Best Penetration Testing Services

How Many Penetration Testing Services Products Does G2 Track?

Total Products under this Category: 263

Category Stats (Sep 2026)

  • Average Rating: 4.75/5 The average rating of products in this category, based on all submitted ratings
  • Top Trending Product: Thoropass Pentesting (+1.54%) - Among all products in this category, Thoropass Pentesting recorded the largest rating increase compared to last month

Last updated: September 15, 2026

How Does G2 Rank Penetration Testing Services Products?

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G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

G2 Grid® for Penetration Testing Services

G2 Grid® for Penetration Testing Services plotting products by satisfaction and market presence

Highlighted products: PlutoSec, CyStack Security Services, Vynox Security PTaaS, ThreatSpike, CyberFortify, Insight Assurance, Vumetric Cybersecurity, and Packetlabs.

Underlying data: [Grid® JSON](https://www.g2.com/categories/penetration-testing-services/grids.json?focus%5B%5D=plutosec&focus%5B%5D=cystack-security-services&focus%5B%5D=vynox-security-ptaas&focus%5B%5D=threatspike&focus%5B%5D=cyberfortify&focus%5B%5D=insight-assurance&focus%5B%5D=vumetric-cybersecurity&focus%5B%5D=packetlabs-ltd-packetlabs)

PlutoSec

PlutoSec is a Canadian-based cybersecurity company that specializes in offensive security services, specifically designed to help organizations identify vulnerabilities and assess risks within their digital environments. The company focuses on penetration testing for various platforms, including web applications, APIs, cloud infrastructure, networks, and operating systems. By simulating real-world attacks, PlutoSec enables businesses to understand their security posture and take proactive measures to safeguard their critical digital assets. Targeting a diverse range of industries, including healthcare, finance, real estate, and technology, PlutoSec caters to organizations that prioritize cybersecurity and compliance. The services offered are particularly beneficial for businesses that handle sensitive data or operate within regulated environments. By leveraging industry standards such as the OWASP Top 10, NIST SP 800-115, and MITRE ATT&CK, PlutoSec ensures that its assessments are thorough and aligned with best practices in cybersecurity. One of the key features of PlutoSec's offerings is its comprehensive penetration testing services. These tests are designed to uncover vulnerabilities that could be exploited by malicious actors, providing organizations with a clear understanding of their security weaknesses. Following each assessment, clients receive detailed reports that outline the findings and provide actionable recommendations for remediation. This approach not only helps organizations to address immediate security concerns but also fosters a culture of continuous improvement in their cybersecurity practices. In addition to penetration testing, PlutoSec offers ongoing security advisory services to support organizations in maintaining a robust security posture. This includes guidance on compliance requirements, risk management strategies, and the implementation of security best practices. By partnering with PlutoSec, clients gain access to expert insights and support that can enhance their overall security framework and resilience against cyber threats. Overall, PlutoSec stands out in the cybersecurity landscape by combining technical expertise with a client-centric approach. The company’s commitment to delivering high-quality services, detailed reporting, and continuous support positions it as a trusted partner for organizations seeking to enhance their cybersecurity defenses and ensure compliance with industry standards.

Average Rating: 5.0/5.0

Total Reviews: 47

Who Is the Company Behind PlutoSec?

  • Seller: PlutoSec
  • Year Founded: 2019
  • HQ Location: Toronto, CA
  • LinkedIn® Page: www.linkedin.com
    32 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Health, Wellness and Fitness, Hospitality
  • Company Size: 74% Medium, 17% Large

What Are Recent G2 Reviews of PlutoSec?

CyStack Security Services

CyStack Security Services is a set of solutions to help businesses manage their digital security. We offer a clear way to check, fix and watch over a company's security to keep data and systems safe. Our services are for all kinds of businesses, from small startups to big companies, that need help with security. The main goal is to protect a business, stop data leaks, and meet industry standards. CyStack offers its services through two distinct models, each tailored to specific business needs: Security Assessment Consulting: - What it is: A one-time project to check your systems for weak points. - How it helps: You get a simple report with clear steps to improve your security. - Value: It helps you find and fix problems before they become a bigger issue. Managed Security Services (MSSP): - What it is: Ongoing, 24/7 security monitoring. - How it helps: A team of experts watches for threats and responds fast. - Value: It lowers the risk of cyberattacks and limits damage when an incident happens. No matter if you need a quick check or full-time protection, CyStack gives you the tools and support to secure your business and help it grow.

