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1,246,748 coordinated disclosures
899,027 fixed vulnerabilities
1,584 bug bounty programs, 3,148 websites
28,430 researchers, 1,443 honor badges

Oc3f Top VIP Security Researcher of the Month | Security Researcher Profile


Security researcher Oc3f has already helped fix 901 vulnerabilities.



Researcher reputation:  50

Real name:
Tadj Youssouf

About me:
Independent Security Researcher
Listed in many HoF: Google , Facebook, Microsoft, Mozilla CVE-2018-5176, Apple , bitdefender, Sony, AT&T, Western union, eBay, ...worked also as consultant for a lot of online banks under NDA contracts.

Contact email:
[email protected]

Experience in Application Security
3-5 years

Halls of Fame:
Google : "tadj youssouf"

Recommendations and Acknowledgements

@xmajox     6 September, 2016
    Twitter xmajox Rodrigo from GetYourGuide:
Oc3f has helped us identify and fix a vulnerability with our platform. He was respectful and a pleasure to deal with. Keep up the good work!
@DIMDTM     20 November, 2017
    Twitter DIMDTM Driss from Dimelo:
Merci pour cette remontée de faille, nous avons pu la fixer rapidement !
@CorentinDIDIEUX     16 August, 2017
    Twitter CorentinDIDIEUX CorentinD from FitnessBoutique:
Merci Oc3f pour la remontée d'information ! :)
@TristanGuiheux     28 December, 2016
    Twitter TristanGuiheux Tristan Guiheux from Personal Recommendation:
0c3f has helped us many times to find and fix some issues on web sites we're protecting. This kind of help is greatly appreciated from a security perspective. This way we can improve ourselves and protect our customers. Thanks again in my name.
@SACHAVUKOVIC     1 August, 2016
    Twitter SACHAVUKOVIC Sacha_VUK from VIDAL:
Oc3f have find an issue on our web site, thanks for your works and help to fix it quickly !

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
WEB SECURITY VETERAN
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

REPUTABLE Badge
FAMOUS Badge
GLOBALLY TRUSTED Badge
REPUTABLE
10+ Recommends
FAMOUS
25+ Recommends
GLOBALLY TRUSTED
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:1373
Total reports on VIP sites:314
Total patched vulnerabilities:901
Recommendations received:5
Active since:03.05.2016
Top Security Researcher Awards:Gold Star Top Security Researcher of the Month
Top VIP Security Researcher Awards: Top VIP Security Researcher of the Week Top VIP Security Researcher of the Week Top VIP Security Researcher of the Week

Open Bug Bounty Certificate


Researcher Certificate

Reported Vulnerabilities

All Submissions VIP SubmissionsFeatured Submissions




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  Latest Patched

 25.06.2022 mohca.gov.bt
 25.06.2022 ual.es
 25.06.2022 aslteramo.it
 25.06.2022 understood.org
 25.06.2022 ossokolje.edu.ba
 25.06.2022 e.csb.gov.lv
 25.06.2022 mansfield.vic.gov.au
 25.06.2022 educba.com
 25.06.2022 fodors.com

  Latest Blog Posts

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The Most used Chrome Extensions are Used For Penetration Testing.
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eG Manager v7.1.2: Improper Access Control lead to Remote Code Execution (CVE-2020-8591)
14.07.2021 by Open Bug Bounty
Interview With Open Bug Bounty

  Recent Recommendations

@TiagoGuedesEGo1     20 June, 2022
    Twitter TiagoGuedesEGo1:
shashank_bhure made us aware of several security vulnerabilities that represented security flaws of several degrees and needed to be rectified.

It was a pleasure working with you and I hope we can work again in the future, Thank you!
@TiagoGuedesEGo1     15 June, 2022
    Twitter TiagoGuedesEGo1:
Hardik_850 made us aware of several security vulnerabilities that represented security flaws of several degrees and needed to be rectified.

It was a pleasure working with you and I hope we can work again in the future, Thank you!
@DeBuecher     3 June, 2022
    Twitter DeBuecher:
Peter was of good help
@salmankhan2016     26 May, 2022
    Twitter salmankhan2016:
thanyou security_helper5
@securityhelper5     26 May, 2022
    Twitter securityhelper5:
thank you for report