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614,592 coordinated disclosures
393,736 fixed vulnerabilities
929 bug bounties with 1,868 websites
18,833 researchers, 1200 honor badges

mat | Security Researcher Profile


Security researcher mat has already helped fix 12 vulnerabilities.



Researcher reputation:  20

Real name:
cosmo

About me:
Professional Information Security Analyst for a large company, earned two degrees in CS, worked in academia, science and tech enthusiast.


Don't be hesitant reach out to me I don't bite, let's see those vulnerabilities closed.

How to contact me:
Either drop me a mail at: [email protected]

Experience in Application Security
over 5 years

Award / Bug Bounty I prefer:
Keep in mind, helping you, fixing your problems does take time and is work, thus payment would be appreciated.
If you're a small business and low on funds, swag and/or thanks on Twitter :)

Recommendations and Acknowledgements

@iGopherFr     8 May, 2019
    Twitter iGopherFr Audrey from iGopher:
He found an XSS security flaw on our website that we did not notice despite our security tests. I recommend Mat without hesitation!

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
WEB SECURITY VETERAN
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

REPUTABLE Badge
FAMOUS Badge
GLOBALLY TRUSTED Badge
REPUTABLE
10+ Recommends
FAMOUS
25+ Recommends
GLOBALLY TRUSTED
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:42
Total reports on VIP sites:11
Total patched vulnerabilities:12
Recommendations received:1
Active since:20.04.2019



No posts in blog yet


Reported Vulnerabilities

All Submissions VIP Submissions

Domain Reported Status Type
31.05.2019
unpatched
Cross Site Scripting
31.05.2019
unpatched
Cross Site Scripting
31.05.2019
unpatched
Cross Site Scripting
30.05.2019
unpatched
Cross Site Scripting
21.05.2019
unpatched
Cross Site Scripting
21.05.2019
patched
Cross Site Scripting
21.05.2019
unpatched
Cross Site Scripting
20.05.2019
patched
Cross Site Scripting
20.05.2019
unpatched
Cross Site Scripting
20.05.2019
unpatched
Cross Site Scripting
19.05.2019
patched
Cross Site Scripting
19.05.2019
patched
Cross Site Scripting
18.05.2019
unpatched
Cross Site Scripting
18.05.2019
unpatched
Cross Site Scripting
17.05.2019
unpatched
Cross Site Scripting
17.05.2019
unpatched
Cross Site Scripting
17.05.2019
patched
Cross Site Scripting
16.05.2019
patched
Cross Site Scripting
16.05.2019
patched
Cross Site Scripting
16.05.2019
unpatched
Cross Site Scripting

  Latest Patched

 31.10.2020 adsglobe.com
 31.10.2020 huduser.gov
 30.10.2020 prensa-latina.cu
 30.10.2020 dek-d.com
 30.10.2020 123rf.com
 30.10.2020 t3n.de
 30.10.2020 489pro.com
 30.10.2020 dgtle.com
 29.10.2020 photobucket.com
 29.10.2020 istockphoto.com

  Latest Blog Posts

26.10.2020 by _r00t1ng_
Bypass Addslashes using Multibyte Character
26.10.2020 by _r00t1ng_
One Payload to Inject them all - MultiQuery Injection
26.10.2020 by _r00t1ng_
Routed SQL Injection
26.10.2020 by _r00t1ng_
DIOS the SQL Injectors Weapon
26.10.2020 by p4c3n0g3
How to find AngularJS XSS

  Recent Recommendations

@Eiffel_Language     31 October, 2020
    Twitter Eiffel_Language:
Thank you for your efforts and reporting the XSS vulnerability you found on eiffel.org .
@benskiddle     30 October, 2020
    Twitter benskiddle:
Great disclosure of an SQL injection bug with good details to replicate the issue. Thank you.
@MizoueShumpei     29 October, 2020
    Twitter MizoueShumpei:
Thank you very much for your help.
@adridder     28 October, 2020
    Twitter adridder:
Thank you for your help with this XSS vulnerability on our site. We appreciate the responsible reporting via openbugbounty.
@gaborvitez     28 October, 2020
    Twitter gaborvitez:
Ajaysen R found a reflected cross site scripting bug in one of our cgi scripts, this way he helped us improve the security of our website. He was really fast to react, working with him was really a pleasure. We are grateful for the issues he made us aware of.