Average Rating: 4.9/5.0

Total Reviews: 22

Who Is the Company Behind CyStack Security Services?

  • Seller: CyStack
  • Year Founded: 2017
  • HQ Location: Hanoi, VN
  • Twitter: @CyStackSecurity
    35 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    49 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Information Technology and Services
  • Company Size: 45% Small, 32% Medium

What Are Recent G2 Reviews of CyStack Security Services?

Vynox Security PTaaS

Vynox Security is a next-generation cybersecurity partner helping organizations protect digital assets, achieve compliance faster, and strengthen customer trust. We deliver deep, manual-first security assessments enhanced by artificial intelligence to uncover, validate, and prioritize the vulnerabilities that automated scanners miss. Our core expertise lies in Vulnerability Assessment and Penetration Testing (VAPT) across web, mobile, cloud, API, and network environments. Every engagement combines automated coverage with expert manual exploitation and business-logic analysis to reveal real-world risk, not false positives. Findings are translated into clear remediation guidance and mapped to frameworks such as ISO 27001, SOC 2, PCI DSS, and GDPR. Each engagement ends with an audit-ready report and a complimentary retest cycle to verify closure. Vynox goes beyond testing. Through its Virtual CISO (vCISO) and Governance, Risk & Compliance (GRC-as-a-Service) programs, the company provides strategic oversight, policy development, and continuous control monitoring that keep clients compliant and resilient year-round. Core Services • Manual-first + AI-assisted Penetration Testing (Web, Mobile, Cloud, Network) • API and Source-Code Security Review • Cloud Security Posture Assessment (AWS, Azure, GCP) • Virtual CISO Advisory and Security Program Development • Governance, Risk & Compliance (GRCaaS) • Executive and Technical Reporting with Retest Validation Why Teams Choose Vynox • Manual depth with AI efficiency for maximum coverage • Compliance-aligned outputs that simplify audits • Agile delivery and direct access to senior analysts • End-to-end security visibility from testing to governance Vynox Security transforms penetration testing from a checkbox exercise into a continuous, measurable business advantage, helping companies ship secure products, clear audits confidently, and maintain lasting resilience in a constantly evolving threat landscape.

Average Rating: 4.6/5.0

Total Reviews: 16

Who Is the Company Behind Vynox Security PTaaS?

Who Uses This Product?

  • Top Industries: Computer Software
  • Company Size: 76% Small, 18% Medium

What Are Recent G2 Reviews of Vynox Security PTaaS?

ThreatSpike

ThreatSpike is the world's first AI-managed IT and security platform, replacing the legacy MSP model entirely. Delivered as a single fixed-price subscription, ThreatSpike manages and defends the entire technology estate; combining fully managed IT, complete defensive security and unlimited offensive security testing in one platform, run by one team, at one predictable price. As the first company to operate as both technology vendor and service provider simultaneously, ThreatSpike ships fixes directly into the platform the moment problems are found so that every customer benefits immediately, at no extra charge. Agentic AI runs through every layer of operations, proactively identifying issues, driving faster resolution and continuously improving every environment it manages. ThreatSpike serves 400+ customers across 90+ countries and is headquartered in the UK, certified to ISO 27001, PCI-DSS and CREST standards.

Average Rating: 4.9/5.0

Total Reviews: 36

Who Is the Company Behind ThreatSpike?

  • Seller: ThreatSpike Labs
  • Company Website:
  • Year Founded: 2011
  • HQ Location: London
  • Twitter: @threatspikelabs
    178 Twitter followers
  • LinkedIn® Page: uk.linkedin.com
    96 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Hospitality
  • Company Size: 39% Medium, 28% Small

What Are Recent G2 Reviews of ThreatSpike?

CyberFortify

CyberFortify is a cybersecurity firm specializing in customized security services to protect businesses from evolving threats. It offers services like penetration testing, vulnerability assessments, compliance audits, and social engineering simulations. CyberFortify's mission is to empower businesses with cutting-edge security strategies that anticipate, prevent, and combat cyber threats, ensuring the protection of data, systems, and reputation.

Average Rating: 4.8/5.0

Total Reviews: 21

Who Is the Company Behind CyberFortify?

