Trend Micro ServerProtect version 5.58 can be easily circumvented via the mechanism that limits how many files to scan.

[Mert Sarıca]

http://www.packetstormsecurity.org/filedesc/Bypass.pdf.html

Some people say this method works also on Trend Micro InterScan
Messaging Security Suite and InterScan Web Security Suite. I really
appreciate if you use one of these and can able to test.