Windows (2000, XP through 11, Server 2008/2012/2016/2019/2022), Linux (Ubuntu, Kali, Red Hat, CentOS), macOS, Microsoft Exchange (2007/2010/2013/2016/365), Lotus Notes, Gmail, POP3/IMAP, Microsoft Defender for Office 365, Proofpoint, Cisco (IP Phones, ASA, Firepower, Meraki), UniFi, PFSense, Fortinet, Palo Alto, SonicWall, Aruba Networks, F5 Networks, Load Balancers, Cisco Umbrella, Wireshark, OpenVPN, Zscaler, Splunk (Enterprise Security), SIEM tools (QRadar, LogRhythm, Elastic Stack, AlienVault), Symantec Endpoint Protection, McAfee, Sophos, CrowdStrike Falcon, SentinelOne, Carbon Black, Trend Micro, Check Point, Nessus, OpenVAS, Qualys, Rapid7 InsightVM, Microsoft Defender ATP, Tenable.io, FTK (Forensic Toolkit), EnCase, Autopsy, Volatility Framework, Cellebrite, Magnet AXIOM, OSForensics, X-Ways Forensics, Mandiant Advantage, Cuckoo Sandbox, Memoryze, Azure AD, Okta, Duo Security, Ping Identity, CyberArk, SailPoint, BeyondTrust, RSA SecurID, Microsoft Defender for Cloud, Azure Security Center, AWS (GuardDuty, Inspector, CloudTrail, IAM), Google Workspace Security, Cloudflare, Prisma Cloud, CASBs (e.g., Netskope, Symantec), Kubernetes Security, Datto, Unitrends, Egnyte, Backblaze, Veeam, Acronis, Zerto, Azure Backup, AWS Backup, Cohesity, ScreenConnect, LabTech, Ninja RMM, SolarWinds, Grafana, VMware vSphere, Hyper-V, Proxmox, XC PNG, Citrix, AirWatch, Intune, Python, PowerShell, Bash scripting, Ansible, Terraform, SQL, YAML, JSON, CSS, HTML, APIs, Archer GRC, LogicGate, RiskLens, Cybersecurity Maturity Model Certification (CMMC) tools, Compliance Manager GRC, ServiceNow SecOps, ISO 27001 ISMS tools, HITRUST, FedRAMP automation, PCI DSS scanning, Microsoft Office 365, SharePoint, Teams, QuickBooks, Confluence, Slack, Tableau, Microsoft Power BI, CrowdStrike, SentinelOne, Carbon Black, Microsoft Defender for Endpoint, Sophos Intercept X, ESET, Bitdefender, ConnectWise Manage, HEAT, Remedy, Jira, ServiceNow, SolarWinds Service Desk, Ivanti, Deep expertise in implementing NIST CSF, CIS Controls, MITRE ATT&CK, ISO 27001, SOC 2, HIPAA, FedRAMP, PCI DSS, CMMC, Palo Alto Firewalls, Sophos XG, Cisco Umbrella, Barracuda, Check Point, Fortinet FortiGate, Proofpoint, Mimecast, Armis, Claroty, Dragos, Cisco Cyber Vision, Splunk for OT environments, Crestron, GoDaddy, Cloud DNS (Route 53, Azure DNS, Google DNS), SolarWinds Orion, SAAS management platforms, enterprise patch management tools, Metasploit, Burp Suite, Cobalt Strike, BloodHound, Empire, Covenant