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1,246,748 coordinated disclosures
899,027 fixed vulnerabilities
1,584 bug bounty programs, 3,148 websites
28,430 researchers, 1,443 honor badges

JulioCesar | Security Researcher Profile

Security researcher JulioCesar has already helped fix 340 vulnerabilities.

Researcher reputation:  20

Real name:
Júlio César Madeira Soares

About me:
With a keen interest for Information Security, as well as believing that Information Security does not need to be complex, Jlio Csar has started helping website owners identify, patch, and prevent vulnerabilities in their Web Applications, Mobile Applications, and in networks. Our mission is to help website owners and organizations defend against threats of all kinds to make positive changes to the information security industry for a more safe and secure future.

Contact email:
You can contact me via email - [email protected]

PGP: 0x2DEE241C

I encourage you to contact me ASAP so we can work together to quickly protect your users! All communication will be kept privat

Alternative Contacts:
Send me an email through the website contact form:

Certifications & Diplomas:
SANS Security 542

SANS Security 560

SANS Security 660

Experience in Application Security
1-3 years

Award / Bug Bounty I prefer:
Hall of Fame, thank you, written acknowledgement of discovery, Bug Bounty payment in bitcoin, Paypal or gift card, internship, job offer, etc

Halls of Fame:
Julio's profile on hackerone:

Julio's profile on Bugcrowd:

Recommendations and Acknowledgements

@ahaurw01     24 August, 2017
    Twitter ahaurw01 Aaron from Curiosity Media:
Thanks for finding a XSS bug on our site and going to great lengths to provide accurate details about it. Much appreciated!
@FinnJensen     20 February, 2017
    Twitter FinnJensen Finn Jensen from MyPressWire:
Julio Cesar found a Reflected XSS on our site and was quick to respond to emails. Big thanks and keep up the wonderful work.

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:487
Total reports on VIP sites:32
Total patched vulnerabilities:340
Recommendations received:2
Active since:02.02.2017

Open Bug Bounty Certificate

Researcher Certificate

Reported Vulnerabilities

All Submissions VIP SubmissionsFeatured Submissions

No posts in blog yet

  Latest Patched


  Latest Blog Posts

15.02.2022 by sepkatpro
Ultimate XSS Polyglot
11.11.2021 by mistry4592
The Most used Chrome Extensions are Used For Penetration Testing.
08.10.2021 by NNeuchi
How I Found My First Bug Reflected Xss On PIA.GOV.PH(Philippine Information Agency)
26.08.2021 by PyaePhyoThu98
eG Manager v7.1.2: Improper Access Control lead to Remote Code Execution (CVE-2020-8591)
14.07.2021 by Open Bug Bounty
Interview With Open Bug Bounty

  Recent Recommendations

@TiagoGuedesEGo1     20 June, 2022
    Twitter TiagoGuedesEGo1:
shashank_bhure made us aware of several security vulnerabilities that represented security flaws of several degrees and needed to be rectified.

It was a pleasure working with you and I hope we can work again in the future, Thank you!
@TiagoGuedesEGo1     15 June, 2022
    Twitter TiagoGuedesEGo1:
Hardik_850 made us aware of several security vulnerabilities that represented security flaws of several degrees and needed to be rectified.

It was a pleasure working with you and I hope we can work again in the future, Thank you!
@DeBuecher     3 June, 2022
    Twitter DeBuecher:
Peter was of good help
@salmankhan2016     26 May, 2022
    Twitter salmankhan2016:
thanyou security_helper5
@securityhelper5     26 May, 2022
    Twitter securityhelper5:
thank you for report