Advanced LLM Pentesting

Secure your LLM now with Penti’s advanced penetration testing platform. A typical penetration test designed for software and network infrastructure is inadequate when it comes to identifying unique LLM vulnerabilities. That’s why Penti provides LLM pentesting, tailored to individual AI applications.

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Penti’s AI-Led LLM Penetration Testing Services

Large language models (LLMS) process and generate massive amounts of data in ways that traditional security tools aren’t designed to address. Standard pentesting tools can miss critical vulnerabilities like indirect prompt injection attacks, biased outputs, and subtle data manipulation. That’s why Penti is powered by curated threat intelligence and verified by human cybersecurity experts, ensuring that no vulnerabilities are missed.

3M+
findings processed per week
620K+
critical vulnerabilities discovered
1.2M+
regulatory compliance-related findings
$33M+
saved in potential losses
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Penetration Testing that Keeps Pace with LLMs

Static penetration testing tools don’t cut it when it comes to LLMs. Penti’s AI-driven pentesting platform leverages sophisticated and dynamic tactics in order to keep up with the rapid evolution of AI.

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Identify Vulnerabilities in LLM Behavior

Penti’s human pentesters leverage the efficiency of AI testing tools and threat intelligence in order to understand the behavior of an LLM and uncover weaknesses like biased outputs, hallucinations, and potential manipulation by a malicious actor.
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Bolster Security of APIs and Data Access

LLMs can be especially vulnerable to unauthorized access and data leakage because they interact with APIs to complete specific functions. Penti investigates LLM and user interactions, identifying potential weaknesses and areas of vulnerability.
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Ensure and Maintain Compliance

If your organization is in an industry with strict regulations, like healthcare or finance, Penti will help you ensure that your LLM adheres to essential compliance standards, like GDPR, HIPAA, NIS 2, DORA, and more.
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AI-Powered Surface Mapping and Vulnerability Scanning

Our platform rapidly maps your LLM’s attack surface, identifying its components and performing continuous vulnerability scans to pinpoint threats before they can escalate.
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Intelligence Gathering and Expert-Led Manual Pentesting

Penti assesses how your LLM was built, how it gets its training data, and how it interacts with other systems, then performs simulated real-world attacks in order to expose vulnerabilities.
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AI-Powered Prioritization and Remediation Roadmap

Penti’s user-friendly platform is easy to navigate and offers an intuitive interface that tracks your LLM’s security status in real time.
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Compliance-Ready Reports

We align security findings to compliance standards and regulatory requirements, accelerating your team’s compliance path.

Penti’s LLM Pentest Approach

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Secure your LLM Today with Penti

Don’t let potential risks snowball into breaches. Get clear insight into your LLM’s security posture now.

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Penti’s penetration testing for LLMs

API pentesting

Penti evaluates how your model interacts with APIs, identifying risks such as unauthorized function calls, excessive permissions, insecure authentication, and data leakage through prompt manipulation.

Cloud pentesting

We combine LLM pentesting with cloud security testing to assess how models access cloud resources, storage, and services.

Mobile pentesting

Our platform identifies security flaws in iOS and Android apps by prodding client-side code and backend APIs, with security experts’ validation.

Network pentesting

Combining behavioral testing with traditional network pentesting techniques, Penti helps prevent LLMs from becoming an entry point for broader network attacks.

Web app pentesting

Our platform tests how LLMs process user inputs within web apps, identifying vulnerabilities like indirect prompt injection, cross-user data exposure, and insecure session handling

Penetration testing for IoT

Penti evaluates how LLMs interact with IoT devices, command systems, and telemetry data, identifying risks such as unauthorized device control, data manipulation, or unsafe automated actions.
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More compliance-driven pentests by Penti

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SOC 2 pentesting

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ISO 27001 pentesting

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PCI-DSS pentesting

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HIPAA pentesting

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GDPR pentesting

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NIST pentesting

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CMMC pentesting

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Other Industries we work with

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Healthcare

Learn more
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HRTech

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[ 03 ]

Fintech

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LLM applications

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SaaS

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Education

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Industrial System

Learn more
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Rapid AI Security Testing On Demand

Leverage Penti’s targeted testing capabilities and identify blind spots in your LLM’s security posture

LLM-Tailored Testing Methodology

Penti’s pentesting agents and experts employ several dynamic tactics including model fuzzing, black and white box testing, and adversarial input crafting along with other real-world simulated attacks.

