PSIRT: Establishing a Product Security Incident Response Team
A Product Security Incident Response Team (PSIRT) is the organizational function responsible for receiving, coordinating, and responding to security vulnerability reports and incidents affecting a manufacturer's products. It is the operational backbone behind vulnerability management and CRA reporting obligations, bringing together engineering, security, legal, and communications functions around a defined process. PRAETORIO helps embedded and industrial manufacturers establish a PSIRT function sized appropriately for their organization, or mature an existing one to meet growing regulatory and customer expectations.
A PSIRT that exists only on paper fails at the moment it matters most; the goal is a function that has actually been exercised before a real vulnerability report arrives.
What a PSIRT Does
A PSIRT typically owns or coordinates the following functions:
- Vulnerability report intake: providing a defined channel (e.g. a security contact address or disclosure page) through which external researchers, customers, and internal teams can report vulnerabilities.
- Triage and coordination: assessing incoming reports for validity and severity, and coordinating the engineering teams needed to investigate and remediate.
- Incident response: managing the organization's response when a vulnerability is being actively exploited or a security incident occurs.
- Disclosure management: coordinating responsible disclosure timelines with reporters, and managing public communication once a fix is available.
- Regulatory reporting: ensuring vulnerability and incident reports required by regulation (such as the CRA's ENISA and CSIRT reporting obligations) are filed within required timelines.
- Metrics and process improvement: tracking response times, recurring root causes, and process effectiveness to improve the function over time.
Why a PSIRT Matters
It gives external researchers somewhere to go. Without a defined PSIRT and disclosure channel, a security researcher who finds a vulnerability has no clear, safe way to report it responsibly: increasing the chance it becomes public before a fix exists.
It is what makes CRA reporting timelines achievable. The 24-hour early warning and 72-hour full notification obligations under the Cyber Resilience Act require a function that is already staffed, informed, and ready to act: not one assembled after a vulnerability is discovered.
It coordinates functions that don't naturally talk to each other. A vulnerability report often needs engineering, security, legal, and communications input simultaneously; a PSIRT gives that coordination a defined owner instead of leaving it to ad hoc escalation.
It protects customer and OEM relationships. Suppliers with a visible, functioning PSIRT are better positioned in OEM security audits and less likely to damage trust when a vulnerability does surface.
Its absence is itself a finding. In supplier security assessments and regulatory reviews, the lack of a defined vulnerability response function is increasingly treated as a gap on its own, independent of any specific incident.
Our Approach
PRAETORIO helps establish or mature a PSIRT function through a structured program:
- Current-state assessment: review how vulnerability reports and security incidents are currently handled, and identify what already exists informally.
- Scope and charter definition: define the PSIRT's scope (which products, which types of reports), authority, and its relationship to existing engineering and security functions.
- Intake channel setup: establish a defined disclosure channel (security contact, disclosure policy page) for external researchers and customers.
- Process and playbook development: define the triage, escalation, remediation coordination, and disclosure processes the PSIRT follows for a typical report.
- Regulatory reporting integration: align PSIRT processes with applicable reporting obligations, including CRA Article 14 timelines to ENISA and national CSIRTs.
- Roles and staffing model: define who performs PSIRT functions, whether a dedicated team, a virtual team drawn from existing staff, or a hybrid model appropriate to the organization's size.
- Tabletop exercises: run a simulated vulnerability report or incident through the defined process to identify gaps before a real one arrives.
- Metrics and continuous improvement: establish tracking for response times and recurring findings to mature the function over time.
Deliverables
- PSIRT charter and scope definition
- Vulnerability disclosure policy and public-facing contact channel
- Triage, escalation, and remediation coordination playbooks
- Regulatory and customer reporting timeline mapping
- Roles and staffing model recommendation
- Tabletop exercise design and facilitation
- PSIRT metrics and process improvement framework
How PRAETORIO Can Support Your Team
- First-time PSIRT establishment, for manufacturers with no defined vulnerability response function today.
- PSIRT maturity assessment, benchmarking an existing function against industry practice and regulatory expectations.
