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493,210 coordinated disclosures
268,947 fixed vulnerabilities
666 bug bounties with 1,344 websites
13,690 researchers, 1037 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

    8 May, 2019
     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!

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Honor Badges


Number of Secured Websites

10+ Websites
50+ Websites
500+ Websites
WEB SECURITY VETERAN
1000+ Websites

Advanced Security Research

WAF Bypasser
CSRF Master
30+ Reports
AppSec Logic Master
30+ Reports
Fastest Fix
Fix in 24 hours

Outstanding Achievements

Secured OBB
OBB Advocate
Improved OBB

Commitment to Remediate and Patch

Patch Master
55% Patched
Patch Guru
65% Patched
Patch Lord
75% Patched

Recommendations and Recognition

REPUTABLE
10+ Recommends
FAMOUS
25+ Recommends
GLOBALLY TRUSTED
50+ Recommends

Distinguished Blog Author

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

 23.01.2020 tizianafausti.com
 23.01.2020 analytics.zethlon.me
 23.01.2020 panjiva.com
 23.01.2020 upm.es
 23.01.2020 ag.idaho.gov
 23.01.2020 emc.ncep.noaa.gov
 23.01.2020 maxpixel.net
 23.01.2020 vidyard.com
 23.01.2020 torcedores.com
 23.01.2020 frandroid.com

  Latest Blog Posts

20.01.2020 by Rando02355205
XSS on "www.alibaba.com" (Alibaba WAF 405) Bypassed.
16.01.2020 by Open Bug Bounty
Brief Recap of Open Bug Bounty’s Record Growth in 2019
12.01.2020 by JCQ_47
WAF Cloudflare Bypass XSS at Nexusmods.com
08.01.2020 by devl00p
Top 100 Open Redirect dorks
08.01.2020 by Rando02355205
XSS WAF Bypassed

  Recent Recommendations

    23 January, 2020
     SandiSchleicher:
Thank you for reporting the XSS issue you found. Based on your information we were able to fix the problem. Thank you!
    23 January, 2020
     nerdonomist:
Vighnesh Gupta alerted us in a professional and prompt manner to a security flaw in one of our public-facing websites, and acted with responsibility and ethics in reporting it and providing detail to us to help remediate. We strongly recommend him as an ethical security researcher.
    23 January, 2020
     coliseum555:
Dear fakessh, thank you for responsible disclosure of a XSS vulnerability on a site.

Best regards,
Andrei
    22 January, 2020
     betterexplained:
Thanks for the bug report!
    22 January, 2020
     RohitIn20189381:
Nice work on finding that bug.