CIP-003 Low Impact Vendor Remote Access: Expert Audit Questions
By Patrick Miller
A deep dive into NERC’s Currently Compliant Podcast Episode 8, extracting every key question being asked about CIP-003-9 vendor remote access. These questions provide a clear view into audit expectations across the ERO Enterprise and highlight where entities are struggling with visibility, control validation, and monitoring of vendor access.
Overview
The North American Electric Reliability Corporation (NERC) “Currently Compliant” podcast continues to provide useful insight into how the ERO Enterprise is thinking about compliance. The podcast “…is intended to be a quick way to bring attention to frequently asked questions and provide clear insights on important compliance topics.” Episode 8, focused on CIP-003-9 Requirement R2 Attachment 1 Section 6 (Vendor Remote Access), is particularly instructive.
What stands out is not just the discussion of controls, but the questions being asked by auditors and subject matter experts across the Regions. These questions are not theoretical. They reflect where entities are struggling, where visibility is lacking, and where audit findings are emerging in this newly effective version (as of 4/1/2026).
This post extracts and organizes those questions into a practical, audit-aligned checklist.
Why These Questions Matter
The value in this discussion is not just in the requirements themselves, but in how they are being interpreted and evaluated in real-world audit and monitoring activities. The questions being asked point directly to where entities are expected to demonstrate control effectiveness, not just intent.
It is a reflection of:
What auditors are probing for
Where controls are assumed but not validated
Where processes exist but cannot be demonstrated
In short, this is where compliance programs are being tested.
Quick Summary: Where Audits Are Focused
| Section | Focus Area | What Auditors Are Looking For |
|---|---|---|
| 6.1 | Determine eVRA | Do you know where vendor access exists, and can you prove it? |
| 6.2 | Disable eVRA | Can you reliably disable vendor access under defined conditions? |
| 6.3 | Detect Malicious Activity | Can you detect and respond to malicious activity tied to vendor access? |
Section 6.1 – Determining Vendor Remote Access
This is fundamentally a visibility problem, and it is where most issues begin. Before you can monitor, control, or disable vendor remote access, you first need to know where it exists, how it is established, and whether it is even understood within your environment.
For many entities, this is not as straightforward as it sounds. Vendor access is often implemented over time, across different technologies, vendors, and asset types, and may not be consistently documented or centrally managed. In addition, it is not limited to interactive user sessions. Depending on your budget and resources, it can also be performed with modern, purpose-built remote access technology, or something cobbled together with existing (already owned) technology that just gets the job done. System-to-system connections, automated processes, and embedded vendor capabilities can all introduce remote access pathways.
If you cannot clearly identify and demonstrate where vendor remote access exists, the rest of Section 6 breaks down. Let’s get into the questions raised by this podcast.
Core Identification & Visibility
How will you evaluate if vendor remote access is permitted or achievable for each asset?
Have you evaluated communications from vendors and the systems they use to access Low Impact BES Cyber Systems?
Have you considered that vendor remote access is not limited to users, but also includes system-to-system access?
Dependencies & Section 3 Alignment
Have you identified any dependencies from CIP-003-9 R2 Attachment 1 Section 3 for determining eVRA?
Have you identified any discrete dependencies required to determine vendor access?
Do you have visibility into all connectivity established under Section 3?
Method Appropriateness & Coverage
Are the methods implemented to determine allowed eVRA appropriate for all assets?
If you have more than one asset, are the methods appropriate for each:
Asset type
Architecture
Vendor
Documentation & Asset Impact
Have you documented the methodology for identifying eVRA?
What Cyber Assets are impacted?
Session Identification & Differentiation
How does your entity distinguish vendor remote access sessions from all other remote access sessions?
Or are all remote access sessions treated the same?
Section 6.2 – Disabling Vendor Remote Access
This is fundamentally an execution and control validation problem. It is not enough to have a defined method for disabling electronic vendor remote access (eVRA). You must be able to demonstrate and prove that it works, consistently and under the conditions where it matters.
In practice, many entities rely on assumed controls such as account disablement or firewall rules, but have not validated how those controls behave across different systems, access paths, vendor implementations, or operational conditions such as incident response or recovery. Disabling access may require a combination of logical and physical actions, and those actions must be clearly defined, coordinated, and repeatable, with some form of defensible evidentiary artifacts.
Just as importantly, disablement is not a static action. It is tied to triggers, timing, and operational awareness. If you cannot clearly define when vendor access should be disabled, how those triggers are monitored, and whether personnel can execute the process correctly, the control is incomplete.
This is where process meets reality, and where many compliance gaps are exposed.
Method Definition
Have you determined the methods for disabling eVRA?
Are those methods appropriate for all Cyber Assets?
Control Types
Are you implementing:
Electronic (logical) controls?
Procedural controls?
Both?
