Herby Amertis

About Herby Amertis

As a Cybersecurity Support Analyst with hands-on experience in Vulnerability Management…

Experience

1. Cybersecurity Support Engineer

   Afco-Hr

   Mar 2020 — Present · Miami, FL, US

   Vulnerability Management:Conducted vulnerability scans, provided detailed reports, and implemented PowerShell-based remediation\'s, contributing to a 100% reduction in critical, 90% in high, and 76% in medium vulnerabilities for the server team.Performed vulnerability assessments and risk prioritization using Tenable across Windows and Linux environments.Executed secure configurations and compliance audits (DISA STIG) with Tenable to meet industry standards.Automated remediation processes and STIG implementations using PowerShell to address critical vulnerabilities.Deep understanding of the “soft” side of Vulnerability Management: rapport, trust, transparency, and business need.Security Operations:Performed threat hunting with EDR, detecting IoCs from brute force attacks, data exfiltration, and ransomware.Designed, tested, and published advanced threat hunting scenarios for incident response tabletop exercisesDeveloped custom detection rules in Microsoft Defender for Endpoint to automate isolation and investigation of compromised systems.Reduced brute force incidents by 100% by implementing inbound NSG/firewall rules to limit Internet exposure.Created Microsoft Sentinel dashboards to monitor logon failures and malicious traffic using threat intelligence.Experienced with KQL (similar to SQL/SPL) which I used to query logs within the SIEM and EDR platform.