Krayin is a Laravel-based customer relationship management system. A count-only ZoomEye query returned 0 application matches and 170 title matches on 2026-11-04. The title result is small enough to review as a list, but it is not proof that each page belongs to a live CRM deployment.
Measurement details
The application query was app="Krayin CRM" and the title query was title="Krayin". Both used sub_type=all, page 1, and pagesize 1 at 07:49 Asia/Shanghai. The returned totals were 0 and 170. The application query used the full product name; a different vendor-maintained fingerprint could produce a different result. That is why the article reports the exact dork rather than treating zero as an absolute fact.
Krayin's developer documentation describes a REST API with token authentication, typically through Laravel Sanctum. It also documents an API explorer and routes for leads, contacts, products, quotes, activities, and settings. These are business records. An API token for one integration can be more valuable than the login page because it may be usable without a browser session.
Define the data boundary
Separate the public lead form from the administrative CRM. A marketing site may legitimately accept a lead from an unauthenticated visitor. That form should not expose existing contacts, internal notes, or quote records. Review the API module separately from the core application because each module may have its own routes and authorization checks.
Use named integration accounts instead of shared administrator credentials. Scope tokens to the minimum entities and actions. Disable an integration and confirm its token stops working. Rotate tokens after a personnel change and keep a record of the token owner. Do not put a bearer token in a browser URL, a log message, or a public JavaScript bundle.
Review deployment defaults
Record the application version, the API module version, the web server, and the database backend. Confirm that the debug setting is off in production. Check that error pages do not return stack traces, environment values, or database queries. Review file uploads and public storage paths. A CRM attachment may contain a contract, an identity document, or a support export.
Put administrative routes behind an access layer that is appropriate for the team. If the CRM is intentionally public, rate-limit login and API requests and monitor failures. Keep audit logs for record export, role changes, token creation, and bulk updates. Set a retention policy that matches the sensitivity of customer data.
Turn the count into a review list
For each title match, capture the certificate name, hostname, page title, and redirect chain. Compare the host with the organization's known domains. If the host is owned, ask the application owner whether the instance requires authentication and whether the API is enabled. If it is not owned, record it as a third-party observation and do not probe it beyond the public page.
The zero application count and 170 title count are both useful. The first shows that the exact app value was not found, while the second identifies a naming footprint. Together they support a cautious inventory, not a vulnerability statement.