Examples called out in the discussion:
Logical controls such as:
Terminating a firewall session
Disabling an account
Physical controls such as:
Removing network cabling
Powering off devices
Or a combination of both
Process Clarity & Timing
Does your process explain when eVRA should be disabled?
Testing & Validation
Have you tested your plan to disable eVRA to verify that it works as intended?
Training & Operational Readiness
Have all relevant personnel been trained on the process to disable eVRA?
Triggering Conditions
What could trigger the need to disable eVRA?
How do you monitor the triggers that would call for disabling eVRA?
How do you ensure these triggers are performed as expected when required?
Execution Details
Does your procedure terminate:
The session?
The account?
Both?
Cross-Impact Considerations
If eVRA is disabled for Low Impact BES Cyber Systems, will access to Medium or High Impact systems also be disabled?
And vice versa?
Section 6.3 – Detecting Malicious Communications
This is fundamentally a detection and response integration problem. It is not enough to deploy tools that can identify malicious activity. You must be able to demonstrate that those capabilities are effectively positioned, actively monitored, and tied to a defined response process.
In many environments, detection capabilities exist in some form, such as IDS, IPS, or SIEM platforms, but they are not always aligned specifically to vendor remote access pathways. This creates gaps where vendor activity may bypass monitoring or where alerts are generated but not clearly associated with vendor sessions.
Detection also does not stand alone. It must connect directly to incident response. If malicious activity is identified, there must be a clear understanding of how that event is handled, who is responsible, and how it ties back to existing CIP-003 and CIP-008 processes.
If detection is not scoped to vendor access and integrated into response workflows, the control may exist technically, but it is not operationally effective.
Detection Capability
How is detection of malicious communications associated with vendor remote access occurring?
What methods or tools are being used to detect inbound and outbound malicious communications?
Integration with Response
Will your CIP-003 and/or CIP-008 Cyber Security Incident Response Plan need to be updated to properly respond to detected events?
Identity, Access, and Logging (Cross-Cutting Expectations)
While not always framed as direct questions, these are clearly embedded expectations.
What methods are used to verify vendor identity (authentication)?
Is multi-factor authentication implemented where feasible?
When does authorization occur, and how is it controlled?
Is access limited to least privilege?
What logging and accounting measures are in place?
Can you log vendor authentication and activity?
Can those logs be retained and tied back to a specific vendor?
What This Signals for Compliance Programs
Taken together, these questions point to a consistent set of challenges across entities. This is less about interpreting the requirement and more about how controls are implemented, validated, and demonstrated in practice.
Section 3 and Section 6 Are Directly Linked
Vendor remote access under Section 6 does not exist in isolation. It is built on top of the connectivity established under Section 3.
If there is not clear visibility into inbound and outbound electronic access, it becomes significantly more difficult to determine where vendor access exists, how it is being used, and whether it is appropriately controlled. Many of the questions being asked ultimately trace back to this dependency.
Processes Must Be Demonstrable
Having a documented process is no longer sufficient on its own. The expectation is that controls can be shown to be implemented, consistently applied, and effective across different systems and scenarios.
This includes being able to explain how the process works, produce evidence that it is being followed, and demonstrate that it achieves the intended outcome.
Vendor Remote Access Remains a Persistent Risk Area
The focus on vendor remote access reflects a broader and ongoing issue. Third-party access continues to introduce complexity into otherwise controlled environments.
Common challenges include:
Incomplete visibility into remote connections
Inconsistent authentication and authorization practices
Limited insight into vendor activity once access is established
Access that persists longer than intended or is broader than necessary
These are not new issues, but they remain areas where gaps are frequently identified.
Testing and Validation Are Critical
A recurring theme across the discussion is the importance of validation. Controls that have not been tested under realistic conditions may not perform as expected when needed.
This includes verifying that:
Vendor access can be identified
Access can be disabled when required
Malicious activity can be detected and acted upon
Without this level of validation, controls may exist in documentation, but not in practice.
Closing Thought
The underlying message is straightforward, but important. The focus is shifting from whether controls exist to whether they are understood, implemented, and demonstrably effective.
That shift is not happening in isolation. It aligns directly with the broader evolution of the Compliance Monitoring and Enforcement Program (CMEP). As outlined in CMEP Version 8, the standards themselves are not what changed. What changed is how they are applied, evaluated, and defended. Oversight is becoming more structured, more consistent, and more reliant on professional judgment tied to documented risk and control effectiveness.
At the same time, the move toward an internal controls-driven model reinforces this direction even further. Internal controls are no longer a separate or periodic evaluation activity. They are now continuously assessed across all CMEP interactions and used to determine residual risk, shape Compliance Oversight Plans, and influence how deeply an entity is monitored.
Taken together, this means that questions like the ones outlined above are not just audit prep. They are becoming the mechanism through which regulators evaluate whether a compliance program is sustainable, repeatable, and aligned to risk.
In that context, the distinction becomes critical. It is no longer about having controls on paper. It is about being able to explain them, demonstrate them, and show that they work under real conditions.
