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1,001,551 coordinated disclosures
626,420 fixed vulnerabilities
1,345 bug bounty programs, 2,693 websites
23,265 researchers, 1,317 honor badges

jark | Security Researcher Profile


Security researcher jark has already helped fix 31 vulnerabilities.



Researcher reputation:  20

Real name:
Jose Arquillo

About me:
Software Engineer, Independent Security Researcher, Spain based.

Contact me for information on what I have found on your website and I will try to respond as quickly as possible.

Contact email:
[email protected]

Alternative Contacts:
https://twitter.com/jose_arquillo

Certifications & Diplomas:
-Bachelor Degree in Computer Engineering
-Master Degree in Cybersecurity

Experience in Application Security
< 1 year

Award / Bug Bounty I prefer:
-Recommendations here on OpenBugBounty
-Recommendations on Twitter
-Hall of Fame

If you feel generous:
-Tshirt
-Swag
-Paypal ([email protected])

Follow me on:
Twitter

Recommendations and Acknowledgements

@UUCSIRT     20 September, 2019
    Twitter UUCSIRT Hans Liss from Uppsala university:
Thank you very much for the report!

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:208
Total reports on VIP sites:20
Total patched vulnerabilities:31
Recommendations received:1
Active since:13.06.2019

Reported Vulnerabilities

All Submissions VIP Submissions




No posts in blog yet










  Latest Patched

 14.06.2021 cardiff.ac.uk
 14.06.2021 redatam.sbs.gov.ws
 14.06.2021 portal.dm.gov.ae
 14.06.2021 lms.era.gov.kh
 14.06.2021 klerk.ru
 13.06.2021 sparknotes.com
 13.06.2021 baxton.me
 13.06.2021 houzz.in
 13.06.2021 emcdda.europa.eu
 12.06.2021 comunebivongi.gov.it

  Latest Blog Posts

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
11.04.2021 by Open Bug Bounty
Better Notifications Mechanism

  Recent Recommendations

@darione90     14 June, 2021
    Twitter darione90:
Many thanks for finding and reporting an XSS vulnerability on our website!
@darione90     13 June, 2021
    Twitter darione90:
Many thanks for helping us fixing a XSS vulnerability on our website!
@darione90     12 June, 2021
    Twitter darione90:
Many thanks to 0xrocky for finding a vulnerability on our website!
@infoclimat     11 June, 2021
    Twitter infoclimat:
I can confirm k0t has found an XSS vulnerability on our website, that was fixed quickly after. Thanks for the finding.
@infoclimat     10 June, 2021
    Twitter infoclimat:
Taha has found several XSS vulnerabilities, and kindly reported them to our team.