8 Best Penetration Testing Companies (2025)

A penetration test helps you find critical security vulnerabilities that hackers could use to hack, steal data, or inject malicious code into your systems. It’s essential to perform a proper pen test on your applications on all levels to mitigate any vulnerabilities in your system. It also helps you perform vulnerability tests on software, servers, networks, and machines. These pen tests uncover critical vulnerabilities and security issues. They help fix these vulnerabilities and ensure the proper safety and security of your apps and services.

I dedicated over 30 hours to meticulously researching and selecting the best penetration testing companies. My efforts focused on key factors such as industry reputation, client reviews, certifications, and the range of services offered. I also evaluated their expertise in various domains, including web applications and network security. This comprehensive approach ensures that my final list features only the most reliable and effective firms in the cybersecurity landscape.

The penetration testing market is projected to grow from $5.30 billion in 2025 to $15.90 billion by 2030, achieving a compound annual growth rate of 24.59%. This growth highlights increasing cyber security threats and the need for stronger protective measures, according to Mordor Intelligence. Read more…

Best PenTest Companies & Service Providers

Name	Year Found	Headquarters	Demo	Links
Raxis	2011	Atlanta, USA	Free Consultation	Learn More
BreachLock	2019	USA- New York, EU- Amsterdam	Free Demo	Learn More
Acunetix	2004	London, England	Free Demo	Learn More
Invicti	2018	Austin, Texas, USA	Free Demo	Learn More
Pentera	2015	Petah Tikva, Israel	Free Demo	Learn More

The best penetration testing companies, like Raxis, BreachLock, and Astra Pentest, provide top-tier security assessments and compliance solutions, ensuring organizations stay ahead of cyber threats with their expert testing services.

1) Raxis

Popular Services: Penetration Testing, PTaaS, Red Teaming, Compliance Testing, Social Engineering, Breach and Attack Simulation.

Raxis is a formidable player in the cybersecurity realm, distinguished by its extensive array of services that transcend conventional penetration testing. They excel in customizing both Penetration Testing as a Service (PTaaS) and traditional Pen Test engagements to meet the specific requirements of each client. This tailored approach ensures that every assessment is intricately aligned with the organization’s unique infrastructure and operational needs. A cornerstone of Raxis’s offering is its Certified Team of Testers, who leverage a combination of sophisticated manual techniques—including chained attacks—and cutting-edge tools to identify vulnerabilities that automated scanners often overlook.

I am particularly impressed by their Red Team Assessments, which simulate real-world attack scenarios to rigorously evaluate an organization’s security resilience. This hands-on approach enables businesses to gain a genuine understanding of how their systems and personnel would react under cyber threats. Furthermore, Raxis delivers comprehensive reporting that prioritizes critical vulnerabilities, allowing organizations to address the most pressing issues first. Their innovative Report Storyboard feature provides valuable insights by illustrating how multiple vulnerabilities could interact within an exploit scenario, enhancing overall situational awareness and response strategies.

What is Raxis’ Unique Selling Point?

• Raxis Attack provides ongoing reporting from automated and manual testing through the secure Raxis One Portal.
• With Raxis Attack customers can request Unlimited On-Demand Penetration Tests, track vulnerabilities, and chat with the penetration team.
• It covers testing for Internal and External Networks, Wireless, Cloud, IoT, SCADA, Web and Mobile Apps, APIs, Devices, and Red Team Assessments.
• All tests are conducted by certified US penetration testers, meeting NIST 800-53, NIST 800-171/CMMC, PCI, HIPAA, GLBA, ISO 27001, and SOX compliance standards.

Key Info:

Free Demo/Consultation: Yes, you can request a Free Demo
Happy Clients: 1000+ satisfied clients, including Talon, GE Digital, and more
Headquarters: Atlanta, Georgia, USA
Year Founded: 2011

Visit Raxis >>

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2) BreachLock

Popular Services: External Web Application Testing, Injection Attack Simulation, Malicious File Upload Testing, JavaScript Embedded Payload Assessment, and Compliance Testing

BreachLock is a full-stack Penetration Testing Services Provider, offering on-demand, comprehensive PTaaS to help you identify security risks and meet compliance requirements. The company provides full-stack coverage—from cloud and IoT to APIs and internal networks—which makes it easier to secure every digital layer. Their one-day scheduling makes a difference when quick action is critical. They offer manual and automated testing options, giving me both precision and scale without added complexity. 

