Mohamed Sameer

Detail-oriented Cybersecurity Specialist with hands-on experience in cyber defense, vulnerability assessment, SIEM operations, and bug bounty hunting. Skilled in identifying real-world security issues and improving organizational risk posture.

Bug Bounty & Security Research at HackerOne & Personal Projects (2024-01 – Present)

Self-driven security research and bug bounty hunting

• Identified and reported multiple high-impact vulnerabilities including Subdomain Takeover, DOM-Based XSS, and sensitive data exposure.
• Conducted responsible disclosure and coordinated with organizations to remediate security issues.
• Performed penetration testing on web applications and APIs, strengthening security posture for target organizations.
• Enhanced knowledge of OWASP Top 10 threats, cloud security, and real-world attack scenarios.

Cybersecurity Specialist Intern at Infosec4TC (2022-07 – 2023-01)

• Configured and optimized Kaspersky Endpoint Security across multiple systems to ensure real-time protection and compliance.
• Secured Windows Server environments by enforcing strong password policies, audit settings, and access control through Group Policy Objects (GPOs).
• Managed user accounts, roles, and permissions in Active Directory, improving access control and reducing unauthorized access risks.
• Conducted regular vulnerability assessments using Nessus, identifying and remediating critical vulnerabilities across IT assets.
• Utilized Splunk for proactive log monitoring, detecting and reporting suspicious activity for incident response teams.
• Deployed and maintained ManageEngine Data Loss Prevention (DLP) to monitor and block unauthorized data transfers, ensuring regulatory compliance.

Bachelor of Science in Electronic Commerce (Cybersecurity Focus) – Tiba Academy (2026-01)