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940,893 coordinated disclosures
563,562 fixed vulnerabilities
1306 bug bounties with 2,609 websites
22,375 researchers, 1296 honor badges

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

Security researcher Kapitan has already helped fix 12320 vulnerabilities.

Researcher reputation:  300

Real name:

About me:
Quality Assurance Engineer, part time bug hunter, Acknowledged by Nokia, Blackberry, United Nations, Philips, BBC, Nike and many more.

Contact email:
Email: [email protected]

Alternative Contacts:
Email : [email protected]

Award / Bug Bounty I prefer:
PayPal: [email protected]

Halls of Fame:
Nokia, BBC, United Nations, Blackberry, Philips, Drexel University, Genymotion, Sick, SpringerNature, machinerysafety101, Deutsche Telekom AG

Recommendations and Acknowledgements | Full List:

@JonSmit93366590     12 February, 2021
    Twitter JonSmit93366590 Chris from
Good find! Thank you for letting us know that site configuration was exposed!
@ZiXXiV     8 February, 2021
    Twitter ZiXXiV Bas from Freez FM:
Noticed a file exposure which shouldn't be public. Thanks for bringing this to our attention. Very well and accurate reports. A++
@ReadyTechAU     7 February, 2021
    Twitter ReadyTechAU Nick from ReadyTech:
Good communication, accurate report. Thank you!
@kozakplus     4 February, 2021
    Twitter kozakplus Козак+ from KOZAK+:
Pritam makes important work: finding vulnerabilities he give site owners detailed technical information what's wrong. Thank you very much, Security Researcher.
@EmilMajkowski     13 January, 2021
    Twitter EmilMajkowski Emil from Rentals United:
Pritam was very helpful, he explained well the issue and helped me solve it. Thank you
@ram_terrapay     8 January, 2021
    Twitter ram_terrapay Ram Sundaram from TerraPay:
Pritam was very prompt in his responses and very professional. Thank you
@Nichola40778173     7 January, 2021
    Twitter Nichola40778173 Nicholas McCarthy from Edge Products:
Pritam was a great help. He promptly sent us what the issue was and a full step by step resolution to it. Very much appreciated!
@TopMiata     7 January, 2021
    Twitter TopMiata FRK from M-Dnia:
Pritam was very helpful, he explained well the issue and helped me solving it. Thank you.
@AlsaceBiz     4 January, 2021
    Twitter AlsaceBiz Lucy Watson from KEXINO:
Pritam was responsive and courteous. He clearly outlined the issue, providing links for our tech team with the means to correct it promptly.

Thank you so much, Pritam!
@DougNix     3 January, 2021
    Twitter DougNix Doug Nix from Compliance inSight Consulting Inc.:
Kapitan was courteous and respectful at all times. He was quick to respond, and he helped to verify that the vulnerability was corrected. I was pleased with the way he handled the disclosure and resolution.
@Travelsignposts     3 January, 2021
    Twitter Travelsignposts Tony Page from Travelsignposts Pty. Ltd.:
Pritam replied promptly to my query and drew my attention to an egregious (and longstanding!) omission to delete a vulnerable file that his script had picked up. I felt like banging my head against the nearest wall for missing he saved me a fractured skull!
I see that Pritam has found literally hundreds if not thousands of vulnerabilities across the web, and provides a great service; his programming skills speak for themselves, as do his high ethical standards.
Thank you, sir!
@BenCPenney     31 December, 2020
    Twitter BenCPenney Ben Penney from Loop1:
Pritam was very courteous and provided information needed to resolve in a very quicker manner. Your work is much appreciated sir!
@FortiterGames     31 December, 2020
    Twitter FortiterGames Dave from Fortiter Games:
Great work by Pritam in highlighting the issue in a clear way that enabled me to correct it promptly.
@IsThisBetterYet     29 December, 2020
    Twitter IsThisBetterYet Gavin Mannion from CriticalHit:
Pritam was quick to respond and provided us with details on how to close our security loophole
@CDCNewswire     28 December, 2020
    Twitter CDCNewswire Cory Roberts from CDC Gaming Reports:
Pritam was very quick to respond with further details and a fix for us to make.

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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:24550
Total reports on VIP sites:425
Total patched vulnerabilities:12320
Total vulnerabilities on Hold (Open Bug Bounty):9571
Recommendations received:15
Active since:18.12.2020
Top Security Researcher Awards:Gold Star Top Security Researcher of the Month
Top VIP Security Researcher Awards: Top VIP Security Researcher of the Month Top VIP Security Researcher of the Week Top VIP Security Researcher of the Week

Open Bug Bounty Certificate

Researcher Certificate

Reported Vulnerabilities

All Submissions VIP Submissions

No posts in blog yet

  Latest Patched


  Latest Blog Posts

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Better Notifications Mechanism
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Windows Stack Buffer Overflow in a real life app — Exploit development — CloudMe_1.11.2 Buffer Overflow-CVE-2018–6892
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)

  Recent Recommendations

@MrMoney84315336     16 April, 2021
    Twitter MrMoney84315336:
Serious, fast and professional.Thanks for the report.
@lmanunza     15 April, 2021
    Twitter lmanunza:
The Researcher found an XSS vulnerability in our site and acted ethically by reporting it to us, so we could fix it in a timely manner. Thank you!
@studentdoctor     14 April, 2021
    Twitter studentdoctor:
Rngdr4 is an absolute professional. Very helpful in finding and helping to resolve our bug. Highly recommended! Thanks, rngdr4!
@lmanunza     13 April, 2021
    Twitter lmanunza:
Pooja found an XSS vulnerability in our website and acted ethically by reporting it to us, as well as providing all the information we needed to reproduce and fix the issue in a timely manner. Thank you very much!
@MrMoney84315336     13 April, 2021
    Twitter MrMoney84315336:
Thank you for reporting the XSS issue.
Thanks to the detailed report, we were able to fix the problem on the same day.