Cribl Guard combines advanced artificial intelligence with a human-assisted governance layer for detection and mitigation of sensitive data, such as payment card details, passport identifiers, and Social Security numbers, as it traverses Cribl Stream and across your telemetry estate.
Built on Cribl's data engine, Guard ships with over 200 configurable policy rules, teams can review, approve, or override actions in real-time. Detected data is automatically masked or blocked prior to storage, supporting compliance with PCI DSS, HIPM, GDPR, and CCPA not only for data inspected inline, but also for sensitive information surfaced by Al-powered background detection.
The challenge
Sensitive data moving through enterprise telemetry pipelines introduces significant security risk. The inadvertent exposure of personally identifiable information (PII) or any sensitive data can compromise customer trust, invite regulatory sanctions, and create security risks. Equally at risk are system configurations, application secrets, and other business-critical data that adversaries can exploit.
Traditional safeguards often rely on manually tagging sensitive fields, a process that is slow, inconsistent, and error-prone. Regex-based pattern matching adds only limited protection, frequently under-detecting true risks while over-flagging benign content. Without context-aware detection, distinguishing between low-risk identifiers (e.g., hardware serial numbers) and regulated identifiers (e.g., Social Security numbers) becomes unreliable. As data pipelines scale in volume, velocity, and variety, these manual and static approaches fail to provide adequate coverage especially as new sources are added or changed outside of scheduled reviews.
The solution
Cribl Guard strengthens data security by combining advanced Al with a human-assisted enforcement layer. Embedded directly within Cribl Stream, it continuously inspects every event for PII, financial records, government identifiers, and other high-risk data types. Operators can validate, override, or refine actions, ensuring that sensitive content is masked, encrypted, blocked, or rerouted before reaching storage or downstream systems. With prebuilt, customizable rules and support for user-defined policies Guard enables organizations to reduce breach likelihood, enforce compliance, and contain risks at scale.
Cribl Guard also includes Al-powered background detection that continuously scans telemetry for data leakage and policy drift, with flexible model choices to balance fidelity and throughput.
Purpose-built transformer models run on Cribl Workers in your own environment to proactively discover sensitive data while keeping it in your control.
Key capabilities
INTELLIGENT CUSTOMIZED DETECTION
Al-powered analysis accurately identifies sensitive data across geographies and formats, reducing false positives and false negatives.
DYNAMIC RULE RECOMMENDATIONS
Tailors detection rules based on live data and evolving compliance requirements, including mitigating background detection findings with enforced Guard rules.
PROACTIVE ACTION AND REMEDIATION
Detects issues before they become incidents and human-reviewed mitigation ensure precision before masking, encrypting, blocking, or rerouting data in flight.
ADAPTIVE MONITORING AND OPTIMIZATION
Provides deep visibility into data flows while continuously improving rule accuracy, coverage, and performance.
By enforcing controls at the point of ingestion, Cribl Guard prevents data leaks before they occur, simplifies compliance with GDPR, CCPA, HIPAA, and PCI DSS, and reduces the operational burden on security teams.
What makes Cribl Guard different?
REAL-TIME DETECTION AND EASY REMEDIATION
Continuously inspects live data streams, preventing sensitive information from reaching unauthorized or insecure destinations.
PROACTIVE, AI-POWERED RISK DISCOVERY
Intelligent background detection helps organizations move beyond static policy enforcement for sensitive data to proactive discovery by uncovering previously unknown sensitive data before it reaches downstream systems, reducing regulatory exposure and operational risk.
RAPID, FLEXIBLE DEPLOYMENT
Integrates natively with Cribl Stream Pipelines and includes more than 220 prebuilt detection patterns to simplify use.
OPERATIONAL EFFICIENCY
Automates sensitive data handling, reduces manual intervention, accelerates incident response, and optimizes storage costs.
COMPLIANCE AND AUDIT READINESS
Maintains an auditable record of detections and enforcement actions, streamlining adherence to governance, compliance and other regulatory frameworks.
SUPPORTS MULTIPLE DEPLOYMENT MODELS
Cloud, hybrid or on-premises deployments are all supported, providing powerful data scanning to meet varied organizational requirements.
Summary
Sensitive data exposure remains one of the most critical risks facing modern enterprises. Crib! Guard delivers proactive protection by combining Al-driven detection with human-assisted oversight, giving teams real-time visibility, automated remediation, and precise control over sensitive data as it moves through enterprise pipelines.
With context-aware detection, Guard reduces false positives, improves accuracy, and enables immediate enforcement actions such as masking, encryption, blocking, or rerouting. It streamlines compliance with global regulations, enhances operational efficiency, and lowers overhead by automating sensitive data management at scale.
Background detection extends these capabilities with Al by continuously scanning for emerging sensitive data exposures and policy drift, allowing teams to address issues before they lead to incidents or audit findings.
As part ofThe Al Platform for Telemetry, Guard helps prepare telemetry for both humans and Al agents by ensuring data meets governance standards and privacy requirements. CriblGuardtransforms sensitive data risk into operational resilience: preventing leaks, improving efficiency, and maintaining compliance without adding manual complexity.
FAQ: Cribl Guard and sensitive data detection
What is Cribl Guard?
CribI Guard is an Al-powered sensitive data detection and masking solution built into Cribl Stream. It inspects logs and telemetry for PII, financial data, government identifiers, and other high-risk values, and applies masking, blocking, or rerouting actions before data reaches storage or downstream tools.
How does Cribl Guard detect sensitive data in telemetry?
Cribl Guard combines out-the-box rulesets with the option to use Al to detect sensitive data. Out-of-the-box rules can be used for credit cards, Social Security numbers, passport data, and 220+ data types, as well as customized logic. Background detection complements these rules by using Al to continuously scan telemetry for new patterns using purpose-built transformer models running on your Workers.
What is background detection in Cribl Guard?
Background detection is an Al-powered capability in Cribl Guard that continuously analyzes data flowing through Pipelines to uncover sensitive information that may have gone unnoticed. Rather than relying exclusively on static rules, background detection applies purpose-built Al models to identify unknown new patterns of PII, secrets, and regulated data as they emerge. As upstream systems evolve, schemas change, and new applications are onboarded, background detection monitors for drift and emerging risk. When new sensitive data is identified, it is surfaced in a centralized interface. Teams can investigate the finding, dismiss it if appropriate, or quickly create or update Guard rules to prevent future data that matches that pattern from reaching downstream systems such as SIEMs, data lakes, and observability platforms.
How does Cribl Guard help with compliance?
By identifying and controlling sensitive data in telemetry real-time in Worker Groups before it is stored, Cribl Guard supports compliance with PCI DSS, HIPM, GDPR, and CCPA. It maintains an auditable record of detections and actions, helping teams demonstrate effective controls and continuous improvement to auditors and regulators.