BreachLock is recognized as a forward-thinking penetration testing company, providing a practical balance of speed, depth, and adaptability. The On-Demand Pentesting services from Breachlock aligns security testing with dynamic project timelines, while the post-test retesting feature confirms fixes without requiring a complete reassessment. BreachLock employs both automated and manual techniques to ensure a thorough assessment of security vulnerabilities across various platforms. Their Continuous Testing Cycle offers monitoring, patching, and retesting over a year, making security an ongoing priority rather than a one-time fix. 

What is Breachlock’s Unique Selling Point?

• Comprehensive automated penetration testing with AI-driven tools that provide accurate, real-time vulnerability assessments to mitigate risks effectively.
• Certified experts conduct manual testing in addition to automated scans, ensuring a thorough evaluation of complex security environments.
• Scalable testing solutions that cater to businesses of all sizes, from startups to enterprise-level organizations, ensuring flexibility and accessibility.
• Continuous vulnerability monitoring through seamless integration with your existing systems, enabling proactive defense against emerging threats and vulnerabilities.
• Industry-leading compliance coverage, including GDPR, PCI-DSS, and HIPAA, helping organizations meet regulatory standards while enhancing their security posture.

Key Info:

Free Demo/Consultation: You can opt for a Free Consultation
Happy Clients: 1000+ satisfied Clients, including DocuSign, Commerce Bank, Foley, etc.
Headquarters: USA- New York, EU- Amsterdam
Year Found: 2019

Visit BreachLock >>

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3) Acunetix

Popular Services: Automated Web Application Security Testing, Continuous Vulnerability Scanning, Manual Penetration Testing Tools, Web Application Firewall Configuration, REST API for Integration and Extensibility

Acunetix is a powerful penetration testing company that provides comprehensive vulnerability detection, identifying over 7,000 web vulnerabilities, including SQL Injection and XSS. This is vital in today’s cyber landscape, where new threats emerge daily. I particularly appreciate their advanced crawling technology, which mimics real-world browser behavior, enabling detection in complex web apps and single-page applications. Furthermore, Acunetix seamlessly integrates into CI/CD pipelines, allowing automated security testing within development workflows. 

Acunetix provides a comprehensive suite of features, including a login sequence recorder for secure content scanning and customizable scan profiles. These capabilities enable businesses to concentrate on their most significant risk areas while ensuring efficient security assessments. The high-speed scanning engine guarantees rapid and precise evaluations. Additionally, the vulnerability management dashboard presents teams with a clear overview of identified issues, their severity, and remediation priorities, facilitating effective risk management.

What is Acunetix’s Unique Selling Point in Penetration Testing?

• Acunetix delivers deep vulnerability scanning, identifying over 7,000 issues and ensuring robust protection against the latest security threats.
• Acunetix combines automation with manual testing, offering a powerful mix for precise vulnerability detection and remediation.
• Provides end-to-end scanning for web applications and APIs, addressing security concerns across modern, dynamic environments and architectures.
• Acunetix offers continuous scanning, ensuring vulnerabilities are discovered and patched in real time and keeping applications secure against evolving threats.
• Acunetix’s comprehensive reports assist in regulatory compliance and streamline communication with stakeholders, providing actionable insights for remediation.

Key Info:

Free Demo/Consultation: Get a Free Demo by entering your work email
Happy Clients: Some of its top clients include Sony, Liverpool, TCS, Visa, and the US Air Force.
Headquarters: London, England
Year Found: 2004

Visit Acunetix >>

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4) Invicti

Popular Services: DAST + IAST Scanning, SDLC-Security Testing with 2-Way Integration, Automated Pen Testing, Proof-Based Scanning

Invicti provides fast and reliable application security testing services. They offer pen-testing services for a wide range of software. You will also receive a data-rich analysis of your security presented in an easy-to-understand representation. Invicti is one of the top penetration testing companies, supporting the scanning of apps built with NET and PHP. Their proof-based scanning checks automatically verify vulnerabilities and suggest steps required to correct them. This company delivers practical security solutions, empowering businesses to strengthen their defenses against evolving cyber threats.

