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1,246,329 coordinated disclosures
899,015 fixed vulnerabilities
1,584 bug bounty programs, 3,148 websites
28,425 researchers, 1,442 honor badges

JOSEFOX | Security Researcher Profile


Security researcher JOSEFOX has already helped fix 190 vulnerabilities.



Researcher reputation:  230

Real name:
Youssef ABYAA

Contact email:
You can contact me on : https://twitter.com/josef0x OR : nodlerazz.014[at]gmail.com

Experience in Application Security
1-3 years

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

Halls of Fame:
https://buffer.com/security
http://secure.sony.net/hallofthanks

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 DownNotifier.com:
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 VegaDesign.net:
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 Astro-Seek.com:
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
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:443
Total reports on VIP sites:42
Total patched vulnerabilities:190
Recommendations received:15
Active since:13.12.2017

Open Bug Bounty Certificate


Researcher Certificate

Reported Vulnerabilities

All Submissions VIP Submissions




No posts in blog yet










  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

15.02.2022 by sepkatpro
Ultimate XSS Polyglot
11.11.2021 by mistry4592
The Most used Chrome Extensions are Used For Penetration Testing.
08.10.2021 by NNeuchi
How I Found My First Bug Reflected Xss On PIA.GOV.PH(Philippine Information Agency)
26.08.2021 by PyaePhyoThu98
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