Bearer

Detects Bearer patterns.

Type

regex

Engine

universal

Confidence

high

Confidence justification

High confidence: structurally constrained pattern with corroborative keyword support reduces false positive rates significantly. Added context gating and exclusion rules improve precision and reduce incidental matches.

Detection quality

Verified

Jurisdictions

global

Regulations

Criminal Code Act 1995 (Cth)

Frameworks

CIS Controls, ISO 27001, NIST CSF, PCI-DSS, SOC 2

Data categories

credentials, security

Scope

specific

Platform compatibility

Purview: Compatible, GCP DLP: Compatible, Macie: Compatible, Zscaler: Compatible, Palo Alto: Compatible, Netskope: Compatible

Pattern

\b[Bb]earer\s+[A-Za-z0-9_-]+\.[A-Za-z0-9_-]+\.[A-Za-z0-9_-]+\b

Corroborative evidence keywords

api key, api_key, apikey, access key, secret key, private key, auth token, authorization, access token, bearer, conn str, connection string, connectionstring, cookie, credential, database, host, JWT, oauth, passphrase (+37 more)

Proximity: 300 characters

Should match

• Bearer eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiIxIn0.reCjcZ0-m3Q — Bearer token with JWT
• bearer eyJhbGciOiJub25lIn0.eyJ0ZXN0IjoiMSJ9.abc — Lowercase bearer with JWT
• Bearer eyJ0eXAiOiJKV1QifQ.eyJpZCI6MSwiYWRtaW4iOnRydWV9.sig — Bearer token with type claim

Should not match

• Bearer single-segment-token — Only one segment instead of three dot-separated
• Token eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiIxIn0.sig — Wrong keyword (Token instead of Bearer)
• Bearer eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiIxIn0 — Only two dot-separated segments instead of three
• template example placeholder record identifier — Template/sample context should be excluded even when anchor words are present

Known false positives

• Authentication-related terminology in software documentation, security training materials, or system architecture descriptions without actual credentials. Mitigation: Require proximity to credential-specific patterns (API keys, connection strings, tokens) rather than general security terminology.
• Code snippets and configuration examples containing credential-related keywords or placeholder values in developer documentation. Mitigation: Check for common placeholder patterns (example.com, localhost, 0000) and documentation file types to reduce false positives from technical writing.

Collections

• Cloud Credentials & API Keys