Sectum AI vs Protect AI (Palo Alto Prisma Cloud)
TL;DR. These products solve different problems. Protect AI — acquired by Palo Alto Networks and now part of Prisma Cloud — secures AI models: scanning model artifacts for backdoors and unsafe deserialization (Guardian), adversarial red-teaming (Recon), and runtime protection (Layer). Sectum AI verifies multi-tenant isolation — whether one customer’s data can reach another across the AI stack — and produces a tamper-evident attestation an auditor or DPO accepts and can re-verify themselves. Neither replaces the other: a multi-tenant AI SaaS running on Prisma Cloud still needs the isolation evidence Sectum AI produces. (Same shape as Sectum AI vs Cisco AI Defense.)
The two products
Protect AI / Palo Alto Prisma Cloud (protectai.com)
Category: end-to-end AI security platform spanning model security, red-teaming, and runtime protection. Post-acquisition, integrated into Palo Alto’s Prisma Cloud.
Acquisition: Palo Alto Networks acquired Protect AI in 2025-2026 at an estimated $650-700M (Yahoo Finance, BankInfoSecurity). Protect AI had previously raised a $60M Series B at a $400M valuation in 2024.
Products (Protect AI alternatives post-acquisition, Repello, Akto’s Protect AI breakdown):
- Guardian — AI model security; scans 35+ model formats (PyTorch, TensorFlow, ONNX, Keras, Pickle, GGUF, Safetensors, LLM-specific) for deserialization attacks, architectural backdoors, runtime threats.
- Recon — automatic AI red-teaming; multi-vector attack simulation for pre-prod.
- Layer — runtime protection; 27 turnkey policies based on 15 security scanners.
- NB Defense — open-source JupyterLab extension + CLI for notebook security (PII in outputs, vulnerable deps).
- Rebuff — open-source prompt-injection detector (see Sectum AI vs Rebuff).
Pricing: OSS pieces (NB Defense, Rebuff) free. Commercial products (Guardian, Recon, Layer) now require Prisma Cloud licensing post-acquisition — standalone pricing no longer publicly available. Customers not already on Palo Alto encounter Prisma Cloud enterprise licensing requirements rather than standalone AI security tool pricing.
Buyer: Enterprises building / deploying AI models who want a single-vendor full-stack AI security platform. Existing Palo Alto Networks / Prisma Cloud customers (post-acquisition).
Sectum AI (sectum.ai)
Category: multi-tenant AI verification — focused, independent, with a fully open evidence layer.
License: Apache 2.0 OSS core. Sectum Cloud commercial. The evidence layer in the OSS produces the same artifacts the hosted product does — by design.
Method: marker substrate. Provisions synthetic tenants, plants cryptographic canary markers, records a hashed ground-truth manifest, runs 11 cross-tenant probe classes across 13 surfaces, produces a tamper-evident evidence pack (RFC 3161 TSA + Sigstore Rekor + in-toto envelope).
For: multi-tenant AI SaaS CISOs, DPOs, and audit firms. The flagship engagement is a GDPR Article 17 erasure attestation. See pricing.
Enterprise platform vs. focused independent verifier
| Protect AI / PANW Prisma | Sectum AI | |
|---|---|---|
| Core problem | Securing the AI model (artifact scanning, red-team, runtime) | Verifying the multi-tenant boundary across the data plane |
| Scope | Full AI-security platform (model + red-team + runtime + notebook) | Focused multi-tenant verification + tamper-evident evidence |
| Evidence model | Findings inside the Prisma console | RFC 3161 TSA + Sigstore Rekor + in-toto envelope + audit PDF + evidence.json |
| Independent verification | Trust the platform’s report | sectum-ai verify <pack> — any third party can re-check it, without Sectum AI |
| Multi-tenant boundary | Not the focus | The category |
| Flagship engagement | — | GDPR Art. 17 erasure attestation |
| For | Teams securing AI models / Prisma Cloud customers | Multi-tenant AI SaaS CISOs, DPOs, audit firms |
The two most important rows are “core problem” and “independent verification.” Protect AI / Prisma Cloud secures the AI model — its strongest play, Guardian, scans 35+ model formats for backdoors and unsafe deserialization. Sectum AI verifies the tenant boundary across the data-plane surfaces (vector DB, caches, agent memory, fine-tunes) and emits an attestation anyone can re-verify with sectum-ai verify, without trusting the vendor. Different problem, different artifact — which is why teams run both.
The Sectum AI vs Cisco AI Defense comparison covers the same independent-verifier shape against the other big-platform acquisition.
Why the verification path matters
An isolation attestation is only as good as who can check it. Inside a platform like Prisma Cloud, a finding lives in the vendor’s console and the buyer trusts the vendor’s report. Sectum AI’s evidence is the opposite: every pack is re-verifiable by sectum-ai verify on any machine — the auditor, the customer’s security team, or a regulator can confirm the run digest, the manifest hash, the RFC 3161 timestamp, and the Rekor inclusion proof without Sectum AI in the room. Mutating any field makes verify exit 4.
That independence is the point. A multi-tenant AI SaaS can run Sectum AI inside its own environment (BYOC) and hand a counterparty an artifact whose trustworthiness does not rest on trusting Sectum AI — which is exactly what an auditor or DPO is looking for.
