Joshua opeyemi

I am a Junior Blue Team / SecOps professional with over five years of defensive IT operations experience and strong cybersecurity training. I focus on threat detection, incident response, system hardening, and vulnerability management to protect organisational assets.

In my current role as Senior IT Systems Engineer, I execute defensive security operations including threat detection, incident triage, containment, and monitoring of endpoint and identity controls across Windows and macOS environments. I investigate authentication attacks, privilege escalation attempts, lateral movement and data exfiltration within Microsoft 365 and Azure AD infrastructures.

I have led hands-on technical projects such as forensic analysis of Android device images that uncovered evidence of cyberfraud, and network/service enumeration labs using Kali and Windows VMs with Nmap and smbclient. I document incidents with technical indicators and defensive recommendations to improve security posture.

I bring practical skills in endpoint protection, SIEM concepts, identity and access security, patch and vulnerability remediation, basic scripting for automation, and user-focused security awareness. I collaborate with security teams on incident response, threat hunting, and implementing controls to reduce attack surface.