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818,744 coordinated disclosures
462,296 fixed vulnerabilities
1273 bug bounties with 2,430 websites
21,612 researchers, 1277 honor badges

JOSEFOX | Security Researcher Profile

Security researcher JOSEFOX has already helped fix 184 vulnerabilities.

Researcher reputation:  230

Real name:
Youssef ABYAA

How to contact me:
You can contact me :
or : [email protected]

Experience in Application Security
1-3 years

Award / Bug Bounty I prefer:
> Bounty (Paypal)
> Swag (T-shirt)
> Public acknowledgement

Halls of Fame:

Recommendations and Acknowledgements

@jacobjovelou     18 February, 2018
    Twitter jacobjovelou Jacob J from 1x Innovations AB:
Excellent researcher that helped us to find several XSS vulnerabilities on our website. Very friendly and professional communication.
@UKClimbing     24 February, 2020
    Twitter UKClimbing Paul Phillips from UKClimbing:
Thanks for highlighting the XSS bug. Recommended researcher.
@Downnotify     31 March, 2019
    Twitter Downnotify Martin de Vries from
Josefox did a good job reporting an CSRF vulnerability
@RESTPOSTENde     28 March, 2019
    Twitter RESTPOSTENde Christoph from GKS Handelssysteme GmbH:
Thanks to Youssef for pointing the finger to a vulnerbility on our website. Through his support we were able to patch it in almost no time. It's guys like him that make the internet a better and safer place!
@gizmotico     27 February, 2019
    Twitter gizmotico Andersen from
Thank you for reporting a XSS vulnerability. Very much appreciated.
@euvtechnology     26 October, 2018
    Twitter euvtechnology euvtechnology from Engel & Völkers Technology:
Dear Youssef, thank you for getting in touch and helping us keeping our webservices secure!
@astroseekcom     8 October, 2018
    Twitter astroseekcom Petr9 from
JOSEFOX helped me with XSS vulnerability report. It's patched now. Thank you.
@levofski     5 September, 2018
    Twitter levofski Chris Levy from Strategies:
Very helpfully found and gave us the details of a bad vulnerability in a website. Now patched thanks to the good information.
@seokerwang     14 June, 2018
    Twitter seokerwang Seoker Wang from Pointimize:
Thanks for pointing out the vulnerabilities. Very helpful and appreciated!
@icarus200510     2 April, 2018
    Twitter icarus200510 Saeyoung Lee from Bucheon city, Korea:
Thank you for notifying us of the issue with the XSS vulnerability.
Very helpful and very much appreciated.

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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:438
Total reports on VIP sites:41
Total patched vulnerabilities:184
Total vulnerabilities on Hold (Open Bug Bounty):2
Recommendations received:15
Active since:13.12.2017

Open Bug Bounty Certificate

Researcher Certificate

No posts in blog yet

Reported Vulnerabilities

All Submissions VIP Submissions

  Latest Patched


  Latest Blog Posts

10.02.2021 by Renzi25031469
Sysadminotaur nº88
10.02.2021 by Open Bug Bounty
Higher Submissions Quality Standard
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

  Recent Recommendations

@kNHrpaG66ZaoOcS     26 February, 2021
    Twitter kNHrpaG66ZaoOcS:
Thanks for contacting us about the vulnerability issue.
We've fixed it without any problems.
Thanks for your cooperation and quick response.
Best Regards,
@bb_tw4     25 February, 2021
    Twitter bb_tw4:
Cyber_India informed us via OpenBugBounty about a problem on our Website. Very responsible. Thank you very much!
@HR4YOU_AG     25 February, 2021
    Twitter HR4YOU_AG:
Thanks to @cyber_pramod for reporting an issue with our homepage! Very nice contact!
@simondale101     23 February, 2021
    Twitter simondale101:
Thanks for finding the XSS Bug, which was pretty obscure. I appreciate your responsiveness on the issue :)
@dirqzn     23 February, 2021
    Twitter dirqzn:
Many thanks to Cyber_India for informing us about a vulnerability. Communication was quick and transparent!