Pixel.mathtag.com

I use Outlook 2015 for email. Pixel.mathtag.com seems to popup on emails from 2 specific sources.  I have blacklisted them and tightened the email scanner settings. The popup does not open a browser, its just a small popup which goes away very quickly. 
 
I have a concern that a similar type of threat may slip through in the future.
 
Thank You Very Much,
Billy  
Senior Systems Administrator/Developer

Hi Billy,
The answer for the issue is posted in your previous post / thread.
please follow single thread for quick resolution .
Thank you

Why isn't "Contacting:\\pixel.mathtag.com\event" Caught by AVG Internet Security.

Thank You

Hello Billy,

Thank you for the information.
If you get the popup again, please do let us know.

Hi Billy,
The answer for the issue is posted in your previous post / thread.
please follow single thread for quick resolution .
Thank you

Billy, Please refrain from carrying out multiple postings on the same subject! You won't obtain an answer to your query any faster!. See other posting (https://support.avg.com/answers?id=906b00000008tjJAAQ).
AVG Guru

I use Outlook 2015 for email. Pixel.mathtag.com seems to popup on emails from 2 specific sources.  I have blacklisted them and tightened the email scanner settings. The popup does not open a browser, its just a small popup which goes away very quickly. 
 
I have a concern that a similar type of threat may slip through in the future.
 
Thank You Very Much,
Billy  
Senior Systems Administrator/Developer

Hi Billy,

Sorry for the inconvenience,  we will help you with the issue .
Please let us know whether you are using any email application like outlook to view your email .
If you are using internet browser to view your email then please let us know which browser you are using.
Does pixel.mathtag.com opens every-time you  try to open an email attachment ?
Does this pop up issue occur for all emails ? or does it occur only for specific  emails ?  


Please let us know and we will solve the issue
Thank you