Data pattern for SSN or CC with file type as text/html is matching .dll files

Reply
L2 Linker

Data pattern for SSN or CC with file type as text/html is matching .dll files

Hi All,

In my LAB Test,

Here is what I did,

++ Created a data pattern with CC (10) and SSN (10) to match SSN or CC

++ Under Data Filtering Profile, added the pattern with file type as "text/html" with Alert threshold as 1

++ Sent an email with a file "TESTssn.dll"

++ It is hitting the rule

++ It seems Firewall is detecting the DLL files under file type "text/html"

Note:

How I created the file,

a) Created a text file with some random SSN number in it

b) Changed the extension from .txt to .dll

Is this expected? or its False positive?

Whenever we try to open a .dll file, windows by default select HTML or we can open it as a text file. I am not sure if this information is related.

Any thoughts?

Like what you see?

Show your appreciation!

Click Like if a post is helpful to you or if you just want to show your support.

Click Accept as Solution to acknowledge that the answer to your question has been provided.

The button appears next to the replies on topics you’ve started. The member who gave the solution and all future visitors to this topic will appreciate it!

These simple actions take just seconds of your time, but go a long way in showing appreciation for community members and the Live Community as a whole!

The Live Community thanks you for your participation!