Coordinated and Responsible Vulnerability Disclosure Free Bug Bounty Program 383,429 coordinated disclosures
217,789 fixed vulnerabilities
518 bug bounties with 1018 websites
10,304 researchers, 905 honor badges

k0t Top Security Researcher of the Month | Security Researcher Profile


Security researcher k0t has already helped fix 1365 vulnerabilities.



Researcher reputation:  790

About me:
Penetration tester & webdev.

How to contact me:
[email protected]

Experience in Application Security
over 5 years

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

Recommendations and Acknowledgements

    17 June, 2019
     opensolr Ciprian Dimofte from Opensolr SRL:
Thank you very much for your time, and professional help on this crucial security matter.
This could have been catastrophic for our business, would it not have been for your great work !
    6 June, 2019
     aapit David Spreekmeester from Grrr:
Thanks to k0t's sharp observations, we were made aware of a security issue and could patch it before it caused any troubles.
    3 June, 2019
     wirismath Marketing & Communications from WIRIS MATH:
Thanks to k0t indications, we were able to fix a vulnerability in one of our websites quickly. Now this website is much safer for everyone
    30 May, 2019
     MalagaCarCom Ruben from MalagaCar.com:
Hi k0t, we've followed your indications and have fixed the vulnerability in a few minutes. Thank you very much!
    28 May, 2019
     ziduniwien Computer Center from University of Vienna:
Dear k0t,

The University of Vienna would like to thank you for your valuable contribution in finding multiple website security issues. Your input is highly welcome and helps to raise the security level of our educational institution.

Servus and greetings from Vienna, Austria.
    17 May, 2019
     derbarkeeper mixable from mixable:
Thank you for reporting XSS vulnerability. Great work!
    17 May, 2019
     derbarkeeper mixable from mixable:
Thanks k0t for reporting XSS vulnerability on our website!
    16 May, 2019
     biblegateway Bible Gateway from Bible Gateway:
This person's report was accurate and allowed us to implement a fix quickly. Thank you!
    13 May, 2019
     everlats Guillaume from Everlats:
Thanks k0t for your help! Great work!
    7 May, 2019
     source_dr source_dr :
and thanks a trillion for the 3rd XSS vulnerability found !

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Awards and Achievements


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:2282
Total reports on VIP sites:583
Total patched vulnerabilities:1365
Total vulnerabilities on Hold (Open Bug Bounty):375
Recommendations received:42
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 Week Top VIP Security Researcher of the Week Top VIP Security Researcher of the Week



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Reported Vulnerabilities

All Submissions VIP Submissions

Domain Reported Status Type
18.06.2019
On Hold
Cross Site Scripting
18.06.2019
On Hold
Cross Site Scripting
18.06.2019
On Hold
Improper Access Control 
18.06.2019
On Hold
Improper Access Control 
17.06.2019
On Hold
Cross Site Scripting
17.06.2019
On Hold
Cross Site Scripting
17.06.2019
On Hold
Improper Access Control 
17.06.2019
On Hold
Improper Access Control 
17.06.2019
On Hold
Cross Site Scripting
17.06.2019
On Hold
Cross Site Scripting
17.06.2019
On Hold
Improper Access Control 
17.06.2019
On Hold
Cross Site Scripting
17.06.2019
On Hold
Cross Site Scripting
17.06.2019
On Hold
Cross Site Scripting
17.06.2019
On Hold
Cross Site Scripting
17.06.2019
On Hold
Cross Site Scripting
17.06.2019
On Hold
Improper Access Control 
17.06.2019
On Hold
Cross Site Scripting
17.06.2019
On Hold
Improper Access Control 
17.06.2019
On Hold
Improper Access Control 

  Latest Patched

 18.06.2019 uliege.be
 18.06.2019 cntraveler.com
 18.06.2019 karaoke-version.com
 18.06.2019 vatgia.com
 18.06.2019 webnode.sk
 18.06.2019 mega.cl
 18.06.2019 monstersandcritics.com
 18.06.2019 despegar.cl
 18.06.2019 condos.ca
 18.06.2019 topachat.com

  Latest Blog Posts

12.06.2019 by Open Bug Bounty
Open Bug Bounty pursues a steady growth in 2019 with over 212,148 fixed vulnerabilities
27.05.2019 by fakessh
bing openredirect
20.05.2019 by fakessh
Hitachi Incident Response Team (HIRT)
11.05.2019 by MAS00712
Footprinting and Reconnaissance with DIRB Tool (For Security Researcher and Bug Bounty Hunters)
01.05.2019 by Renzi25031469
1000's of default passwords on http://open-sez.me

  Recent Recommendations

    18 June, 2019
     anorwood:
Thanks for pointing out an XSS vulnerability in the markup of one of our applications. Good to have it patched up.
    18 June, 2019
     JuniorTidal:
Thank you Paulo for sharing your expertise. It is much appreciated!
    18 June, 2019
     Jerski124:
Thank you for information about vulnerabilities on our site.
    18 June, 2019
     opensolr:
Thank you for your notification and helping us build a safer environment for our users!
    17 June, 2019
     opensolr:
The research on the cross-domain vulnerability, was a very good catch !
Thank you very much for your time and professional report !