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554,659 coordinated disclosures
356,327 fixed vulnerabilities
841 bug bounties with 1,623 websites
17,324 researchers, 1153 honor badges

JOSEFOX | Security Researcher Profile


Security researcher JOSEFOX has already helped fix 181 vulnerabilities.



Researcher reputation:  230

Real name:
Youssef ABYAA

How to contact me:
You can contact me : https://twitter.com/josef0x
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:
https://buffer.com/security
http://secure.sony.net/hallofthanks

Recommendations and Acknowledgements

    18 February, 2018
     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.
    24 February, 2020
     UKClimbing Paul Phillips from UKClimbing:
Thanks for highlighting the XSS bug. Recommended researcher.
    31 March, 2019
     Downnotify Martin de Vries from DownNotifier.com:
Josefox did a good job reporting an CSRF vulnerability
    28 March, 2019
     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!
    27 February, 2019
     gizmotico Andersen from VegaDesign.net:
Thank you for reporting a XSS vulnerability. Very much appreciated.
    26 October, 2018
     euvtechnology euvtechnology from Engel & Völkers Technology:
Dear Youssef, thank you for getting in touch and helping us keeping our webservices secure!
    8 October, 2018
     astroseekcom Petr9 from Astro-Seek.com:
JOSEFOX helped me with XSS vulnerability report. It's patched now. Thank you.
    5 September, 2018
     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.
    14 June, 2018
     seokerwang Seoker Wang from Pointimize:
Thanks for pointing out the vulnerabilities. Very helpful and appreciated!
    2 April, 2018
     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.

Shows the first 10 recommendations. See all.

Please login via Twitter to add a recommendation

Honor Badges


Number of Secured Websites

10+ Websites
50+ Websites
500+ Websites
WEB SECURITY VETERAN
1000+ Websites

Advanced Security Research

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

Outstanding Achievements

Secured OBB
OBB Advocate
Improved OBB

Commitment to Remediate and Patch

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

Recommendations and Recognition

REPUTABLE
10+ Recommends
FAMOUS
25+ Recommends
GLOBALLY TRUSTED
50+ Recommends

Distinguished Blog Author

1 Post
3 Posts
5+ Posts

Research Statistics



Total reports:428
Total reports on VIP sites:41
Total patched vulnerabilities:181
Total vulnerabilities on Hold (Open Bug Bounty):4
Recommendations received:15
Active since:13.12.2017

Open Bug Bounty Certificate





No posts in blog yet


Reported Vulnerabilities

All Submissions VIP Submissions

Domain Reported Status Type
30.07.2020
On Hold
Cross Site Scripting
26.07.2020
On Hold
Cross Site Scripting
25.07.2020
On Hold
Cross Site Scripting
25.07.2020
On Hold
Cross Site Scripting
18.03.2020
unpatched
Cross Site Scripting
28.02.2020
unpatched
Cross Site Scripting
24.02.2020
unpatched
Cross Site Scripting
16.08.2019
unpatched
Cross Site Scripting
02.08.2019
patched
Cross Site Scripting
26.07.2019
patched
Cross Site Scripting
26.04.2019
patched
Cross Site Scripting
13.04.2019
patched
Cross Site Scripting
13.04.2019
unpatched
Cross Site Scripting
26.03.2019
unpatched
Cross Site Scripting
09.03.2019
unpatched
Cross Site Scripting
09.03.2019
unpatched
Cross Site Scripting
09.03.2019
unpatched
Cross Site Scripting
09.03.2019
unpatched
Cross Site Scripting
09.03.2019
patched
Cross Site Scripting
15.02.2019
unpatched
Cross Site Scripting

  Latest Patched

 10.08.2020 da.ai
 10.08.2020 find-job.net
 10.08.2020 radiotimes.com
 10.08.2020 maserati.com
 10.08.2020 erebounicollege.am
 10.08.2020 gq-magazine.co.uk
 10.08.2020 nintendo.com
 10.08.2020 gucci.com
 10.08.2020 blesk.cz
 10.08.2020 bazos.cz

  Latest Blog Posts

24.06.2020 by Gkexamquiz
How to Find Contacts To Report Bugs & Security Vulnerabilities | Bug Bounty Tutorials 2020
24.06.2020 by 0xcrypto
Improper Access Control - Generic: Unrestricted access to any "connected pack" on docs in coda.io
04.04.2020 by Rando02355205
(Alibaba) message.alibaba.com [IDOR] - [Bug Bounty]
12.03.2020 by Rando02355205
(Paypal) www.paypal.com [CSP High Level] - [XSS Reflected] - [Bug Bounty] - [Write Up]
08.03.2020 by CybeReports
JDECO.net XSS Vulnerability| CybeReports

  Recent Recommendations

    10 August, 2020
     msawired:
Thank you for reporting the XSS vulnerability. Your explanations were very helpful, and we were able to resolve the issue in no time.
    6 August, 2020
     Robert_CMI:
Thank you Rajesh for reporting vulnerabilities on our website, your quick and detailed response was very valuable to us!
    6 August, 2020
     StefanCink:
Thanks to @singhnitesh21 we were able to close a vulnerability on our website asap. Thank you!
    5 August, 2020
     kkb5mobile:
Thank you for pointing out the vulnerability.
Thanks to you, I was able to respond safely.
    5 August, 2020
     kkb5mobile:
Thank you for pointing out the vulnerability.
Thanks to you, I was able to respond safely.