Acuvity (now Proofpoint)
https://acuvity.ai/ai-runtime-security/
Runtime enforcement targeting memory poisoning, unauthorised execution, identity spoofing per the OWASP LLM threat list. Visibility/control over MCP servers and locally-installed AI tools — the infrastructure layer where memory is most exposed.
At a glance
- Type
- MCP / Shadow-AI runtime enforcement
- Tier
- T1
- Created
- 2023 (founded by cybersecurity veterans; acquired by Proofpoint Feb 12 2026)
- Latest release
- not applicable — not OSS
- License
- not applicable — not OSS
- GitHub
- not applicable — no GitHub repo
- Pricing
- enterprise pricing via Proofpoint (not public); contact sales
- Funding
- no public funding data found — pre-acquisition private company; acquired by Proofpoint for undisclosed amount
Taxonomy
- storage
- n/a
- retrieval
- agentic
- persistence
- session
- update
- read-only
- unit
- prompt
- governance
- auditable
- conflict
- n/a
When to use
Optimised for: governance + compliance + audit + adversarial hardening
Anti-fit: not for hobbyist / non-production use cases
Pros & cons
Pros
Enterprise DLP for AI products — protects against data exfiltration via memory writes/reads; backed by Proofpoint's enterprise channel.
Cons
Enterprise-tier pricing and complexity; smaller mind-share than Lakera or Microsoft Defender for AI.
Claims & capabilities
Acquired by Proofpoint Feb 2026 for integration into enterprise DLP / governance.
Technical surface
- API surface
- REST (typical SaaS REST + first-party SDK pattern; see vendor docs for language coverage)
- Backend storage
- custom
- Deployment
- on-prem or cloud (Proofpoint enterprise deployment); agentless approach
- Embedding model
- locked
- Multi-tenancy
- hard-isolation
- MCP
- Yes — Secure MCP servers (Model Context Protocol) is a core capability; protects MCP-based agent integrations
- A2A
- no data — searched proofpoint.com/us/platform/ai-security, acuvity.ai/, acuvity.ai/integrations/, acuvity.ai/blog/; A2A protocol not advertised
- OpenTelemetry
- no data — searched acuvity.ai, proofpoint.com/us/platform/ai-security, docs.acuvity.ai; OpenTelemetry export not advertised
Compare Acuvity (now Proofpoint) with…
Similar systems
Other memory governance, privacy & safety in the catalog, ranked by inbound references.
- Enkrypt AI T1
Applies guardrails at three points: (1) before write to vector DB, (2) before query reaches embedding model, (3) before response. Detects malicious instructions in stored memory before retrieval; scans for PII/PHI in/out. Text + image + voice modalities.
- HiddenLayer AISec Platform 2.0 T1
Targets the supply-chain / lineage layer rather than runtime memory writes. Model Genealogy tracks training/fine-tuning/modification history — catches poisoning baked in during training. AIBOM generates auditable inventory of model components + datasets. Runtime layer also monitors agentic workflows.
- Lakera Guard / Lakera Red T1
Screens every prompt, response, and retrieved document for indirect prompt injection — primary vector for memory poisoning. Treats memory as untrusted: anything written to or read from memory is adversarial until proven clean. Lakera Red provides "Agent Breaker" gamified red-teaming.
- Mem0 Security / OpenMemory T1
Commercial Mem0 ships SOC 2 / HIPAA, zero-trust access controls, BYOK encryption, real-time monitoring, audit logs, workspace governance as defaults. OpenMemory is the local self-hosted variant (Docker + FastAPI + Postgres + Qdrant) for privacy-first deployments.
- Microsoft Agent Governance Toolkit T2
Cross-Model Verification Kernel (CMVK) requires majority-voting agreement across multiple model calls before a memory-influenced action. Agent OS package intercepts every action (memory included) at sub-millisecond latency. MIT licensed.
- OWASP Agent Memory Guard T3
Open-source runtime defense. Enforces YAML policies on every memory read/write. SHA-256 baselines detect tampering, injection, sensitive-data leakage, protected-key modification, rapid-change anomalies. Forensic snapshots + rollback. Reference impl for OWASP ASI06 (Memory Poisoning).