LLM: Standardized fields for LLM Security and protection [LLM detection rules category]

[susan-shu-c]

Area(s)

area:gen-ai, llm

Is your change request related to a problem? Please describe.

Continuation of #1007

To prevent threats to LLM systems, such as misuse, and to log content filters, proposing standardized fields for the purpose of secure and safe LLM usage. Based on frameworks such as OWASP’s LLM Top 10 and MITRE ATLAS.

An example is that a user may be using various LLM vendors or their own deployments, and wish to log all of them in a standardized manner. Our team has published a blog proposing standardized fields for LLM Security, led by @Mikaayenson.

From previous discussion in #1007, to make this proposal easier to move forward, here's a prioritized, much narrowed-down subset of proposed fields.

The code of our shipped detection rules can be viewed here:

• LLM Threat Hunting Queries
  
• LLM detection rules (Bedrock)

Describe the solution you'd like

Proposing the following fields that are used in our shipped detection rules. The rules detect and prevent DoS, inappropriate usage, LLMJacking.

Category	Field	Type	Description	Rules (details linked in above section)	Comments
Policy Enforcement Fields	gen_ai.policy.name	keyword	Name of the specific policy that was triggered.	* aws_bedrock_guardrails_multiple_violations_in_single_request
	gen_ai.policy.action	keyword	Action taken due to a policy violation, such as blocking, alerting, or modifying the content.	* aws_bedrock_guardrails_multiple_violations_in_single_request * aws_bedrock_high_confidence_misconduct_blocks_detected
	gen_ai.policy.confidence	float	Confidence level in the policy match that triggered the action, quantifying how closely the identified content matched the policy criteria.	* aws_bedrock_high_confidence_misconduct_blocks_detected
Compliance Fields	gen_ai.compliance.violation_detected	boolean	Indicates if any compliance violation was detected during the interaction.	* aws_bedrock_guardrails_multiple_violations_by_single_user
	gen_ai.compliance.violation_code	keyword	Code identifying the specific compliance rule that was violated.	* aws_bedrock_high_confidence_misconduct_blocks_detected
Performance Metric Fields	gen_ai.performance.request_size	long	Size of the request payload in bytes.	* llm_dos_resource_exhaustion_detection

Describe alternatives you've considered

Alternatives are to submit these fields only to ECS, but since the donation of ECS, the standard is to discuss and propose to OTel.

Additional context

No response

[susan-shu-c]

Thanks for the discussion during the working group, will address some feedback and create a PR. Capturing some of the points to answer/address below.

OTel: something already existing for user.id. Can reuse those docs and guidelines around it, as it can be PII.

• https://opentelemetry.io/docs/specs/semconv/attributes-registry/enduser/
• Will need to check if there is documentation on whether it's opt in or not
• this enduser stays the same across sessions

Removing our gen_ai.performance.start_response_time as the pending #955 gen_ai.request.duration has start, end times from which this can be derived.

Our proposal'serror code: perhaps we can reuse the existing error.type (spans/metrics/finish reason exists)

[Edit] Updated the main body of this issue with this feedback.

[susan-shu-c]

Updating with discussions here.

Why gen_ai.performance.request_size vs token size?

gen_ai.performance.request_size: size of actual content which is different from token count. Token counts may depend on how the embedding is generated, which may differ from algorithm to algorithm. From a detections perspective, using request size could be more generic over all LLMs.

Policy vs. compliance fields

"Compliance": aimed more toward external compliance; while "Policy" refers more to a user and organization's internal policies, internal system specific factors (AWS Bedrock guardrails).

Difference between error.code vs. response_finish_reason?

Azure response has separate error.code and innererror.code which isn't the same as stop etc. finish_reason