Threat Actor Mindset | LegionHunter

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LegionHunters is a Medium publication dedicated to security researchers, focusing on high-quality, verified cybersecurity content. The publication aims to combat fake vulnerability reports, plagiarized articles, and low-effort AI-generated content by enforcing strict submission guidelines. Writers must have discovered legitimate, non-duplicate vulnerabilities in bug bounty programs (crowd-sourced or self-hosted) and provide verifiable proof.

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You Should Know:

1. Web Cache Poisoning Techniques

Dishant Modi, the first writer for LegionHunters, specializes in Web Cache Poisoning, a technique where attackers manipulate cached responses to serve malicious content.

Example Attack Scenario:

GET / HTTP/1.1 
Host: example.com 
X-Forwarded-Host: attacker.com

HTTP/1.1 200 OK 
Cache-Control: public 
X-Cache: HIT 
Content-Length: 1234 
... 

If the server caches the response with X-Forwarded-Host: attacker.com, subsequent users may receive poisoned content.

Testing Command (Using cURL):

curl -H "X-Forwarded-Host: evil.com" http://example.com -I 

Check if the response header includes `X-Cache: HIT`.

2. Detecting Fake Bug Reports

LegionHunters verifies submissions by checking:

  • Bug bounty platform usernames (e.g., HackerOne, Bugcrowd).
  • Blurred sensitive data (domains, URLs, response bodies).

OSINT Verification Command:

whois example.com | grep "Registrant" 

Helps confirm if a disclosed domain matches the target.

3. Preventing Cache Poisoning (Defensive Steps)

Add cache-busting headers in your web app:

location / { 
proxy_cache_bypass $http_cache_control; 
add_header Cache-Control "no-store, must-revalidate"; 
} 

4. Linux Commands for Security Researchers

  • Analyze HTTP Traffic:
    tcpdump -i eth0 -w traffic.pcap 'port 80' 
    
  • Check Open Ports:
    nmap -sV target.com 
    
  • Extract URLs from Logs:
    grep -Eo '(http|https)://[^/"]+' access.log | sort -u 
    

What Undercode Say:

LegionHunters sets a high standard for cybersecurity content by requiring proof of real-world exploits and discouraging plagiarism. Security researchers must:
– Verify findings before submission.
– Use OSINT tools (Maltego, SpiderFoot) for recon.
– Avoid premature disclosures without permission.

For aspiring bug hunters, mastering Burp Suite, cURL, and Nmap is essential. Always test cache headers and misconfigurations in web apps.

Expected Output:

A structured, actionable guide on Web Cache Poisoning and LegionHunters’ submission process, with practical commands for security testing.

Prediction:

As bug bounty programs grow, fake submissions will increase. Publications like LegionHunters will become crucial in maintaining trust in cybersecurity research. Expect stricter validation tools (blockchain-based proof?) in the future.

References:

Reported By: Abhirup Konwar – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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