# Insufficient Logging (CWE-778)

When a security-critical event occurs, the product either does not record the event or omits important details about the event when logging it.

**Stack:** JavaScript

- Prevalence: Alta Frecuentemente explotada
- Impact: Medio Se recomienda revisión
- Prevention: Documentada 3 ejemplos de corrección

**OWASP:** Security Logging and Monitoring Failures (A09:2021-Security Logging and Monitoring Failures) - #9

## Description

Insufficient logging makes it difficult to detect attacks in progress, investigate security incidents, or establish accountability. Logs should capture who did what, when, and from where.

## Prevention

Estrategias de prevención para Insufficient Logging basadas en 1 reglas de detección de Shoulder.

### JavaScript

Replace console.log with a structured logging library like winston or pino

## Warning Signs

- [low] console

## Consequences

- Ocultar actividades
- Eludir mecanismo de protección

## Mitigations

- Registra todos los eventos relevantes para la seguridad (autenticación, autorización, acceso a datos)
- Incluye contexto suficiente (usuario, marca de tiempo, IP, acción, resultado)
- Implementa gestión y monitorización centralizadas de logs

## Detection

- Total rules: 3
- Languages: javascript, typescript, python

## Rules by Language

### Javascript (1 rules)

- **Avoid console.log when logging library exists** [low]: Detects console.log calls when a logging library exists. Only fires when winston, pino, bunyan, or log4js is detected.
  - Remediation: Replace console.log with your logging library.

```javascript
// winston
logger.info('User logged in', { userId });

// pino
logger.info({ userId }, 'User logged in');
```

Learn more: https://shoulder.dev/learn/javascript/cwe-778/avoid-console-log

### Typescript (1 rules)

- **Avoid console.log when logging library exists** [low]: Detects console.log calls when a logging library exists. Only fires when winston, pino, bunyan, or log4js is detected.
  - Remediation: Replace console.log with your logging library.

```javascript
// winston
logger.info('User logged in', { userId });

// pino
logger.info({ userId }, 'User logged in');
```

Learn more: https://shoulder.dev/learn/javascript/cwe-778/avoid-console-log