Report a Vulnerability
Submit, help fixing, get kudos.
Start a Bug Bounty
Run your bounty program for free.
732,717 coordinated disclosures
435,643 fixed vulnerabilities
1140 bug bounties with 2,190 websites
20,542 researchers, 1255 honor badges

M3T4HUM4N | Security Researcher Profile

Security researcher M3T4HUM4N has already helped fix 212 vulnerabilities.

Researcher reputation:  40

Real name:
N. Sampas #M3T4HUM4N

About me:
A Portuguese XSS hunter and addicted to SQLI, Website Pentester! Ethical Hacker!

How to contact me:
[email protected]

Alternative Contacts:

Certifications & Diplomas:
CEH (Certified Ethical hacker)

Experience in Application Security
over 5 years

Award / Bug Bounty I prefer:
# PayPal money -
# Amazon Vouchers
# T-shirts, Sweats, Caps, Gadgets etc. (Swag)
# Hall of Fame
# Certificate of Appreciation
# Profile recommendation will be really appreciat

Follow me on:

Recommendations and Acknowledgements

@octogone     30 April, 2019
    Twitter octogone Claude Brisson from FFG:
Thanks to M3T4HUM4N for identifying our XSS vulterability. Very useful.
@pejadesign     8 November, 2018
    Twitter pejadesign Gabriele Peja from Peja Design:
Many thanks to M3T4HUM4N who has found and help me to correct a possible security problem on my site. He is the best researcher that I have ever known. Great professionality!
@VTX_Telecom     5 June, 2018
    Twitter VTX_Telecom Patrick from VTX Telecom:
Thanks a lot M3T4HUM4N for helping us correct a XSS vulnerabilty on our website. Based on the very detailed description of the problem, we have been able to fix the problem very quickly. Great Job!
@supportdi31     28 May, 2018
    Twitter supportdi31 Patrick from Depeche Interactive:
Thanks to M3T4HUM4N, and we've been able to correct a XSS vulnerabilty on our website. Very good description of the problem, and great reactivity.
Nice work !

Please login via Twitter to add a recommendation

Honor Badges

Number of Secured Websites

10+ Secured Websites Badge
50+ Secured Websites Badge
500+ Secured Websites Badge
Web Security Veteran Badge
10+ Websites
50+ Websites
500+ Websites
1000+ Websites

Advanced Security Research

WAF Bypasser Badge
CSRF Master Badge
AppSec Logic Master Badge
Fastest Fix Badge
WAF Bypasser
CSRF Master
30+ Reports
AppSec Logic Master
30+ Reports
Fastest Fix
Fix in 24 hours

Outstanding Achievements

Secured OBB Badge
OBB Advocate Badge
Improved OBB Badge
Secured OBB
OBB Advocate
Improved OBB

Commitment to Remediate and Patch

Patch Master Badge
Patch Guru Badge
Patch Lord Badge
Patch Master
55% Patched
Patch Guru
65% Patched
Patch Lord
75% Patched

Recommendations and Recognition

10+ Recommends
25+ Recommends
50+ Recommends

Distinguished Blog Author

Distinguished Blog Author Badge
Distinguished Blog Author Badge
Distinguished Blog Author Badge
1 Post
3 Posts
5+ Posts

Research Statistics

Total reports:1128
Total reports on VIP sites:16
Total patched vulnerabilities:212
Recommendations received:4
Active since:19.05.2018

Open Bug Bounty Certificate

Researcher Certificate

No posts in blog yet

Reported Vulnerabilities

All Submissions VIP Submissions

  Latest Patched


  Latest Blog Posts

25.12.2020 by _Y000_
How to bypass mod_security (WAF)
10.12.2020 by _Y000_
sql injection to bypass Mod_Security
10.12.2020 by _Y000_
Create encoded sql payloads
26.10.2020 by _r00t1ng_
Bypass Addslashes using Multibyte Character
26.10.2020 by _r00t1ng_
One Payload to Inject them all - MultiQuery Injection

  Recent Recommendations

@smiteworks     15 January, 2021
    Twitter smiteworks:
Rajesh was very helpful in providing information and penetration testing on our site. With this information, we were able to harden our infrastructure.
@matrixrewriter     15 January, 2021
    Twitter matrixrewriter:
We had no idea that this vulnerability existed in many PHP-based websites and you kindly reported it to us. Thanks for your help and all the best for your career!
@JoseLev41970568     14 January, 2021
    Twitter JoseLev41970568:
Specialist in web application penetration tester, student and passionate about computer security and ethical hacking.
@far00t1     14 January, 2021
    Twitter far00t1:
i recommend jose luis for his work and enthusiasm in helping us with our technological infrastructure.
@lorenzoherrera     14 January, 2021
    Twitter lorenzoherrera:
Raajesh reported us a nasty vulnerability that totally slipped through our radars, we didn't even know that was possible! Thanks to him and his thorough report we've been able to solve it and now our site is more secure! Thank you for your time and effor, Rajeesh!