Coordinated and Responsible Vulnerability Disclosure Free Bug Bounty Program 254,935 coordinated disclosures
153,316 fixed vulnerabilities
206,109 websites, 17,189 VIP websites
6,823 researchers, 6,915 subscribers

stfn | Security Researcher Profile


Security researcher stfn has already helped fix 238 vulnerabilities.



Researcher reputation:  30

Real name:
Stefan

About me:
former pentester
former mobile security researcher
freelancing now

How to contact me:
[email protected] (english or german)

Experience in Application Security
3-5 years

Award / Bug Bounty I prefer:
Acknowledgment/Recommendation
HoF
Swag
Gift Cards/Paypal$$$

Halls of Fame:
vodafone.de

Follow me on:
Twitter

Recommendations and Acknowledgements

    9 July, 2018
     BarnabyWalters Barnaby from BW Musical Instruments:
Stefan found an XSS vulnerability on my personal site and, when asked about it, was very helpful and quick to respond with information about how to reproduce and fix the issue. Thanks a lot!

Please login via Twitter to add a recommendation

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

Research Statistics



Open Bug Bounty Certificate:Download
Total reports:3226
Total reports on VIP sites:24
Total patched vulnerabilities:238
Total vulnerabilities on Hold (Open Bug Bounty):2828
Recommendations received:1
Active since:03.04.2018

Reported Vulnerabilities

All Submissions VIP Submissions

Domain Reported Status Type
13.08.2018
On Hold
Cross Site Scripting
13.08.2018
On Hold
Cross Site Scripting
13.08.2018
On Hold
Cross Site Scripting
13.08.2018
On Hold
Cross Site Scripting
13.08.2018
On Hold
Cross Site Scripting
13.08.2018
On Hold
Cross Site Scripting
12.08.2018
On Hold
Cross Site Scripting
10.08.2018
On Hold
Cross Site Scripting
10.08.2018
On Hold
Cross Site Scripting
09.08.2018
On Hold
Cross Site Scripting
09.08.2018
On Hold
Cross Site Scripting
09.08.2018
On Hold
Cross Site Scripting
09.08.2018
On Hold
Cross Site Scripting
09.08.2018
On Hold
Cross Site Scripting
09.08.2018
On Hold
Cross Site Scripting
09.08.2018
On Hold
Cross Site Scripting
09.08.2018
On Hold
Cross Site Scripting
09.08.2018
On Hold
Cross Site Scripting
09.08.2018
On Hold
Cross Site Scripting
09.08.2018
On Hold
Cross Site Scripting

  Latest Patched

      smartbox.com
    Patched on 14.08.2018
      moneycontrol.com
    Patched on 13.08.2018
      customerservice-macys.com
    Patched on 13.08.2018
      sharecare.com
    Patched on 13.08.2018
      businesswire.com
    Patched on 13.08.2018
      elo7.com.br
    Patched on 12.08.2018
      tate.org.uk
    Patched on 12.08.2018
      qatarliving.com
    Patched on 12.08.2018
      polar.com
    Patched on 12.08.2018
      hautelook.com
    Patched on 12.08.2018

  Recent Recommendations

    24 July, 2018
     spudstuff:
Tarun is very professional and helpful. His research was exemplary and he comes highly recommended. Thanks Tarun!
    23 July, 2018
     rtournoy:
Siruja provided quick and helpful information which helped us fix the issue. Thank you !
    18 July, 2018
     hikingsite:
Thanks a lot Adel to help me to improve the security of my website. Your examples were very clear and to the point and your follow-up very thorough. Keep up the good work to make the internet a safer place!
    18 July, 2018
     AOKBayern:
Vielen Dank Armin, dass Sie eine Sicherheitslücke an uns gemeldet haben. Wir nehmen solche Dinge sehr ernst und konnten dank Ihren Hinweisen in Zusammenarbeit mit unserem technischen Dienstleister die Sicherheitslücke beseitigen.
    17 July, 2018
     HamRadioOutlet:
Excellent catch! We thought we fixed all XSS on our site but Siruja found one we missed. Even provided extra detail to test it. Thanks!