Invicti excels among penetration testing companies with features that secure web applications and APIs from vulnerabilities like cross-site scripting and SQL injections. It enables custom scans for focused analysis, including password-protected areas, offering businesses targeted security solutions for sensitive data protection. Invicti integrates with platforms like GitHub, Slack, and Jira, streamlining workflows for teams. Their services, including penetration testing and web vulnerability scanning, help organizations identify risks efficiently. 

What is Invicti’s Unique Selling Point in Penetration Testing?

• Comprehensive vulnerability scanning detects web application security flaws, ensuring complete risk assessment with automated, real-time results for fast fixes. 
• Combines dynamic and static analysis, offering thorough, scalable penetration testing for modern web apps, enhancing security across the board. 
• Integrates seamlessly with CI/CD pipelines, streamlining the security testing process and improving workflow efficiency for faster vulnerability resolution. 
• Detailed, actionable reports highlight security risks, prioritize remediation efforts, and provide insights to strengthen web applications continuously. 
• Advanced machine learning-powered scanning capabilities improve accuracy, detecting even the most subtle vulnerabilities, ensuring robust, comprehensive protection.

Key Info:

Free Demo/Consultation: Ask for a Free Demo
Happy Clients: Invicti has a strong client base, including NASA, Cisco, and Verizon.
Headquarters: Austin, Texas, USA
Year Found: 2018

Visit Invicti >>

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5) Pentera

Popular Services: BlackBox/GrayBox Testing, Targeted Testing, On-Demand Reporting, Visual Attack Paths, Test Scope Definition

Pentera helps businesses perform security testing using vulnerability scanners to check security issues. Its independent validation lets you check your security readiness at any given instant. By performing daily, weekly, and monthly security checks on various parts of your apps and services, you may maintain maximum resilience and reduce your cyber exposure. They help mitigate all risks by creating a risk-based remediation roadmap. The platform tests diverse real-world malware and ransomware exploits using MITRE ATT&CK methods, allowing the emulation of safe, offensive attacks.

It integrates with ServiceNow, Vectra Cognito, and Palo Alto Networks AutoFocus and offers services like pentesting, compliance, and network security. You can gather information about hackers’ latest tactics and methodologies, which can be used to test your systems and mitigate security concerns from your apps and services. They can also provide security validations and hardening for your company’s in-office and remote employees.

What is Pentera’s Unique Selling Point?

• Pentera automates end-to-end penetration testing, saving time and resources by simulating real-world cyberattacks for thorough vulnerability analysis.
• Leverages AI-driven insights to prioritize risks, enabling organizations to focus on the most critical vulnerabilities that pose real threats. 
• Scalable penetration testing platform supports both small businesses and large enterprises, providing flexible solutions tailored to specific security needs. 
• Offers continuous testing with automated assessments, ensuring vulnerabilities are promptly identified and remediated throughout the lifecycle of systems. 
• Provides detailed, easy-to-understand reports and actionable recommendations, making it simple for security teams to implement and track fixes.

Key Info:

Free Demo/Consultation: Yes, you can book a Free Demo
Happy Clients: Pentera has over 1000 clients in 45+ countries.
Headquarters: Petah Tikva, Israel
Year Found: 2015

Link: https://www.pentera.io/

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6) Nessus

Popular Services: Vulnerability Scanning, Vulnerability Assessment, Compliance Framework Support, Whitebox Testing, Blackbox Testing, Customizable Testing Templates

Nessus stands out as a leading penetration testing company by offering a wide array of features that make vulnerability assessments more efficient and thorough. I appreciate how they provide pre-built templates for both authenticated and non-authenticated scans, which saves valuable time during assessments. This capability, paired with their support for both whitebox and blackbox testing, allows penetration testers to tackle vulnerabilities from various angles. I find their ability to tailor templates to specific needs particularly useful, ensuring tests are accurate without generating false positives or negatives. 

