In terms of whether Trend Micro Internet Security 2009 will protect your PC, we cite results from two leading independent antivirus testing organizations. From AVtest.org, Trend Micro Internet Security 2008 found 91 percent of the malicious software and 88 percent of the adware in the September 2008 test. Despite stumbling on the On Demand antispyware portion, Trend Micro Internet Security 2008 scored average or better in the other individual tests performed. AV-Comparatives.org has not included Trend Micro in recent tests and so no past test results are available.
Like Symantec, Trend Micro offers free technical support. Users are first directed to an Answer Guide. If you can't find a solution in the FAQ, then you can search the knowledge base, submit a question via e-mail, conduct an online chat (1 a.m. to 5 p.m. PT weekdays and 8 a.m. to 5 p.m. on weekends), or call a representative (5 a.m. to 8 p.m. weekdays only).
Online there is PDF-file documentation. There is also a video tutorial (which other vendors should supply but don't), an interactive learning guide to the product's features, and a Getting Started manual that covers the basics.
For a good, basic Internet Security suite, we recommend Trend Micro Internet Security 2009. You can't beat the price. However, for better protection, it's worth the additional $20 to get the Pro version.