Faster Time to Remediation

Actionable insights and developer-friendly guidance help your team fix issues quickly without disrupting business-as-usual.

Audit-Ready Reports

Get clear documentation aligned with SOC 2, ISO 27001, HIPAA and GDPR to pass audits and security reviews with ease.

Seamless Integration

Plug into your CI/CD pipeline or model development lifecycle for continuous, low-friction testing as your LLM evolves
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Let Customers Know They Can Trust Your LLM

As LLMs and AI tools flood the market, new AI-fueled cybersecurity threats have multiplied and attackers continue to exploit the vulnerabilities unique to LLMs. Make sure your model is protected and give your customers peace of mind.

DREW DANNER
Managing Director, BD Emerson

Penti's service is a game changer for our compliance needs. The insights we gained were invaluable for our team.  Doing this well is crucial for our compliance targets and key in advancing our strategic initiatives.

ALBERTO SHEINFELD
CTO, Lev

The integration between Penti, our system, and third parties like Vanta is exceptional. I would also like to mention that their response times are extremely fast!

CAMERON SWAIM
CTO, ReadWorks

Penti has been like having an experienced and nimble Security Engineer on staff. They have outlined issues in our platform and guided us towards implementations and fixes that allow for us to ensure we are treating our users data with the utmost care.

/ why Penti
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Why Choose Penti for LLM Penetration Testing

Penti’s platform addresses the unique risks introduced by AI systems, combining automation, threat intelligence, and human expertise to deliver more reliable results than traditional pentesting approaches.

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Built for LLM-Specific Threats

Penti’s platform excels in security testing for  LLM environments, detecting risks like prompt injection, hallucinations, biased outputs, and data leakage that traditional tools often miss.

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AI-Led, Expert-Verified Testing

Automated AI testing is enhanced by experienced human pentesters who validate findings, simulate real-world attacks, and eliminate false positives.

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Continuous and Scalable Security

Penti keeps pace with rapidly evolving LLMs through continuous testing and dynamic attack techniques, ensuring your security posture remains strong over time.

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Compliance-Driven by Design

Security findings are mapped directly to regulatory requirements such as GDPR, HIPAA, SOC 2, and ISO 27001, simplifying audits and risk assessments.

CERTIFICATIONS
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Protect Your LLM before Vulnerabilities Turn into Costly Incidents.

With Penti, you gain clear visibility, actionable insights, and confidence in your AI security posture. Secure your model with a platform designed for modern AI risks.

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start pentest now
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FAQ

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What is LLM penetration testing?

LLM penetration testing evaluates AI models for vulnerabilities unique to language models, including prompt injection, data leakage, and unsafe outputs.

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How is LLM pentesting different from traditional pentesting?

Traditional pentesting focuses on infrastructure and code, while LLM pentesting analyzes model behavior, training data risks, and AI-specific attack vectors.

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Do you test both APIs and model behavior?

Yes. Penti assesses LLM behavior, API integrations, data access controls, and user interactions to identify security gaps.

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Is Penti suitable for regulated industries?

Unlike other LLM pentesting tools, Penti aligns findings with regulations like GDPR, HIPAA, NIS 2, and DORA to support compliance requirements.

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How long does an LLM pentest take?

Testing timelines vary by complexity, but Penti delivers rapid results with continuous testing capabilities.

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Can Penti integrate into our development workflow?

Yes. Penti integrates seamlessly into CI/CD pipelines and model development lifecycles for ongoing security testing.

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Are results easy for developers to act on?

All findings include clear prioritization and remediation guidance to help teams fix issues efficiently.