Open Bug Bounty selected among the
Top 5 Bug Bounty programs to watch
in 2021 by The Hacker News

For security researchers
Report a Vulnerability
Submit, help fixing, get kudos.
For website owners
Start a Bug Bounty
Run your bounty program for free.
1,202,879 coordinated disclosures
811,946 fixed vulnerabilities
1,571 bug bounty programs, 3,122 websites
27,908 researchers, 1,427 honor badges

k0tTop-50 VIP Open Redirect Reporter Top Security Researcher of the Month | Security Researcher Profile


Security researcher k0t has already helped fix 4357 vulnerabilities.



Researcher reputation:  2400

About me:
Penetration tester & webdev.

Contact email:
[email protected]

Experience in Application Security
over 5 years

Award / Bug Bounty I prefer:
Bug Bounty Payment, Gift Card, T-Shirts.

Recommendations and Acknowledgements

@bjdean     17 November, 2021
    Twitter bjdean bjdean from HomeCo:
Very helpful and responsive to questions. Thanks for the report.
@unruly_infra     8 November, 2021
    Twitter unruly_infra Yannick from Unruly:
Many thanks for discovering this issue, this is appreciated!
@HkuLibtss     31 October, 2021
    Twitter HkuLibtss wind from wind:
Thank you for reporting the vulnerability! We appreciate your help.
@VitaliyKolosWDL     6 September, 2021
    Twitter VitaliyKolosWDL Vitaliy from WDL:
K0t found vulnerabilities on our website and we were able to fix them quickly. Thanks for your help!
@jcrms     26 August, 2021
    Twitter jcrms Jean Cremers from planetdance:
Many thanks to k0t for identifying multiple vulnarabilities on my site.
@LOVD     8 July, 2021
    Twitter LOVD Ivo Fokkema from LOVD:
K0t has successfully identified a new XSS vulnerability on our website and reported it so we could fix it.
@darione90     14 June, 2021
    Twitter darione90 Dario from Società Astronomica G.V. Schiaparelli:
Many thanks for finding and reporting an XSS vulnerability on our website!
@infoclimat     11 June, 2021
    Twitter infoclimat Frederic A from Infoclimat:
I can confirm k0t has found an XSS vulnerability on our website, that was fixed quickly after. Thanks for the finding.
@williamdam_dk     20 May, 2021
    Twitter williamdam_dk Kasper from William Dams Boghandel:
I would like to give a HUGE thank you to k0t for letting me know about a XXS vulnerability in our shop.
@obb20210429     6 May, 2021
    Twitter obb20210429 Ian from CUPE:
Thanks for a quick and useful report that helped us find and resolve the issue.

Shows the first 10 recommendations. See all.

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:6410
Total reports on VIP sites:1096
Total patched vulnerabilities:4357
Total vulnerabilities on Hold (Open Bug Bounty):16
Recommendations received:129
Active since:05.05.2016
Top VIP Security Researcher Awards: Top VIP Security Researcher of the Month Top VIP Security Researcher of the Month Top VIP Security Researcher of the Month Top VIP Security Researcher of the Month Top VIP Security Researcher of the Month Top VIP Security Researcher of the Month Top VIP Security Researcher of the Month Top VIP Security Researcher of the Month Top VIP Security Researcher of the Month Top VIP Security Researcher of the Week Top VIP Security Researcher of the Week Top VIP Security Researcher of the Week Top VIP Security Researcher of the Week Top VIP Security Researcher of the Week

Reported Vulnerabilities

All Submissions VIP Submissions




No posts in blog yet










  Latest Patched

 16.05.2022 baclieu.gov.vn
 16.05.2022 essuir.sumdu.edu.ua
 16.05.2022 westerncape.gov.za
 16.05.2022 mobilecentre.am
 16.05.2022 e-store.bluebrand.me
 16.05.2022 jic.edu.sa
 16.05.2022 faculdadefacit.edu.br
 16.05.2022 dochkisinochki.ru
 16.05.2022 uner.edu.ar
 16.05.2022 trangnguyen.edu.vn

  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

@notedekd     28 April, 2022
    Twitter notedekd:
@singhnitesh21 provides precise and comprehensive vulnerable information. I highly appreciate the support and quick response.
@CERT_rlp     27 April, 2022
    Twitter CERT_rlp:
The team of CERT-rlp would like to thank Antonio for a responsible and coordinated disclosure of vulnerabilities
@DeanHalter     25 April, 2022
    Twitter DeanHalter:
Appreciate the skill and effort Nitesh and others in the open bounty, ethical hacker community bring to the table. He pointed out an XSS vulnerability on our website.
@TiagoGuedesEGo1     22 April, 2022
    Twitter TiagoGuedesEGo1:
Pranjal 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 him and I hope we can work again in the future, Thank you!
@DeanHalter     20 April, 2022
    Twitter DeanHalter:
Thank you for reporting the pair of XSS issues you found on our site. Your expertise and ethical reporting/handling helped us secure our website. Keep up the great and necessary work.