I employ a combination of automated scanning tools and manual testing techniques to identify vulnerabilities. Tools like Nessus, Qualys, and OpenVAS are used for initial scans, followed by manual verification to reduce false positives. I also stay updated with the latest CVEs and threat intelligence to ensure comprehensive coverage. The approach is tailored based on the environment's complexity and the organization's risk appetite, ensuring a balance between thoroughness and efficiency.

Prioritization is based on the CVSS score, exploit availability, and the asset's criticality to the business. High-severity vulnerabilities with active exploits targeting critical systems are addressed first. I also consider the potential impact on confidentiality, integrity, and availability, alongside any compliance requirements. This risk-based approach ensures that resources are allocated effectively to mitigate the most significant threats promptly.

Once, I identified a zero-day vulnerability in a web application that allowed unauthorized admin access. I immediately documented the finding, including steps to reproduce, and reported it to the IT security team with a recommended patch. I also assisted in implementing temporary mitigations until the patch was deployed. Communication was key, ensuring stakeholders understood the risk and the urgency of the response, which prevented potential exploitation.

Comprehensiveness is achieved by covering all layers of the IT environment, from network to application levels, and including both internal and external perspectives. I use a variety of tools and techniques, such as penetration testing and configuration reviews, and cross-reference findings with multiple sources. Regularly updating assessment criteria to reflect new threats and technologies ensures that no critical area is overlooked.

Compliance frameworks like PCI DSS, HIPAA, and ISO 27001 provide baseline requirements for vulnerability management. My assessments ensure that these standards are met, identifying gaps that could lead to non-compliance. However, I go beyond compliance to address risks that may not be explicitly covered by regulations, aligning security practices with both legal obligations and the organization's broader risk management strategy.