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1,339,588 coordinated disclosures
974,925 fixed vulnerabilities
1,658 bug bounty programs, 3,282 websites
30,005 researchers, 1,464 honor badges

flyerdef | Security Researcher Profile

Security researcher flyerdef has already helped fix 265 vulnerabilities.

Researcher reputation:  160

Contact email:
email: [email protected]

Certifications & Diplomas:
Full Stack Web Attack
Certification Professional Penetration Tester

Experience in Application Security
3-5 years

Award / Bug Bounty I prefer:
Swag (T-shirt, cup, gimmick)

thanks, Recognition .. .

Follow me on:

Ethics and Rules:
flyerdef 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

@netz_meister     2 May, 2019
    Twitter netz_meister marko from netz-meister:
Luis reported a XSS vulnerability which we could fix. Thanks for making the web more secure!
@Bleeding4Metal     29 March, 2019
    Twitter Bleeding4Metal Opa Steve from Bleeding4Metal:
Luis answers quick and polite and delivers complete informations about the found security leak. We spent just 10 minutes to fix the problem found by him and we will check our new release with some additional quality aspects.

@Pinchanzee     29 March, 2019
    Twitter Pinchanzee Chris from Scotweb:
Luis brought our attention to a security vulnerability we had overlooked. We were unfamiliar with OpenBugBounty so thought it might be a scam, but upon contacting Luis he explained the problem clearly. He even offered to help fix it (but we had the facilities to fix it in-house). Very grateful!
@lymonium     26 January, 2019
    Twitter lymonium Simon from GCP:
Luis was polite and helpful. Responded to my enquiries quickly. Definitely recommended!
@BDUe_Fachverlag     3 January, 2019
    Twitter BDUe_Fachverlag Nadine from BDÜ Fachverlag:
Very helpful information and report. We appreciate the quick feedback and the excellent polite communication. Recommended!
@PhilippeMachler     7 December, 2018
    Twitter PhilippeMachler Philippe Maechler from Glattwerk AG:
Thank you very much for your report and your help.
We highly appreciate this.
@AlexanderWenz     6 December, 2018
    Twitter AlexanderWenz Alex Wenz from
Thanks for your help getting our website safe! We really appreciate this!
@HoutVasthouden     7 November, 2018
    Twitter HoutVasthouden Bert from Woodwize:
We really appreciate what you have done for us and thank you for the quick, open and correct way of communicating with us.

@filu82     7 November, 2018
    Twitter filu82 Pascal from
Thank you for the report and the instructions how to fix the issue.
@boengli     31 October, 2018
    Twitter boengli mediacoding_rl from mediacoding:
Thank you very much for your report and your help.
We highly appreciate this.

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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:1634
Total reports on VIP sites:6
Total patched vulnerabilities:265
Recommendations received:10
Active since:15.10.2018

Reported Vulnerabilities

All Submissions VIP 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

@skyynet_de     28 September, 2022
    Twitter skyynet_de:
Taha identified an XSS vulnerability on our site which could be fixed fast. Thanks for the provided information!
@S1awek1     27 September, 2022
    Twitter S1awek1:
Krystian found a bug on my e-store website. Thanks Krystian :)
@anonpatcher     16 September, 2022
    Twitter anonpatcher:
Thank you to Dipu1A for making us aware of an XSS vulnerability on our site. We promptly patched it following their guidance!
@ClementBourgoin     16 September, 2022
    Twitter ClementBourgoin:
Thanks to Sébastien that helped me found a XSS vulnerability on a e-commerce website.
@Dave_J_Moran     9 September, 2022
    Twitter Dave_J_Moran:
Highly recommended and a huge thanks for assisting with the disclosure of an XSS Vulnerability, thanks for getting in touch!