"HTTP CSS PE Download detected"

Norton Security | Norton Internet Security
1

 

My friend need help to solve the problem about "HTTP CSS PE Download detected" on the Symantec Software - Endpoint. As this sentence always appearing on his PC. He hope can solve it ASAP, but He can't find out any solution. Just know it is a dangerous warning. Details as following:
"Severity: High
This attack could pose a serious security threat. You should take immediate action to stop any damage or prevent further damage from happening.
Description
This signature detects attempts to download malicious executable files downloaded as a CSS file.
Additional Information
Malicious files downloads attempt to evade IPS and other technologies by being naming the file with a different extension.
Affected
* All Operating Systems"
Anyone can help me to solve this threat?
Thanks
Stephen Man

 

<<Edit: Removed unwanted content that was posted twice within the same message>>

2

 

My friend need help to solve the problem about "HTTP CSS PE Download detected" on the Symantec Software - Endpoint. As this sentence always appearing on his PC. He hope can solve it ASAP, but He can't find out any solution. Just know it is a dangerous warning. Details as following:
"Severity: High
This attack could pose a serious security threat. You should take immediate action to stop any damage or prevent further damage from happening.
Description
This signature detects attempts to download malicious executable files downloaded as a CSS file.
Additional Information
Malicious files downloads attempt to evade IPS and other technologies by being naming the file with a different extension.
Affected
* All Operating Systems"
Anyone can help me to solve this threat?
Thanks
Stephen Man

 

<<Edit: Removed unwanted content that was posted twice within the same message>>