- CRA-aligned process design, ensuring PSIRT playbooks meet the specific timelines the Cyber Resilience Act requires.
- Disclosure policy and channel setup, giving external researchers a clear, safe way to report vulnerabilities.
- Tabletop exercise facilitation, testing an existing or newly designed PSIRT process against a realistic scenario.
- Virtual PSIRT staffing models, designing a function that draws on existing engineering and security staff rather than requiring a new dedicated team, appropriate for smaller organizations.
Typical Use Cases
- A manufacturer with no defined vulnerability response process, prompted by a customer audit finding or an unplanned vulnerability report.
- An organization building CRA-aligned reporting capability ahead of the September 2026 deadline.
- A company that has received vulnerability reports through informal channels (a generic support inbox, individual employee contacts) and needs a proper disclosure process.
- A supplier needing to demonstrate a functioning PSIRT as part of OEM security qualification.
- An organization with a PSIRT that exists on paper but has never been tested, seeking a tabletop exercise to validate it.
- A smaller manufacturer needing a right-sized, virtual PSIRT model rather than a dedicated team it cannot staff.
Why PRAETORIO
- Embedded systems and automotive engineering background, so PSIRT playbooks reflect how vulnerabilities actually get remediated in firmware and hardware-adjacent products, not just typical IT security incident response.
- More than 15 years of experience across embedded C/C++, AUTOSAR, and power electronics, with direct exposure to the engineering coordination a real vulnerability response requires.
- Practical experience connecting PSIRT process design to SBOM and vulnerability management workstreams, rather than treating PSIRT as an isolated policy document.
- Right-sized process design: a PSIRT built to match the organization's actual size and structure, not a template built for a much larger company.
Related Services
- Vulnerability Management: the process PSIRT coordinates and operates
- SBOM Consulting: the component inventory that informs vulnerability applicability
- Cyber Resilience Act Consulting: the regulatory driver for PSIRT reporting timelines
- CRA Compliance: PSIRT as part of the full compliance program
- Cybersecurity Engineering: the overall cybersecurity engineering practice
- Embedded Cybersecurity: broader embedded and automotive cybersecurity engineering
FAQ
What is a PSIRT?
A Product Security Incident Response Team (PSIRT) is the organizational function responsible for receiving, triaging, coordinating remediation for, and disclosing security vulnerabilities and incidents affecting a manufacturer's products.
Does the Cyber Resilience Act require a PSIRT?
The CRA does not mandate a specific organizational structure called a "PSIRT," but it requires manufacturers to have a vulnerability handling process and to meet defined reporting timelines to ENISA and national CSIRTs. In practice, a PSIRT function is the most effective way to reliably meet those obligations.
Does a PSIRT need to be a dedicated, full-time team?
No. Many organizations, particularly smaller manufacturers, operate a "virtual" PSIRT that draws on existing engineering, security, and legal staff who take on PSIRT responsibilities as needed, rather than a standalone dedicated team.
What is a vulnerability disclosure policy?
A vulnerability disclosure policy is a public-facing document that tells security researchers and customers how to report a vulnerability, what response timeline to expect, and the manufacturer's approach to coordinated disclosure. It is typically the primary entry point into a PSIRT's process.
How do we test whether our PSIRT process actually works?
A tabletop exercise: running a simulated vulnerability report or incident through the full response process with the people who would actually handle it: is the standard way to identify gaps in a PSIRT process before a real report arrives.
Can PRAETORIO help if we already have some incident response capability?
Yes. Many engagements start with an existing IT security incident response function that has not been extended to cover product vulnerabilities specifically, and focus on adapting or extending it into a proper PSIRT scope.
How does PSIRT relate to vulnerability management?
Vulnerability management is the end-to-end process of identifying, triaging, remediating, and reporting vulnerabilities. A PSIRT is the organizational team or function that typically owns and operates that process.
Need to Establish or Mature Your PSIRT Function?
PRAETORIO can support your team from initial scope and charter definition through disclosure channel setup, playbook development, and tabletop testing. Contact us to discuss your organization's PSIRT needs.