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Security Hardening Report v1

MemoryWell SDK · Feb 21 2026 · Compiled after Stage 6 completion

29/29

Clean Sweep — All Tests Passing

6 suites · 7 threats modelled · 10 endpoints admin-gated · Step 7 complete

Pipeline ✓
Fail-Closed ✓
Idempotency ✓
Security ✓
Two-Tenant ✓
Live Security Audit

Calls mwSecurityAudit against live production data — admin only

Test Suite Results
Stage 1Full Pipeline (Happy Path)
5/5

Store → Extract → Ingest → Search → Recall — all green

Stage 2Fail-Closed Assertions
7/7

Every invalid input correctly rejected; bad tiers sanitised, not crashed

Stage 3Idempotency
2/2

Double-submit returns same ID or pending (same operation); no duplicates

Stage 4Cross-Tenant Security (Basic)
3/3

Foreign bottle ID recall/extract blocked; list scoped to caller's tenant

Stage 5Concurrency & State Machine
4/4

Parallel stores produce unique addresses; no stuck ops under hammer

Stage 6Two-Tenant Proof (Deep)
8/8

Tenant A seeds real data; Tenant B attacks all 7 vectors; zero data leaked; bottle intact after all attacks

Threat Model
T1
Cross-tenant data read
MITIGATED

Vector: Recall / List / Search with foreign ID

Control: All endpoints derive tenant_id from auth token — never from caller payload

T2
Cross-tenant data write / mutation
MITIGATED

Vector: Extract / Ingest / Embed on foreign bottle_id

Control: Ownership verified against MemoryBottle.app_id === tenant_id before any mutation

T3
Duplicate / race-condition data corruption
MITIGATED

Vector: Concurrent double-submit of same idempotency key

Control: Canonical key + lease election; loser returns pending, winner executes

T4
Input injection / oversized payload
MITIGATED

Vector: Empty conversation [], 6MB content, >128-char IDs

Control: Input validation gate at function entry — rejects before any DB write

T5
Privilege escalation via batch/admin endpoints
MITIGATED

Vector: Non-admin calling nukeTestBucket, mwSecurityAudit, stage3FinalScan, hammer tests

Control: role !== 'admin' → 403 FORBIDDEN gate added in Step 7

T6
Audit trail tampering
MITIGATED

Vector: Modifying or skipping OpLedger writes

Control: OpLedger is append-only write path; never updated after creation

T7
Stale / stuck operation lock
MITIGATED

Vector: Winner crashes mid-flight, lease never released

Control: Lease expiry (10s) + state machine integrity audit detects and flags stuck ops

Security Design Principles
Admin-Gated Endpoints

MemoryWell SDK Security Hardening Report v1 · Generated Feb 21 2026 · Scott D'Almeida