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1,301,181 coordinated disclosures
930,827 fixed vulnerabilities
1,624 bug bounty programs, 3,229 websites
29,192 researchers, 1,451 honor badges

gdattacker | Security Researcher Profile

Security researcher gdattacker has already helped fix 553 vulnerabilities.

Researcher reputation:  740

Real name:
Gaurav Kumar

About me:
Gaurav Kumar, A Security Researcher From India Who Loves To Make The Web A Safer Place For Everybody By Reporting Any Security Vulnerability I Found Online. Contact Details Mentioned Below.

PayPal & Payoneer e-mail: [email protected]
BTC Address: 3P1tao8sycwbJmCPFkueJG4ErJg8zrkxbp

Contact email:
[email protected]

Alternative Contacts:

Experience in Application Security
over 5 years

Award / Bug Bounty I prefer:
Paypal, Amazon card, BTC, Swags, Gifts. After all, it takes a lot of efforts and time to find Security Vulnerabilities :)

Halls of Fame:
Facebook, Google, Apple, Sony, Freelancer, United Nations Organisation, Pluralsight, Envato, Abacus, Castbox, Jet, inflectra, CodePen, FanDuel,, JPmorganChase, ledger.. etc.

Follow me on:

Ethics and Rules:
Gaurav Kumar 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

@sczid     6 November, 2020
    Twitter sczid Zentraler Informatikdienst from University of Vienna:
Dear gdattacker,

The University of Vienna would like to thank you for your valuable contribution in finding a website security issue. Your input is highly welcome and helps to raise the security level of our educational institution.

Servus and greetings from Vienna, Austria.
@TinNguy54963117     23 September, 2020
    Twitter TinNguy54963117 Tin from American Water:
Thank you for the accurate and quick response in disclosing our vulnerability. This was done in a professional and responsible manner through the bug bounty program, giving us time to remediate.
@satcharts     24 September, 2019
    Twitter satcharts Peterson :
Thank you for helping make our website more secure.

We really appreciate it. Keep up the good work!
@cb_ximo     25 October, 2021
    Twitter cb_ximo Kino from
Thank you for helping to make our site more secure
@diogenesverlag     13 October, 2021
    Twitter diogenesverlag Susanne from Diogenes Verlag:
Thanks a lot for reporting this bug and thus making our site more secure.
@showmypc     11 October, 2021
    Twitter showmypc from ShowMyPC:
Thanks for your reporting and making our platform secure. We appreciate your work!
@giroud_francois     10 October, 2021
    Twitter giroud_francois Giroud from WebLettre:
Thanks a lot for the notification, and for the explanations that allowed us to fix the vulnerability !
@jrkok     7 April, 2021
    Twitter jrkok Security team from
Thanks for the notification of a specific XSS vulnerability and the detailed background information.
@macports     7 April, 2021
    Twitter macports Rainer Müller from MacPorts:
Thank you for bringing an XSS issue on our site to our attention!
@cpweather     2 January, 2021
    Twitter cpweather Christian from
Thanks for your help in identifying security problem in my website code!

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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:1451
Total reports on VIP sites:80
Total patched vulnerabilities:553
Total vulnerabilities on Hold (Open Bug Bounty):2
Recommendations received:54
Active since:25.03.2019

Open Bug Bounty Certificate

Researcher Certificate

Reported Vulnerabilities

All Submissions VIP SubmissionsFeatured Submissions

No posts in blog yet

  Latest Patched


  Latest Blog Posts

08.07.2022 by 4websecurity
CVE 2022-29455 is still affecting millions of Wordpress sites
08.07.2022 by kh4sh3i_
Zabbix - SAML SSO Authentication Bypass
08.07.2022 by FR13ND0x7F
The Time Machine — Weaponizing WaybackUrls for Recon, BugBounties , OSINT, Sensitive Endpoints and what not
15.02.2022 by sepkatpro
Ultimate XSS Polyglot
11.11.2021 by mistry4592
The Most used Chrome Extensions are Used For Penetration Testing.

  Recent Recommendations

@CERT_rlp     15 August, 2022
    Twitter CERT_rlp:
The team of CERT-rlp would like to thank ShiratoriYoshi for a responsible and coordinated disclosure of vulnerabilities
@luiztools     5 August, 2022
    Twitter luiztools:
Confirmo que Jonathan Fonseca (bypikeno) encontrou uma vulnerabilidade XSS em meu site, a qual está sendo providenciada a correção neste momento. Agradeço pelo aviso e disposição em ajudar.
@ThomasDBending     31 July, 2022
    Twitter ThomasDBending:
Thank you for finding an XSS vulnerability in my website.
@ThomasDBending     31 July, 2022
    Twitter ThomasDBending:
Thank you for finding an XSS vulnerability in my website.
@MrMoney84315336     26 July, 2022
    Twitter MrMoney84315336:
Thank you to @Legacy_Defender for reporting and providing prompt and courteous details on our website, leading to a quick and pain free resolution. Keep up the good work.