Who Uses This Product?

  • Top Industries: Computer Software
  • Company Size: 76% Small

What Are Recent G2 Reviews of CyberFortify?

Insight Assurance

Insight Assurance is a global cybersecurity and compliance firm that supports organizations across industries in navigating complex regulatory frameworks with clarity and confidence. Our team brings extensive experience from top public accounting firms—including Big 4 backgrounds—to deliver high-quality audit and advisory services aligned with SOC 2, ISO 27001, PCI DSS, HITRUST, and other industry standards. We serve startups, large enterprises, and public sector entities with a flexible, collaborative approach that emphasizes risk awareness, operational integrity, and long-term resilience. As an independent third-party, we are committed to helping organizations meet their compliance responsibilities without compromising on quality or trust. Delivering Quality, Assuring Trust.

Average Rating: 4.9/5.0

Total Reviews: 145

Who Is the Company Behind Insight Assurance?

  • Seller: Insight Assurance
  • Company Website:
  • Year Founded: 2020
  • HQ Location: Tampa, FL
  • LinkedIn® Page: www.linkedin.com
    200 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Computer Software, Information Technology and Services
  • Company Size: 52% Small, 32% Medium

What Are Recent G2 Reviews of Insight Assurance?

Vumetric Cybersecurity

Vumetric is an ISO9001-certified boutique provider entirely dedicated to penetration testing, with more than 15 years of experience in the industry. Our methodologies are proven and our understanding of cybersecurity risks is extensive, allowing us to provide clear advice to our clients that is pragmatic, adapted to their needs and efficient in securing against the latest security threats. We bring proven best practices to every project and have delivered our services across five continents. Our clients include Fortune 1000, SMEs and government agencies. Our goal is to provide best-in-class cybersecurity assessment services to help organizations protect themselves from ever-changing cyber threats. We aim to become leaders in our industry by promoting standards and best practices, as well as raising awareness about cyber risks that impact modern organizations.

Average Rating: 4.8/5.0

Total Reviews: 20

Who Is the Company Behind Vumetric Cybersecurity?

  • Seller: Telus
  • Year Founded: 1990
  • HQ Location: Vancouver, CA
  • Twitter: @TELUS
    120,594 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    39,014 employees on LinkedIn®
  • Ownership: NYSE: TU

Who Uses This Product?

  • Company Size: 50% Small, 40% Medium

What Are Recent G2 Reviews of Vumetric Cybersecurity?

Packetlabs

Most penetration tests stop at automated vulnerability scans and a few exploit attempts. We don’t. Packetlabs has completed over 2,500 engagements, delivering CREST-accredited, SOC 2 Type II attested penetration testing and adversary simulation for organizations that need proof of real risk, with verified findings, clear remediation, and no false positives. Our in-house team uses a 95% manual testing approach to uncover real attack paths, validate exploitability, and connect findings to business impact. From infrastructure and cloud to web apps, APIs, mobile, AI/LLM systems, social engineering, red teaming, and security assessments, Packetlabs helps security, IT, and engineering teams understand what attackers could actually reach and what to fix first. Every engagement is designed to produce clear, actionable reporting for technical teams and leadership, with remediation guidance, report walkthroughs, and retesting to help prove measurable risk reduction.

Average Rating: 4.9/5.0

Total Reviews: 25

Who Is the Company Behind Packetlabs?

  • Seller: Packetlabs Ltd.
  • Company Website:
  • Year Founded: 2011
  • HQ Location: Toronto, Ontario, Canada
  • Twitter: @pktlabs
    338 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    79 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Financial Services
  • Company Size: 48% Medium, 36% Small

What Are Recent G2 Reviews of Packetlabs?

What Are G2 Users Discussing About Packetlabs?

