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974,164 coordinated disclosures
614,013 fixed vulnerabilities
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22,784 researchers, 1,308 honor badges

flyerdef | Security Researcher Profile

Security researcher flyerdef has already helped fix 265 vulnerabilities.

Researcher reputation:  160

Real name:

Contact email:
email: [email protected]

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

Experience in Application Security
< 1 year

Award / Bug Bounty I prefer:
paypal mail: [email protected]

Swag (T-shirt, cup, gimmick)

thanks, Recognition .. .

Follow me on:

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

Open Bug Bounty Certificate

Researcher Certificate

Reported Vulnerabilities

All Submissions VIP Submissions

No posts in blog yet

  Latest Patched


  Latest Blog Posts

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Testing Subdomain Takeover Vulnerability
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Better Notifications Mechanism
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Windows Stack Buffer Overflow in a real life app — Exploit development — CloudMe_1.11.2 Buffer Overflow-CVE-2018–6892
10.02.2021 by Renzi25031469
Sysadminotaur nº88
10.02.2021 by Open Bug Bounty
Higher Submissions Quality Standard

  Recent Recommendations

@philippejadin     14 May, 2021
    Twitter philippejadin:
Thank you for reporting an issue with the presentation website of the project and for the quick replies !
@DjMagrao_     11 May, 2021
    Twitter DjMagrao_:
Thanks for founding xss errors on my website and fixing then.
@DouglasRao42     10 May, 2021
    Twitter DouglasRao42:
Profissional competente que tem contribuído ativamente no campo da segurança da informação.
@obb20210429     6 May, 2021
    Twitter obb20210429:
Thanks for a quick and useful report that helped us find and resolve the issue.
@MrGviana     6 May, 2021
    Twitter MrGviana:
Ricardo, thank you for reporting vulnerabilities and helping me to solve them.