Update issue templates and security documentation for antivirus false positives

Co-authored-by: chipitsine <2217296+chipitsine@users.noreply.github.com>

.github/ISSUE_TEMPLATE/bug_report_or_issue_report.yml

@@ -7,6 +7,8 @@ body:
       value: |
         Thanks for taking the time to fill out this bug report!         
         We provide a template which is specifically made for bug reports, to be sure that the report includes enough details to be helpful.
+        
+        **⚠️ Antivirus False Positive?** If you're reporting an antivirus detection issue, please see [ANTIVIRUS.md](https://github.com/SoftEtherVPN/SoftEtherVPN/blob/master/ANTIVIRUS.md) first. Antivirus false positives should be reported to the antivirus vendor, not as bugs in SoftEther VPN.
   
   - type: checkboxes
     attributes:

.github/ISSUE_TEMPLATE/config.yml

@@ -1,4 +1,8 @@
 contact_links:
+  - name: Antivirus False Positive Detection
+    about: If antivirus software is flagging SoftEther VPN as malicious, this is a false positive. See our documentation for solutions and how to report to antivirus vendors.
+    url: https://github.com/SoftEtherVPN/SoftEtherVPN/blob/master/ANTIVIRUS.md
+
   - name: Are you using SoftEther VPN 4.x?
     about: This repository is for SoftEther VPN 5.x Developer Edition, developed independently from SoftEther VPN 4.x. Visit vpnusers.com if you would like to report issues or ask questions about version 4.x!
     url: https://www.vpnusers.com/

SECURITY.md

@@ -12,4 +12,15 @@ currently being supported with security updates.
 
 ## Reporting a Vulnerability
 
-Please use [github security reporting](https://github.com/SoftEtherVPN/SoftEtherVPN/security/advisories/new)
+Please use [github security reporting](https://github.com/SoftEtherVPN/SoftEtherVPN/security/advisories/new)
+
+## Antivirus False Positive Detection
+
+Some antivirus software may incorrectly flag SoftEther VPN executables as malicious. This is a **false positive** and not a security vulnerability.
+
+**If you encounter antivirus warnings:**
+- See [ANTIVIRUS.md](ANTIVIRUS.md) for detailed information and solutions
+- Report false positives to your antivirus vendor
+- Verify downloads are from official sources only
+
+**SoftEther VPN is safe**: All source code is publicly available and can be reviewed at https://github.com/SoftEtherVPN/SoftEtherVPN