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 SaaS and Retail AI Agents
SaaS and Retail agents are accessing sensitive data, making recommendations, and moving money. One mistake, hallucination or misconfiguration can cost a lot.
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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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"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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"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 SaaS Agents is Like Entering the Unknown
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No paper trail
A user sends a prompt. What the agent does next is anyone’s guess, and you have no way of knowing or controlling it
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Agents see every customer’s data
One unintended behavior or a prompt injection, and your entire customer DB is exposed
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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 SaaS Agents for the first Time
Get provable actions, enforceable policies, and agent alignment. For the first time, secure what your SaaS agents actually do.
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Forensic audit trail
See every agentic action: input, tools called, data accessed, output, and anything in between
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Runtime data access control
Anomalous data access - across tenants or outside scope - detected and blocked before it becomes a breach.
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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 SaaS 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 “What does this agent do?” to Full Visibility & Control
A fast-growing SaaS platform. Agents processing sensitive employee data across hundreds of enterprise customers. No runtime visibility into what they were doing.
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Challenge
After a complaint, the security team needed to prove which agent accessed which employee data and when. No runtime record existed. Legal flagged the gap - both for the immediate incident and for every customer contract requiring data isolation guarantees.
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Solution
Rein deployed, and the security team got access to every agent action, including who accessed the agent, why and what the agent did. This 360 view gave the team for the first time real visibility into the agent’s behavior.
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Outcome
Full runtime coverage in under a day. A complete, defensible audit trail for the investigation. Tenant data isolation verified without a single code change.
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
Learn More -
Healthcare agents
Protect sensitive patient data from prompt injection, stop agent hallucinations while keeping interaction data private
Learn More -
Retail agents
Put in dynamic guardrails while minimizing agent downtime, prevent fraud and stop attacks as they happen
Learn More -
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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SaaS agents act on sensitive data, make recommendations, and move money across hundreds of tenants, so one misconfiguration doesn't stay small. What an agent does after a prompt is invisible unless you see the execution itself, and a single scope mistake can reach every customer's data and break the isolation your contracts promise.
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Yes. Rein sees every data access an agent makes and blocks anything that crosses a tenant boundary or steps outside scope, in real time. It verifies tenant isolation continuously and gives you the record to prove the isolation guarantees in your customer contracts.
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Yes. Rein keeps a complete, replayable record of every agent action, the full execution chain plus who triggered it, what it did, and why. It's audit-ready for SOC 2, ISO 42001, and the data isolation terms in your contracts, giving you a defensible trail in under a day with nothing to configure.
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Rein learns each agent's baseline and acts only on deviations, in real time. It sees the full execution chain to tell a legitimate request from a prompt-injected one, and blocks only the specific violation, not the whole agent, so real users are never affected.
