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1,026,127 coordinated disclosures
637,569 fixed vulnerabilities
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n0sign4l | Security Researcher Profile

Security researcher n0sign4l has already helped fix 40 vulnerabilities.

Researcher reputation:  10

Real name:
Leonardo Porpora

About me:
I'm student at the Liceo Redi in Arezzo, I do really like cyber security since I was 15 and I'm working hard every day to make my knowledges better and better. I do research and pentesting, and nowadays these are the things that I like most. When I break into systems I get so excited, I think that beeing an Ethical Hacker is a great way to help people because it's a way to improve the security and prevent cyber criminals to have unathourized access. I'm a member of hacker group.

Contact email:
You can contact me by e-mail [email protected] or better through Signal (39) 3453289898

Experience in Application Security
1-3 years

Award / Bug Bounty I prefer:
Being a researcher is good way to help people that can't afford a PT, if you feel like giving me something more for the time I spent trying helping you, you could send me Bitcoins, Swag stuff :)

Follow me on:

Recommendations and Acknowledgements

@KantorStaf     21 June, 2018
    Twitter KantorStaf Admin KSP from KSP:
Very fast response, clear and precise to help our website secure and better

Please login via Twitter to add a recommendation

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:213
Total reports on VIP sites:4
Total patched vulnerabilities:40
Recommendations received:1
Active since:12.06.2018

Reported Vulnerabilities

All Submissions VIP Submissions

No posts in blog yet

  Latest Patched


  Latest Blog Posts

14.07.2021 by Open Bug Bounty
Interview With Open Bug Bounty
25.05.2021 by 0xrocky
Google XSS Game
25.05.2021 by ShivanshMalik12
Testing for XSS (Cross Site Scripting)
25.05.2021 by darklotuskdb
Easy XSS On Mostly Educational Websites Via Moodle
25.04.2021 by ParanjpeSanmarg
Testing Subdomain Takeover Vulnerability

  Recent Recommendations

@pentestinghub     23 July, 2021
    Twitter pentestinghub:
Thank you chenzhen for making us aware of a vulnerability that was previously unknown to us.

It was a pleasure working with him, Thank you!

Thanks & Regards
Tuhin Bose
Chief Information Security Officer
@Synthesys3     15 July, 2021
    Twitter Synthesys3:
Thanks Tw0F0rty for making me aware of a vulnerability involving an apparently innocuous log report on my website :)
@MPDL     15 July, 2021
    Twitter MPDL:
Thank you for your detailed report. With your support we were able to fix the vulnerabilities.
@MPDL     13 July, 2021
    Twitter MPDL:
Thanks a lot 0xrocky for identifying the vulnerabilities and alert us. Great security researcher to work with. Keep up the good work!
@SchmitzNicolas2     13 July, 2021
    Twitter SchmitzNicolas2:
Thx for your help in securing this website.