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940,889 coordinated disclosures
563,481 fixed vulnerabilities
1306 bug bounties with 2,609 websites
22,373 researchers, 1296 honor badges

M3T4HUM4N | Security Researcher Profile

Security researcher M3T4HUM4N has already helped fix 213 vulnerabilities.

Researcher reputation:  40

Real name:
N. Sampas #M3T4HUM4N

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

Contact email:
[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 !

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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:1129
Total reports on VIP sites:16
Total patched vulnerabilities:213
Total vulnerabilities on Hold (Open Bug Bounty):1
Recommendations received:4
Active since:19.05.2018

Open Bug Bounty Certificate

Researcher Certificate

Reported Vulnerabilities

All Submissions VIP Submissions

No posts in blog yet

  Latest Patched


  Latest Blog Posts

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Better Notifications Mechanism
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Windows Stack Buffer Overflow in a real life app — Exploit development — CloudMe_1.11.2 Buffer Overflow-CVE-2018–6892
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Sysadminotaur nº88
10.02.2021 by Open Bug Bounty
Higher Submissions Quality Standard
25.12.2020 by _Y000_
How to bypass mod_security (WAF)

  Recent Recommendations

@MrMoney84315336     16 April, 2021
    Twitter MrMoney84315336:
Serious, fast and professional.Thanks for the report.
@lmanunza     15 April, 2021
    Twitter lmanunza:
The Researcher found an XSS vulnerability in our site and acted ethically by reporting it to us, so we could fix it in a timely manner. Thank you!
@studentdoctor     14 April, 2021
    Twitter studentdoctor:
Rngdr4 is an absolute professional. Very helpful in finding and helping to resolve our bug. Highly recommended! Thanks, rngdr4!
@lmanunza     13 April, 2021
    Twitter lmanunza:
Pooja found an XSS vulnerability in our website and acted ethically by reporting it to us, as well as providing all the information we needed to reproduce and fix the issue in a timely manner. Thank you very much!
@MrMoney84315336     13 April, 2021
    Twitter MrMoney84315336:
Thank you for reporting the XSS issue.
Thanks to the detailed report, we were able to fix the problem on the same day.