Coordinated and Responsible Vulnerability Disclosure Free Bug Bounty Program 454,221 coordinated disclosures
242,780 fixed vulnerabilities
601 bug bounties with 1221 websites
12,269 researchers, 960 honor badges

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

Security researcher Renzi has already helped fix 6200 vulnerabilities.

Researcher reputation:  530

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

    24 September, 2019
     ukegawa ukegawa from kurogo:
Thank you for the report! We appreciate it.
    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.
    2 October, 2019
     ToshiharuKuroy1 Kuroyanagi :
Thanks to Felipe's advice, we could fix potential XSS threat.
And we appreciate his very kind and proffesional support.
Thanks a lot.

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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:14685
Total reports on VIP sites:5
Total patched vulnerabilities:6200
Total vulnerabilities on Hold (Open Bug Bounty):4439
Recommendations received:36
Active since:31.05.2018
Top Security Researcher Awards: Top Security Researcher of the Month

Open Bug Bounty Certificate

01.10.2019  #Security 100%

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
Cross Site Scripting

  Latest Patched


  Latest Blog Posts

17.10.2019 by geeknik
The "S" in IOT is for Security
16.10.2019 by darknetguy
Best XSS Vectors
01.10.2019 by Renzi25031469
#Security 100%
18.09.2019 by Leon
SSRF | Reading Local Files from DownNotifier server
13.09.2019 by drok3r
Collection of information | Google Hacking and Dorks basic

  Recent Recommendations

    18 October, 2019
Thank you 0xrocky for identifying a vulnerability and making us aware of it. Great security researcher to work with. Keep up the good work!
    17 October, 2019
A kudos to 0xrocky for his professional work in not using the identified vulnerabilities and alerting us
    17 October, 2019
Thanks for the hint :)
Good work.
    17 October, 2019
Thanks to 0xrocky for identifying the vulnerability. Now we patched the vulnerability.
    17 October, 2019
Thank you very much for making us aware of the issue and providing us a high quality vulnerability report which helped us identify the source of the vulnerability right away.