Nessus has made significant strides in keeping pace with the evolving digital landscape by offering continuous updates and support for cloud environments, IoT, and even Operational Technology (OT) devices. These capabilities make it an indispensable tool for penetration testing companies and organizations concerned with security across a range of systems. The fact that Nessus provides a lightweight solution without compromising on scan speed or resource consumption makes it a versatile and effective choice.

What is Nessus’s Unique Selling Point?

• Unmatched vulnerability detection capabilities with over 130,000 plugins, ensuring comprehensive and accurate penetration testing for diverse IT environments.
• Advanced, automated scanning features reduce manual effort, increasing testing efficiency and minimizing human error, saving time and resources. 
• Customizable reports with detailed findings allow for clear communication of vulnerabilities, empowering IT teams to prioritize remediation effectively. 
• Scalable solution designed to meet the needs of businesses of all sizes, offering flexible deployment options and integration capabilities. 
• Real-time updates and continuous improvement ensure Nessus stays ahead of emerging threats, providing proactive protection against evolving security risks.

Key Info:

Free Demo/Consultation: Yes , you can try Nessus free for 7 days
Happy Clients: 500+ happy clients including American Eagle, Virtustream, World Wide Technology
Headquarters: Columbia, Maryland, USA
Year Found: 2002

Visit Nessus >>

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7) Defendify

Popular Services: Penetration Testing, Ethical Hacking, Vulnerability Identification, Risk Assessment, Mitigation Recommendations

Defendify is one of the most popular penetration testing services for all-in-one cybersecurity solutions. The company offers an array of features that make it a top contender among penetration testing companies. They provide simulated cyber-attacks performed by certified ethical hackers, who identify vulnerabilities in networks, applications, and assets. This allows businesses to uncover potential weaknesses before malicious actors can exploit them. Their comprehensive risk analysis ensures a clear understanding of the impact of vulnerabilities, empowering clients to make informed security decisions. Furthermore, their targeted exploitation simulates real-world attacks, demonstrating how security flaws could be exploited, which helps organizations address risks proactively.

Additionally, Defendify emphasizes realistic attack simulations and integrates threat intelligence to simulate advanced persistent threats. This results in comprehensive testing that mimics actual cyber-attacks, covering areas like web and mobile applications, networks, and internal assets. The company offers detailed, actionable mitigation recommendations to strengthen security posture, while also supporting compliance with industry regulations. Businesses can also tailor testing plans based on their unique needs, ensuring every aspect of their infrastructure is tested. By providing these services, Defendify helps companies fortify their defenses against ever-evolving cyber threats.

What is Defendify’s Unique Selling Point?

• Defendify offers comprehensive penetration testing services that proactively identify and address vulnerabilities before they can be exploited by attackers.
• Their expert team simulates real-world cyberattacks to provide actionable insights, strengthening your security posture and minimizing potential risks.
• With a layered security approach, Defendify integrates penetration testing seamlessly into your overall cybersecurity strategy, ensuring thorough protection.
• Flexible testing options allow for tailored assessments that align with your organization’s unique environment and risk profile, enhancing effectiveness.
• Defendify’s detailed reporting includes clear, prioritized recommendations, empowering organizations to implement timely fixes and fortify defenses efficiently.

Key Info:

Free Demo/Consultation: Yes, you can book a live demo
Happy Clients: 3500+ satisfied clients
Headquarters: Portland, Maine, USA
Year Found: 2017

Link: https://www.defendify.com/

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8) Detectify

Popular Services: Surface Monitoring, Application Scanning, Continuous Coverage, Unique Crawling and Fuzzing Engine, Vulnerability Assessments, Ethical Hacker Expertise

Detectify is one of the best penetration testing companies for domain and web security services. They help you efficiently perform automated or manual web application penetration testing to find the vulnerabilities in your web applications. You get priority remediation guidance and a full report to assist you in promptly resolving the issues.

Detectify’s cloud-based penetration testing services allow for breach and attack simulation (BAS), creating the most realistic ethical hacking attempts to test your apps. They check for all vulnerabilities from OWASP top 10, CORS, Amazon S3 Bucket, and their moral hacker network to ensure your safety from all newly discovered vulnerabilities.

What is Detectify’s Unique Selling Point?

