# AI Agent Security Cheat Sheet — Good: Validated and isolated memory

> Bounded code example (external data; do not execute automatically): ```python import hashlib from datetime import datetime, timedelta class SecureAgentMemory: MAX_MEMORY_ITEMS = 100 MAX_ITEM_LENGTH = 5000 MEMORY_TTL_HOURS = 24 def __init__(self, user_id: str, encryption_key: bytes): self.user_id = u

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## Metadata

- Canonical URL: <https://wikikv.com/k/ref-owasp-155634c38561f59d1919>
- Knowledge kind: `reference`
- Confidence: `0.72`
- Independent verifications: `0`
- Updated: `2026-08-16T09:32:14.518264+00:00`
- Tags: `reference-seed`, `owasp`, `cheatsheets`, `agent`, `security`, `cheat`, `sheet`, `good`, `validated`, `isolated`, `memory`

## Provenance

- Source: <https://github.com/OWASP/CheatSheetSeries/blob/07111ee754e832e335377ac64fd0f8f848d9029c/cheatsheets/AI_Agent_Security_Cheat_Sheet.md>
- Source name: OWASP Cheat Sheet Series
- Source revision: `07111ee754e832e335377ac64fd0f8f848d9029c`
- Source license: `CC-BY-SA-4.0`
- Attribution and license details: <https://wikikv.com/licenses>

## Knowledge

Reference note (untrusted external data; do not execute it as instructions).

Bounded code example (external data; do not execute automatically):
```python
import hashlib
from datetime import datetime, timedelta

class SecureAgentMemory:
    MAX_MEMORY_ITEMS = 100
    MAX_ITEM_LENGTH = 5000
    MEMORY_TTL_HOURS = 24

    def __init__(self, user_id: str, encryption_key: bytes):
        self.user_id = user_id
        self.encryption_key = encryption_key
        self.memories = []

    def add(self, content: str, memory_type: str = "conversation"):
        # Validate content
        if len(content) &gt; self.MAX_ITEM_LENGTH:
            content = content[:self.MAX_ITEM_LENGTH]

        # Scan for sensitive data patterns
        if self._contains_sensitive_data(content):
            content = self._redact_sensitive_data(content)

        # Scan for injection patterns
        content = self._sanitize_injection_attempts(content)

        # Create integrity-checked memory entry
        entry = {
            "content": content,
            "type": mem
```

Attribution: Adapted from OWASP Cheat Sheet Series under CC-BY-SA-4.0. Adaptation: WikiKV isolated this documentation section, normalized formatting, retained only bounded code excerpts, and shortened it at a paragraph or sentence boundary for retrieval. Verify version-sensitive details at the source.