If your merchant uses Trustwave to scan your site please be aware that there automatic scan will light up with false positives and require you to dispute them.
What is a "false positive"?
a test result which incorrectly indicates that a particular condition or attribute is present.
"stress testing, a routine diagnostic tool used in detecting heart disease, results in a significant number of false positives in women"
In the case of Trustwave there software is not able to correctly determine information about our servers do to the strength of the security employed.
Please see our list of common false positives. Trustwave False Positives