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Open Bug Bounty named among the
Top 5 Bug Bounty programs of 2021
by The Hacker News

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KarstenBerlin | Security Researcher Profile

Security researcher KarstenBerlin has already helped fix 124 vulnerabilities.

Researcher reputation:  10

Real name:
Karsten from Berlin

About me:
Senior DevOps Engineer and WhiteHat in my free time
located in Berlin

Contact email:
[email protected]

Certifications & Diplomas:

Experience in Application Security
< 1 year

Award / Bug Bounty I prefer:
PayPal: or
Amazon Wishlist:
and any kind of graditute

Halls of Fame:

Follow me on:

Ethics and Rules:
Karsten from Berlin is required to abide by the ethics and rules of the Open Bug Bounty project. If you reasonably believe that rules are not respected, please report this to us.

Recommendations and Acknowledgements

@ITSiBeBonn     11 November, 2021
    Twitter ITSiBeBonn ITSiBeBonn from Bundesstadt Bonn:
Sehr geehrter KarstenBerlin,
vielen Dank für die Aufdeckung der Sicherheitslücke auf unserer Webseite, den verantwortungsvollen und konstruktiven Umgang hiermit und den freundlichen Kontakt. Der Hersteller konnte die Schwachstelle dank Ihrer Hilfe inzwischen schließen.

Ich wünsche Ihnen auch weiterhin viel Erfolg bei Ihrer wichtigen Arbeit zum Wohle der Betreiber und Nutzer angreifbarer Seiten wie auch der Netzsicherheit insgesamt.

Mit Freundlichen Grüßen

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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:246
Total reports on VIP sites:11
Total patched vulnerabilities:124
Recommendations received:1
Active since:09.10.2021

Open Bug Bounty Certificate

Researcher Certificate

Reported Vulnerabilities

All Submissions VIP SubmissionsFeatured Submissions

No posts in blog yet

  Latest Patched


  Latest Blog Posts

04.12.2023 by BAx99x
Unmasking the Power of Cross-Site Scripting (XSS): Types, Exploitation, Detection, and Tools
04.12.2023 by a13h1_
$1120: ATO Bug in Twitter’s
04.12.2023 by ClumsyLulz
How I found a Zero Day in W3 Schools
04.12.2023 by 24bkdoor
Hack the Web like a Pirate: Identifying Vulnerabilities with Style
04.12.2023 by 24bkdoor
Navigating the Bounty Seas with Open Bug Bounty

  Recent Recommendations

    4 June, 2024
Researcher reported public Docker local env file, no security breach but this file should not be publicly available, thanks SYPltd.
    4 June, 2024
Researcher reported public local env Docker file, no security breach but file should not be publicly available, thank you SYPltd.
    29 May, 2024
It was the first time for us that we received a report about openbugbounty. The researcher reported a demo dockerfile on our website. No security breach but it's not "professionnal" to see this kind of file on a website.
Thank you SYPltd
    28 May, 2024
Thank you very much for your support and uncovering the vulnerabilities.
    28 May, 2024
Thank you very much for your support and uncovering the vulnerabilities.