Article
Rein’s Agent Breakers Research Team Discovers Critical Vulnerabilities in Top U.S. Retailer’s AI Shopping Agent
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16.07.26
Rein for HEALTHCARE AI Agents
Healthcare agents are diagnosing, recommending, and deciding - on policies, clinics, and care paths. That's a new risk profile, that requires a new kind of security.
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"At Dun & Bradstreet, our AI workloads run everywhere. We needed security that delivers coverage at the application layer, not at the perimeter. Rein is the first platform we've seen that's purpose-built for the production agents that actually run the business; it sees what every agent does, and where it runs in real time. That's the kind of coverage enterprise agentic AI demands. I literally log in to this product every single day."
Jay DePaul, Chief Cybersecurity & Technology Risk Officer, Dun & Bradstreet
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"Agentic AI creates an accountability gap that legacy controls simply weren't built to close. Rein is the only platform that gives detailed runtime visibility into what AI agents are performing in production - not just what they're being asked to do. No other vendor operates at the execution layer the way they do. Rein gives builders and defenders clear sight lines into agent behavior, real-time guardrails that don't break workflows, and the security posture we need to scale agentic AI with confidence."
Phillip Miller, VP & Global CISO, H&R Block
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"Uptime and security are strict requirements. That’s why we need a way to understand what’s really happening in our agents and apps, without relying on limited data, proxies or guesses. Rein provides exactly that. Its granular baselines and real production visibility give us confidence that when something deviates, it’s real - not another false signal. That way we can detect and stop actual exploitation attempts, understand what the application is actually doing, and support developers with the visibility they need, all without impacting production."
Jonathan Jaffe, CISO, Lemonade
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"As enterprise agents become more embedded in business processes, the ability to understand and communicate their impact, not just their technical risk, is paramount. Rein’s Business Impact Analysis genuinely bridges that gap, connecting technical findings directly to the business functions and actions at stake, in a language the C-suite can act on."
Rob Teel, Field CTO of GigaOm
Securing Healthcare Agents is New Territory
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No paper trail
Patient data is being exposed, a patient questions a diagnosis. Can you replay exactly what the agent did? Traditional logs can’t.
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Agents have access to everything PHI
One compromised agent doesn’t expose one record. It exposes every patient record it could touch.
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Misaligned agents are a potential lawsuit.
The gap between what an agent is supposed to do and what it actually does is where the greatest risk lives.
The Rein Way
See & Control your Healthcare Agents with Real Context
Get provable actions, enforceable policies, and agent alignment. For the first time, secure what your healthcare agents actually do.
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Forensic audit trail
See every agentic action: input, tools called, PHI accessed, output.
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Runtime PHI access control
Anomalous patient data access detected and blocked in real time - before it becomes a breach or a compliance violation.
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Agent alignment, managed
Control what the agent actually does, correlating, for the first time, intent and outcome.
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Agentic supply chain, verified
See which vulnerable dependencies actually execute in production, and a full agentic SBOM.
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Code security at agentic speed
SAST findings validated against what actually runs. Full code security for healthcare agents.
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Guardrails that protect, not just alert
Prompt injections and policy violations stopped before they cause business harm.
In numbers
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100%
coverage, uncovering every prompt, action and data access
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Full
MITRE ATLAS™ and OWASP top 10 protection with automatic guardrails
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<1 min
time to remediation with automatic fixes across the whole chain
Case Study
From Health Data Exposure to Full Visibility
A global health and insurance platform. Dozens of customer-facing agents. No visibility into what they were doing with patient data.
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Challenge
Agents were guiding patients on insurance coverage, clinic selection, and billing. No visibility into what PHI each agent accessed. Exposure was flagged with no record of what the agent recommended, accessed, or why.
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Solution
Rein deployed. The security team got a full trace of everything the agent did - every decision, every data accessed. Rein monitored the baseline for any deviation, and enforcement scoped each agent to only the patient data it needed.
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Outcome
Full runtime coverage in under a day. A defensible HIPAA audit trail. PHI access tightened without a single code change. Full accountability for the production agents across the enterprise
For Any Type of Enterprise Agent
The Rein platform is built to secure agentic systems across industries with radically different risk profiles, from financial fraud prevention and healthcare data privacy to complex SaaS environments.
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Finance agents
Get a full audit trail of every agent interaction, detect fraud and stop unintended agent behavior in real time
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Healthcare agents
Protect sensitive patient data from prompt injection, stop agent hallucinations while keeping interaction data private
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Retail agents
Put in dynamic guardrails while minimizing agent downtime, prevent fraud and stop attacks as they happen
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SaaS agents
Monitor agent to agent interactions and stop attacks on your agents before they reach the enterprise environment
Learn More
You Probably Have Some Questions.
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Healthcare agents read patient records, make recommendations, and trigger downstream systems at machine speed, and a model-boundary prompt filter sees none of it. Rein works at the execution layer, not the perimeter, so one misconfigured agent can't quietly expose every record it reaches, and you can replay exactly what any agent did.
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Yes. Rein keeps a complete, replayable, tamper-evident trace of every agent interaction, input, tools called, PHI accessed, and output, mapped to HIPAA, SOC 2, ISO 42001, and data privacy laws. It runs continuously with nothing to configure, so you can pass the audit and defend any decision that's challenged.
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Rein learns each agent's baseline and acts only on deviations, in real time. It sees the full execution chain, so it tells a legitimate request from a prompt-injected one and blocks only the specific violation, not the whole agent, stopping attacks, errors, and hallucinations alike rather than chasing signatures.
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Yes. Rein observes execution inside your own infrastructure, so PHI never leaves your environment. No data is routed to a vendor cloud, and coverage sits at the application layer, not a perimeter your data has to pass through.
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Rein is purpose-built for the production agents that touch patient data, not for applications. You get a forensic audit trail and a defensible HIPAA record, runtime PHI access control, and 100% coverage with MITRE ATLAS and OWASP Top 10, all from one simple sidecar with no code changes, and it's trusted by leaders like Jay DePaul at Dun & Bradstreet.
