DET0551: Password Guessing via Multi-Source Authentication Failure Correlation
DET0551 is a detection strategy for identifying password guessing by correlating authentication failures from multiple sources. Its practical value is that...
Analyst context for executives and security teams
DET0551 is a detection strategy for identifying password guessing by correlating authentication failures from multiple sources. Its practical value is that password guessing often looks low-severity when viewed one log source at a time, but becomes more material when failures align across identity providers, cloud/IaaS, container, or ESXi-related authentication paths tied to ATT&CK T1110.001.
Executive priority
Security leaders should treat this as an identity resilience and SOC coverage question: can the organization prove it can see repeated failed authentication attempts across the systems that matter, not just in a single directory or application? The business decision value is in validating whether authentication telemetry supports timely investigation, account protection, audit evidence, and incident triage for credential-access activity.
Technical view
This detection strategy detects ATT&CK T1110.001 Password Guessing under Credential Access. Because the strategy object has no official detection text and no specified platforms, teams should anchor validation to the related technique context: authentication attempts against Identity Provider, IaaS, Containers, and ESXi environments where applicable locally. SOC teams should test whether failed logons can be correlated by account, source, target service, time window, and authentication realm across independent telemetry sources.
Likely telemetry
- Identity provider authentication logs, especially failed sign-in events
- IaaS control-plane or access logs showing authentication failures
- Container platform authentication or API access logs where present
- ESXi or virtualization authentication logs where present
- Account lockout, MFA challenge, and conditional access decision logs if collected
Detection direction
- Validate cross-source correlation rather than relying only on per-system thresholds.
- Tune for repeated or iterative failures against one or more accounts, while accounting for benign causes such as forgotten passwords, stale service credentials, misconfigured integrations, or password rotation issues.
- Confirm whether source identity, source address, target account, target service, timestamp, and result fields are normalized consistently enough to support correlation.
- Review blind spots where identity, cloud, virtualization, or container authentication logs are not forwarded to the SOC or have short retention.
- Use the relationship to T1110.001 to prioritize coverage for credential-access monitoring, but do not assume platform coverage because the detection strategy itself does not specify platforms.
Mitigation priorities
- First, ensure critical authentication sources are logged, retained, and available for correlation.
- Next, strengthen account protections that reduce password guessing risk, such as lockout policy, MFA, and conditional access where appropriate to the environment.
- Then, review privileged, cloud, service, and administrative accounts for stronger monitoring and response workflows.
- Finally, document detection logic, telemetry sources, and response procedures as compliance and incident-readiness evidence.
Analyst notes and limits
The supplied ATT&CK object is a detection strategy with external ID DET0551 and a relationship indicating it detects T1110.001 Password Guessing. The main analytic value is the correlation concept: failures from multiple authentication sources can reveal credential-access behavior that may be missed in isolated logs.
The object provides no official description, no official detection text, no tactics, and no platforms for the detection strategy itself. Platform references come only from the related T1110.001 technique. Local environment architecture, log availability, and baseline authentication behavior are required before judging coverage or alert quality.
Password Guessing via Multi-Source Authentication Failure Correlation
No official description is available in the imported ATT&CK source object.
How security teams should use this page
Treat this object as behavior context, not an attribution claim. Validate the related groups, software, data sources, and mitigations against official ATT&CK relationships and your own telemetry before making control-coverage decisions.
Techniques used
This mirrors the MITRE pattern of making group, software, campaign, and technique relationships scannable. Relationship notes come from mirrored ATT&CK relationship text when available.
| Domain | ID | Name | Relationship / procedure |
|---|---|---|---|
| Enterprise | T1110.001 | Password Guessing Sub-technique | This object detects Password Guessing. |
All related ATT&CK context
Object version and sync metadata
The fields below describe the current mirrored snapshot. When Glexia retains multiple ATT&CK source imports, you can open the table to compare the same object across releases (hashes and MITRE timestamps). For MITRE’s own release notes and roadmap, see ATT&CK resources — Updates .
Imported snapshots across ATT&CK releases (1)
| Release | Bundle imported | Object version | Modified | Status | Raw hash |
|---|---|---|---|---|---|
| 19.1 | 1.0 | Current bundle | 69b64f43fda5… |
Mirrored ATT&CK source object
The raw object is retained through the mirrored ATT&CK source bundle and object hash. The raw endpoint returns the exact object from the mirrored bundle when available.
External references and citations
MITRE external references are preserved separately from Glexia analysis so citations remain traceable to their original source records.
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mitre-attack DET0551Open source URL
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