Coordinated and Responsible Vulnerability Disclosure Free Bug Bounty Program 421,794 coordinated disclosures
228,912 fixed vulnerabilities
571 bug bounties with 1111 websites
11,423 researchers, 932 honor badges

Renzi Top VIP Security Researcher of the Month | Security Researcher Profile

Security researcher Renzi has already helped fix 2895 vulnerabilities.

Researcher reputation:  440

Real name:
Felipe Gabriel Renzi

About me:
-> Cyber Security Analyst and Security Researcher (Brazil).
-> We can make Web a Safer Place.

How to contact me:
-> E-mail: [email protected]
-> Contact me as soon as possible to protect your web application!

Certifications & Diplomas:
-> Forest Engineering - UNESP
-> Information Security - SENAC

Experience in Application Security
over 5 years

Award / Bug Bounty I prefer:
-> Bounty Payment (PayPal).
-> Public Recognition & thanks (Here).
-> Swag (T-shirt, stickers, cups).
-> Job Offer (Pentest or Vulnerability Assessment Project).
-> Vouchers (eg. Amazon Brazil)

Halls of Fame:
SoundCloud, Western Union, Alibaba, T-mobile, Telefonica, Huawei, Skyscanner and Jet.

Follow me on:

Recommendations and Acknowledgements

    2 May, 2019
     AndyTrier Andreas from Trier-Saarburg:
Felipe found a XSS flaw in one of our web pages, and kindly told us about it so that we could address it. We'd like to thank Felipe for his prompt and professional disclosure.
    30 April, 2019
     KoegelGmbH Daniel from Kögel:
Felipe kindly pointed out an XSS problem to us. Thanks to his support, we were able to solve the problem quickly.
Thank you very much Felipe, your help is highly appreciated!
    25 April, 2019
     artinberlin Christoph Thomessen from Kuag:
Felipe fand einen XSS Fehler in einer unserer Web-Seiten und gab uns Tipps für ein sicheres Internet. Vielen Dank.
    23 April, 2019
     buerofuenf Jens from Büro 5 GmbH:
Felipe found a XSS security vulnerability in one of our customers site. We fixed it accordingly. He was very fast in answering and very supportive. Thank you very much, your help is highly appreciated! We will keep you in mind for future security checks on other websites.
    15 April, 2019
     matthias_lueck Matthias Lück from Brinkmann Audio:
Felipe found a vulnerability in our website , which we were able to fix with Felipes detailed report. He was very responsive and professional. Highly recommended!
Thank you very much Felipe!
    22 January, 2019
     Majestic Philip Aggrey from Majestic:
Following Felipe's disclosure, we have now fixed the Reflected Cross-Site Scripting web vulnerability you discovered in our "" web-application. We'd like to thank Felipe for his prompt and professional disclosure.
    22 January, 2019
     DJB31st Dave Beaumont :
Found a xss issue, quickly emailed with the affected pages and links to aid resolving. Many thanks
    2 November, 2018
     jddimarco John DiMarco from University of Toronto Computer Science Dept:
Felipe found a XSS flaw in one of our researchers' web pages, and kindly told us about it so that we could address it. Thank you, Felipe.
    14 August, 2019
     runlevelone runlevelone :
Thank you for your great input!
    5 August, 2019
     y0s Yoshi Morimura from Kyoto Univ.:
Felipe found a XSS problem on one of our websites. He responded to me quickly and friendly, which helped us a lot. Thank you so much!

Shows the first 10 recommendations. See all.

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Honor Badges

Number of Secured Websites

10+ Websites
50+ Websites
500+ Websites
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

10+ Recommends
25+ Recommends
50+ Recommends

Distinguished Blog Author

1 Post
3 Posts
5+ Posts

Research Statistics

Total reports:12437
Total reports on VIP sites:4
Total patched vulnerabilities:2895
Total vulnerabilities on Hold (Open Bug Bounty):8685
Recommendations received:28
Active since:31.05.2018
Top Security Researcher Awards: Top Security Researcher of the Month

Open Bug Bounty Certificate

13.08.2019  XSSCon - XSS Tool @Kitploit

Powerfull Simple XSSScanner made with python 3.7



01.05.2019  1000's of default passwords on

01.05.2019  Fuxploider - @almandin

" Fuxploider is an open source penetration testing tool that automates the process of detecting and exploiting file upload forms flaws. This tool is able to detect the file types allowed to be uploaded and is able to detect which technique will work best to upload web shells or any malicious file on the desired web server. "

01.05.2019  Sysadminotaur

Reported Vulnerabilities

All Submissions VIP Submissions

Domain Reported Status Type
Cross Site Scripting
Cross Site Scripting
Cross Site Scripting
Cross Site Scripting

  Latest Patched


  Latest Blog Posts

19.08.2019 by ismailtsdln
IBM - Cross site Scripting [XSS]
15.08.2019 by thevivekkryadav
13.08.2019 by Renzi25031469
XSSCon - XSS Tool @Kitploit
13.08.2019 by Cur1S3
I Found a multiple xss on
13.08.2019 by ZIKADS
xss at

  Recent Recommendations

    23 August, 2019
tnx for the help
    22 August, 2019
Helpfully reported site vulnerability. Thanks.
    22 August, 2019
Thanks for pointing out a vulnerability on one of our websites. And for the professional support.
    22 August, 2019
Thank you for the report! We appreciate it.
    21 August, 2019
One more XSS bug discovered and patched thanks to Gh05tPT. Much appreciated!