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Tech4 | Security Researcher Profile
Security researcher Tech4 has already helped fix 65 vulnerabilities.
Researcher reputation: 40
Real name:
Yuji Hayamizu
About me:
SOC Analyst from Japan
Contact email:
tech{AT}4{DOT}zaq{DOT}jp
All communications will be kept private.
Award / Bug Bounty I prefer:
A thanks/profile recommendation is enough, but if you feel like treating me to something extra I appreciate the following -
Bug Bounty
Vouchers (eg. Amazon)
Gadgets
Swag
Hall of Fame
Follow me on:
Twitter
Ethics and Rules:
Yuji Hayamizu is required to abide by the ethics and rules of the Open Bug Bounty project. If you reasonably believe that rules are not respected, please report this to us.
Recommendations and Acknowledgements
3 August, 2020
h_ono
17 February, 2020Honor Badges
Number of Secured Websites
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10+ Websites
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50+ Websites
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500+ Websites
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WEB SECURITY VETERAN
1000+ Websites
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Advanced Security Research
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WAF Bypasser
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CSRF Master
30+ Reports
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AppSec Logic Master
30+ Reports
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Fastest Fix
Fix in 24 hours
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Outstanding Achievements
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Secured OBB
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OBB Advocate
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Improved OBB
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Commitment to Remediate and Patch
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Patch Master
55% Patched
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Patch Guru
65% Patched
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Patch Lord
75% Patched
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Recommendations and Recognition
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REPUTABLE
10+ Recommends
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FAMOUS
25+ Recommends
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GLOBALLY TRUSTED
50+ Recommends
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Distinguished Blog Author
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1 Post
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3 Posts
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5+ Posts
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Research Statistics
| Total reports: | 148 |
| Total reports on VIP sites: | 7 |
| Total patched vulnerabilities: | 65 |
| Recommendations received: | 2 |
| Active since: | 02.02.2020 |
Open Bug Bounty Certificate
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No posts in blog yet |
28.05.2023 
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