Surface coverage
| Surface | Protect AI / PANW | Sectum AI |
|---|---|---|
| AI model security (deserialization, backdoors, runtime threats) | ✓ (Guardian — 35+ model formats; this is their strongest play) | — (not a Sectum AI focus) |
| Adversarial testing / red-team | ✓ (Recon) | partial (Sectum AI tests cross-tenant behavior specifically) |
| Runtime AI protection | ✓ (Layer — 27 turnkey policies / 15 scanners) | — (Sectum AI doesn’t block live traffic) |
| Jupyter notebook security | ✓ (NB Defense — OSS) | — (out of scope) |
| Prompt-injection detection | ✓ (Rebuff — OSS) | — (out of scope) |
| Vector DB direct (cross-tenant integrity) | partial (under Guardian’s model-format coverage) | ✓ (Pinecone, pgvector, Weaviate, Chroma live adapters) |
| Semantic cache | — | ✓ (Class 4 + live Redis adapter) |
| KV cache (timing side channel) | — | ✓ (Class 5 — statistical Cohen’s d effect-size test) |
| Embedding inversion across tenants | — | ✓ (Class 6) |
| Agent / MCP confused-deputy + token passthrough | partial | ✓ (Class 7 — per-finding evidence) |
| Persistent agent memory cross-tenant | — | ✓ (Class 8) |
| LoRA / fine-tune cross-tenant influence | — | ✓ (Class 9) |
| Multi-turn benign extraction (IKEA / Silent Leaks) | — | ✓ (Class 10) |
| RAG poisoning | — | ✓ (Class 3) |
| GDPR Article 17 erasure verification | — | ✓ (Class 11 — the Erasure Attestation engagement) |
| Observability backends (Langfuse / LangSmith / Phoenix) | — | ✓ (live adapters) |
Protect AI / Palo Alto’s strongest coverage is AI model security (Guardian’s 35+ model formats — genuinely best-in-class). Sectum AI’s strongest coverage is multi-tenant boundary across 13 surfaces. The two products’ strengths are complementary, not competing.
When to use Protect AI / Palo Alto Prisma Cloud
- You’re an enterprise Palo Alto customer and want one vendor across cloud + network + AI security.
- You need AI model security at the deserialization / backdoor / model-format level (Guardian’s specialty).
- You operate at enterprise scale and the Prisma Cloud platform / licensing motion is the right fit.
- You want Cisco-AI-Defense-style platform breadth in a Palo Alto vendor relationship.
When to use Sectum AI
- You need to prove multi-tenant isolation with cryptographically-attestable, control-mapped evidence — without an enterprise platform commitment.
- You’re facing a GDPR Article 17 erasure obligation on a churned tenant.
- You’re preparing for SOC 2 / ISO 27001 / HIPAA on a multi-tenant AI product and need per-finding control mappings (OWASP / ATLAS / NIST) in your audit evidence.
- You want independently-verifiable evidence —
sectum-ai verifyworks without Sectum AI installed; mutating any field makes verify exit 4. - You want an open-source evidence layer that doesn’t depend on a single vendor’s continued operation or pricing decisions.
Using both
A Palo Alto Prisma Cloud customer running a multi-tenant AI SaaS gets the right pattern from running both:
- Prisma Cloud / Guardian / Recon / Layer handles AI model security, broad adversarial testing, runtime protection — at the platform level.
- Sectum AI produces the multi-tenant isolation evidence pack the auditor / DPO needs — with a cryptographic chain of custody and independent verification.
Prisma’s reports answer “is our AI estate healthy at the platform level?”. Sectum AI’s pack answers “can you prove tenant A’s data didn’t reach tenant B, with a chain of custody an auditor accepts?”. They don’t substitute; both compound.
Honest positioning
Protect AI / Palo Alto Prisma Cloud is the enterprise platform option for AI security — Palo Alto’s $650-700M acquisition validates the category and gives the products substantial corporate distribution. The right pick for a Palo Alto shop or an enterprise wanting one vendor across AI security.
Sectum AI is a focused, independent verifier — the right pick for a multi-tenant AI SaaS that needs auditor-grade isolation evidence with an independent verification path, and for any buyer who wants a verification artifact whose trustworthiness does not rest on trusting a single vendor.
The trust-model and pricing-motion differences make these clean, non-competing choices.
Pricing
- Protect AI commercial products (Guardian, Recon, Layer) — now require Prisma Cloud licensing; standalone pricing not publicly available post-acquisition.
- Protect AI OSS (NB Defense, Rebuff) — free.
- Open Sectum (OSS) — free, Apache 2.0.
- Sectum Cloud — see pricing.
References
- Protect AI / Palo Alto — Protect AI homepage, Guardian, Layer, Recon, Palo Alto Networks acquisition (GeekWire), Palo Alto Acquires Protect AI (SecurityWeek), $700M Acquisition Analysis (BankInfoSecurity), Protect AI alternatives post-acquisition (Repello AI), Protect AI on GitHub.
- Sectum AI — GitHub, docs, attack catalog, evidence chain, sample evidence packs.
- Related comparison: Sectum AI vs Cisco AI Defense — same enterprise-platform-vs-independent-attester story, the other major acquisition.