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748,118 coordinated disclosures
438,254 fixed vulnerabilities
1148 bug bounties with 2,200 websites
20,689 researchers, 1257 honor badges

gdattacker | Security Researcher Profile

Security researcher gdattacker has already helped fix 377 vulnerabilities.

Researcher reputation:  660

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

How to contact me:
Gmail: [email protected]

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, Sony, United Nations Organisation, Pluralsight's, Envato, Abacus, Castbox, Jet, Facebook, inflectra, CodePen, FanDuel,, JPmorganChase, ledger.. etc.

Follow me on:

Recommendations and Acknowledgements

@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!
@cpweather     2 January, 2021
    Twitter cpweather Christian from
Thanks for your help in identifying security problem in my website code!
@kushidat     26 December, 2020
    Twitter kushidat Tatsuya Kushida from RIKEN BRC:
Thank you so much for suggesting the vulnerability. The prompt and detailed response helped solve the issues.
@studentdoctor     1 December, 2020
    Twitter studentdoctor Lee from studentdoctor:
Fantastic work by gdattacker, found errors on two of our sites that he helped us test following patching. Thanks!
@studentdoctor     26 November, 2020
    Twitter studentdoctor Lee from studentdoctor:
Identified two CVEs that we responded to immediately. Excellent and friendly communication. Highest recommendation!

Thank you!
@SNTech2     26 November, 2020
    Twitter SNTech2 Steve from Sharenet:
A big thank you for reporting the bug and providing all the information required to quickly fix the bug. Much appreciated and keep up the good work!
@AsictSoc     18 November, 2020
    Twitter AsictSoc Security Operation Center from Politecnico di Milano:
Dear gdattacker,

the SOC of Politecnico di Milano would like to thank you for disclosing us a XSS vulnerability on our infrastructure.
@SteffenBugenha1     18 November, 2020
    Twitter SteffenBugenha1 Steffen Bugenhagen from HeizPellets24:
Thank you for finding a another XSS vulnerability within our Application. The Response was also quick and detailed so it was easy to fix this quickly. Keep up the good work!
@SteffenBugenha1     18 November, 2020
    Twitter SteffenBugenha1 Steffen Bugenhagen from HeizOel24:
Thank you for finding a XSS vulnerability within our Application. The Response was quick and detailed so it was easy to fix this quickly. Keep up the good work!
@recifs     17 November, 2020
    Twitter recifs Philippe Rivière :
Thank you for the security report

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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:1071
Total reports on VIP sites:64
Total patched vulnerabilities:377
Total vulnerabilities on Hold (Open Bug Bounty):128
Recommendations received:48
Active since:25.03.2019

Open Bug Bounty Certificate

Researcher Certificate

No posts in blog yet

Reported Vulnerabilities

All Submissions VIP SubmissionsFeatured Submissions

  Latest Patched


  Latest Blog Posts

25.12.2020 by _Y000_
How to bypass mod_security (WAF)
10.12.2020 by _Y000_
sql injection to bypass Mod_Security
10.12.2020 by _Y000_
Create encoded sql payloads
26.10.2020 by _r00t1ng_
Bypass Addslashes using Multibyte Character
26.10.2020 by _r00t1ng_
One Payload to Inject them all - MultiQuery Injection

  Recent Recommendations

@KodiMaster1     23 January, 2021
    Twitter KodiMaster1:
Good and professional report. I was a pleasure working with him!
@igucci     23 January, 2021
    Twitter igucci:
Thank you for the notification and quick & polite response.
Keep up the great work!
@randomthing4ev1     22 January, 2021
    Twitter randomthing4ev1:
Thank you for pointing out the vulnerability on our website! Very responsive.
@dtestitall     22 January, 2021
    Twitter dtestitall:
Thank you for finding the information disclosure vulnerability! Praveen was very responsive!
@hoshitabeman     21 January, 2021
    Twitter hoshitabeman:
It was very helpful for me to point out that I forgot to delete!