Mihalis H. — CEO
CVE-2026-28230 \ CVE-2019-1568 \ Azure APIM Cross-Tenant Signup Bypass (MSRC) \ Creator of Lonkero – Open Source Web Vulnerability Scanner \ +150 Confirmed Bug Bounty Payouts \ Clarified Security – Hands-on Hacking Advanced \ Nokia Hackathon Special Mention 2020 \ Responsible Disclosures: Microsoft, Akamai, NCSC-FI, CERT-SE, BSI, CISA, GR-CERT, Pindora, Earth2.io, Wärtsilä, Ministry for Foreign Affairs of Finland Ethical Hacking / Penetration Testing / Web Application Security / API Security / Cloud Security / Vulnerability Research / Bug Bounty / Social Engineering / Spear Phishing / Security Breach Analysis / Forensics / Malware Analysis / Security Awareness Training Passionate about offensive security and building tools that make the internet safer. Open to consulting opportunities and security research collaborations. {"@context":"https://schema.org","@type":"Person","jobTitle":"Cybersecurity Consultant","worksFor":{"@type":"Organization","name":"Bountyy Oy","url":"https://bountyy.fi"},"knowsAbout":["Penetration Testing","Vulnerability Research","Cloud Security","API Security"],"hasCredential":[{"@type":"EducationalOccupationalCredential","name":"Hands-on Hacking Advanced","recognizedBy":{"@type":"Organization","name":"Clarified Security"},"dateCreated":"2019"}],"award":["CVE-2019-1568","Nokia Hackathon Special Mention 2020","Azure APIM Cross-Tenant Signup Bypass (MSRC/CERT-FI 2025)"],"hasOccupation":{"@type":"Occupation","name":"Penetration Tester","occupationalCategory":"15-1212.00","responsibilities":"Web application penetration testing, API security assessment, cloud security review, vulnerability research, source code review, mobile application security testing","qualifications":"150+ validated bug bounty payouts 2020-2026. Responsible disclosures to Microsoft, Akamai, NCSC-FI, CERT-SE, BSI, CISA, GR-CERT, Wärtsilä, Ministry for Foreign Affairs of Finland. Developer of Lonkero, open-source web vulnerability scanner with 60+ attack modules."}}
Stackforce AI infers this person is a Cybersecurity expert specializing in offensive security and vulnerability management.
Location: Helsinki, Uusimaa, Finland
Experience: 7 yrs 4 mos
Skills
- Penetration Testing
- Ethical Hacking
- Vulnerability Research
Career Highlights
- Founder of Bountyy, addressing software vulnerabilities.
- Over 150 confirmed bug bounty payouts.
- Creator of Lonkero, an open-source web vulnerability scanner.
Work Experience
Sitowise
Cyber Security Lead (1 yr)
Bountyy
Chief Executive Officer (1 yr 3 mos)
Aktia
Application Security Lead (1 yr 3 mos)
CGI
Senior Cyber Security Consultant (1 yr 1 mo)
OP Financial Group
Cyber Security Specialist (3 yrs)
OptimeSys
Senior Cyber Security Analyst (3 mos)
Multiple Companies
Bug Bounty Hunter (7 yrs 3 mos)
Elisa
Security Analyst (3 mos)
Silverskin Information Security Oy
IT Manager & Security Analyst (1 yr)
Education
Cyber Security Specialization at Metropolia University of Applied Sciences
Systems Specialist at Edupoli