1 / 3
Map assets to owners
List stores, purposes, and intended recipients, separating assets without a known owner.
Evidence to retain
Asset, owner, purpose, and review date.
Review exposure and data that remains
Review storage exposure together with the handling of retired environments and data copies.
When to use this guide
Use this when sharing settings and test data are spread across environments or contractors.
Distinguish intended exposure from the scope of data that still needs to be retained.
Where to start
2 / 3
Compare settings with intent
Review operations allowed to users, organizations, and anonymous callers against the intended audience.
Evidence to retain
Configuration references and intended sharing boundaries.
3 / 3
Trace retained copies
Compare test and retired-environment inventories with shutdown or deletion records, keeping unknown copies visible.
Evidence to retain
Retained assets, verified retirements, and unverified stores.
Apply the rules to your environment
Inspect deployed exposure boundaries →
File sharing, administrative interfaces, and contractor-managed storage have different owners.
Compare the asset inventory with exposure settings and separate assets without a known owner.
Inspect nonproduction and data retirement deadlines →
Test copies and retired environments may remain after their original purpose ends.
Compare the target, purpose, owner, and retirement plan in a non-secret inventory.
Read the source incidents
福岡県: data exposure and authorization boundaries →
An application file was published with editing and saving enabled instead of read-only access, retaining applicants’ information. Information about 183 officers from 24 organizations was accessible; actual view counts are unknown.
Awabank: leakage from a retained test environment →
A test environment due for retirement and data deletion remained for AI-related verification. Credential-based unauthorized access led to reported customer and shareholder data leakage.
Selected examples. Each record retains its evidence status, unknowns, and sources.
Connect terms to review questions
- Asset
- A service, store, or administrative identity included in the review. Record its owner and purpose as well as its name.
- Which environment and owner does this asset belong to?
- Open the related inspection rule →
- Secret
- A value granting access, such as an API key or authentication token. Review records should identify it without containing the value.
- Can you identify its purpose, target, and owner without opening its value?
- Open the related inspection rule →
- Audit log
- A record tracing the actor, time, target, and action. Exclude secret values and unnecessary personal information.
- Can you reconstruct the action, and is access to the record controlled?
- Open the related inspection rule →
Keep conclusions within the evidence
- Do not change exposure or delete data during this review.
- Retention appropriateness and removal of every copy, including contractor copies, need separate verification.
Treat intended exposure and justified retention as separate decisions.
References and review dates
- OWASP: Attack Surface Analysis Cheat Sheet ↗
Defining the Attack Surface; Identifying and Mapping the Attack Surface
- OWASP: Logging Cheat Sheet ↗
Which events to log; Event attributes; Data to exclude
Learning review 2026-11-12 · Catalog review 2026-11-09
Give this scope to your AI
Share these two rules and examples without expanding the scope. Checks without evidence remain unverified.
Open this inspection pack →Explore another scenario
Check what was actually deployed
Connect the running version with the external code executed on its way to deployment.
Follow login and the session after it
Review MFA coverage separately from the mechanisms that stop an authenticated session.
Review secret handling without opening values
Map exposure paths and the process for invalidating old credentials after replacement.
Keep user and organization data separated
Connect resource authorization with the boundaries controlling reuse of generated responses.
Trace input into queries and file processing
Follow inputs from entry points to SQL construction and file storage or processing.
Separate the blast radius from recovery
Connect reachable resources with containment and restoration records.
Set AI boundaries before delegating a task
Review destinations, action authorization, and traceable records at the execution boundary.