• Comprehensive penetration testing platform that automates vulnerability scanning and provides in-depth insights into web application security risks and weaknesses.
• Utilizes cutting-edge, continuously updated security intelligence to ensure real-time detection of newly discovered vulnerabilities and emerging cyber threats.
• Offers an easy-to-use interface, allowing teams of all sizes to run security tests without needing specialized technical knowledge or skills.
• Provides customizable testing options, enabling businesses to tailor security assessments to their unique needs and specific application environments.
• Backed by a team of ethical hackers, Detectify delivers high-quality, human-vetted results for reliable, actionable security recommendations and fixes.

Key Info:

Free Demo/Consultation: Yes, you can book a free demo or start a trial
Happy Clients: 1000+ happy clients including names like Spotify, Trustly, Photobox, Grammarly, Smartbear
Headquarters: Stockholm, Sweden
Year Found: 2013

Link: https://detectify.com/

What are pen test companies?

Pen test companies provide penetration testing services and a platform for pen testing. These pen-testing providers perform authorized simulated attacks on applications and systems to check the strength of their security.

Such companies use the same techniques and software as the attackers to evaluate the security system and discover vulnerabilities.

The pen testing companies check all the forms of possible attacks that could occur in your servers, apps, network, and devices. This help you can determine how robust the systems are and acquire information on how to fix the vulnerabilities.

According to our review, the top penetration testing companies are BreachLock, ScienceSoft, and ThreatSpike Labs.

How Did We Choose the Best Penetration Testing Company?

At Guru99, we are committed to delivering credible, accurate, and relevant information. Our editorial focus ensures that the content we provide is reliable and objective, answering your questions with precision. I dedicated over 30 hours to researching and selecting the best penetration testing companies, prioritizing key factors such as industry reputation, client reviews, certifications, and the variety of services offered. Our selection process also evaluates their expertise in web applications, network security, and more. We focus on the following factors while reviewing a tool based on security, reliability, and the commitment to high standards, ensuring that we feature only the most trustworthy firms. Below are the factors that we focus at when choosing the right penetration testing company:

• Experience: Our team chose companies based on their extensive experience in the cybersecurity industry and proven success in penetration testing.
• Certifications: We made sure to shortlist companies with certified professionals who are recognized in the industry for their skills and expertise.
• Tools and Methodologies: The experts in our team selected the tools based on their adaptability, ensuring efficient and thorough testing methodologies.
• Customer Reviews: We chose companies based on feedback from previous clients, ensuring high customer satisfaction and consistent results.
• Response Time: Our team paid close attention to companies with a rapid response time to resolve issues quickly and effectively.
• Comprehensive Services: We selected companies that offer a wide range of penetration testing services, ensuring a well-rounded security solution.

What are the different types Of Penetration Testing?

Here are the different types of penetration testing services:

• Internal testing: This type of evaluation lets the tester accesses an application from behind the secured firewall and simulate an attack as an in-house attacker.
• External testing: In such a testing scenario Penetration testing service provider targets the assets of the organization that is available on the company’s website, email, DNS, or web application.
• Targeted testing: Using this penetration testing service, the engineer and the security team or personnel can work together to find vulnerabilities and keep each other informed in real time.
• Blind testing: In blind testing, the best pen testers are provided with the name of the targeted enterprise. This offers the security team a real-time view of what an actual attack will look like.
• Double-blind testing: It is performed without informing the security team, just like in a real-life scenario.

Benefits of Penetration Testing

The benefits of penetration testing are:

• Identify vulnerabilities and real risks: Pen test companies help in identifying the existing vulnerabilities so that you can create a more robust security system. It also shows the true risks and allows you to understand how an attacker could exploit it.
• Business continuity: Using penetrating testing services, you can ensure that your business will run smoothly, as it will help you take care of the possible threats before it occurs.
• Compliance: With the help of pen testing companies, you get a complete report on your complaints so you can steer clear of penalties.
• Protection for delicate information: Businesses have several confidential data which can affect everyone associated with the company. Thus, penetration testing services provide security to all clients, employees, and stakeholders’ data.
• Reputation: When you do regular penetration testing, you can keep up a good reputation as it builds trust among the clients and others associated with your company.

FAQs