How GISA Validates Exploitable Vulnerabilities Across Its Network

Michael Nessband, Unit Director for Information Security at GISA, explains how Pentera enables continuous security validation across a complex global IT outsourcing environment. Facing an increasing volume of vulnerabilities and limited human capacity to validate them, GISA needed a way to move faster without sacrificing accuracy. Traditional approaches made it difficult to confirm exploitability, validate detection capabilities, and prioritize remediation effectively.

With Pentera, GISA can continuously run attack emulations across its entire network, proving which vulnerabilities are exploitable and verifying that security controls are working as expected. The platform enables advanced use cases such as organization-wide password auditing and ransomware scenario testing, while significantly reducing manual workload. Pentera’s reporting also improved collaboration across teams by providing clear mitigation guidance, making it easier to translate findings into actionable remediation plans. As a result, GISA saves substantial time and cost while gaining confidence that its defenses are actively validated, not just assumed.