ioSENTRIX

ioSENTRIX is a cybersecurity services company specializing in penetration testing, Penetration Testing as a Service (PTaaS), application security, red teaming, and compliance assessments. Founded in 2017 and headquartered in Herndon, Virginia, ioSENTRIX serves enterprises, startups, fintech companies, healthcare organizations, and government agencies with continuous, on-demand security testing that combines AI-augmented scanning with expert-led manual testing. ioSENTRIX offers over 50 types of penetration tests spanning web applications, mobile apps, APIs, SaaS platforms, cloud infrastructure (AWS, Azure, GCP), IoT and ICS/SCADA systems, thick client applications, and internal and external networks. The company's hybrid testing methodology uses AI-driven automation for speed and coverage alongside CREST-accredited, OSCP-certified penetration testers who perform deep manual testing for business logic flaws, chained attack paths, and real-world exploitation scenarios. The company's PTaaS platform provides two flexible engagement models: subscription-based plans for organizations requiring continuous testing throughout the year, and credit-based plans that allow teams to allocate testing credits across multiple assets on demand. Both models include real-time results delivery, retesting capabilities, DevOps and CI/CD pipeline integration, and audit-ready reporting aligned with SOC 2, ISO 27001, PCI DSS, HIPAA, and FedRAMP compliance frameworks. Beyond penetration testing, ioSENTRIX provides application security services including DAST, SAST, and IAST assessments, secure SDLC consulting, and OWASP Top 10 remediation guidance. The company also offers AI and LLM security testing for organizations deploying generative AI applications, covering prompt injection, model manipulation, data leakage, and alignment with the OWASP Top 10 for Large Language Models. Additional services include red team engagements, social engineering assessments, vCISO (Virtual CISO) advisory, Application Security as a Service (ASaaS), and cybersecurity staff augmentation. ioSENTRIX is CREST-accredited for penetration testing services, a designation earned through rigorous evaluation of the company's testing methodologies, quality assurance processes, and professional standards. The company's founder, Omair Manzoor, brings over 14 years of cybersecurity experience from leadership roles at Amazon Lab126, Cigital (now Synopsys), and Tellabs. He is a published security researcher whose exploits are integrated into industry-standard frameworks including Metasploit and Immunity Canvas, and has delivered security briefings to the Department of Defense (DOD) and CISA. ioSENTRIX delivers audit-ready penetration testing reports compatible with compliance platforms including Drata and Vanta, and aligned with Big 4 auditing standards. The company's client portfolio spans Fortune 500 enterprises, financial institutions, SaaS companies, healthcare providers, and high-growth startups requiring investor-ready security validation. All engagements include detailed remediation guidance, executive summaries, and free retesting to verify that identified vulnerabilities have been properly addressed.

Average Rating: 4.9/5.0

Total Reviews: 12

Who Is the Company Behind ioSENTRIX?

  • Seller: ioSENTRIX
  • Company Website:
  • Year Founded: 2017
  • HQ Location: Herndon, VA, US
  • LinkedIn® Page: www.linkedin.com
    16 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 33% Large, 33% Medium

What Are Recent G2 Reviews of ioSENTRIX?

Stingrai Inc.

Stingrai helps companies prevent breaches by simulating real-world attacks through penetration testing. You can choose a traditional annual, compliance-driven pentest or upgrade to continuous penetration testing, where every code change, feature update, and release is tested in real time against real-world attack techniques. Unlike once-a-year testing, continuous pentesting secures your environment year-round for an affordable fixed annual fee. Powered by our worldclass white-hat hackers and PTaaS platform, ensuring your defenses evolve alongside emerging threats. → Network Penetration Testing → Web and API Penetration Testing → Mock Phishing Security Assessment → Active Directory Security Assessment → Wi-Fi Security Assessment → Physical Perimeter Security Assessment Our Penetration Testing as a Service (PTaaS) platform empowers engineering and security teams to track vulnerabilities, seamlessly integrate with existing ticketing systems, and collaborate with our expert white-hat hackers to close security gaps continuously.

Average Rating: 4.9/5.0

Total Reviews: 10

Who Is the Company Behind Stingrai Inc.?

  • Seller: Stingrai
  • Year Founded: 2021
  • HQ Location: Toronto, CA
  • LinkedIn® Page: www.linkedin.com
    11 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 50% Small, 10% Medium

What Are Recent G2 Reviews of Stingrai Inc.?

Thoropass Pentesting

Thoropass offers expert-led, audit-ready penetration testing with tailored scoping, thorough manual testing, and clear remediation guidance. Backed by CREST-accredited specialists, Thoropass delivers high-quality reports and unlimited retesting to help teams improve security and meet compliance requirements efficiently. Ideal for organizations needing reliable testing across web, mobile, API, network, cloud, and AI/LLM environments.

Average Rating: 4.6/5.0

Total Reviews: 13

Who Is the Company Behind Thoropass Pentesting?

  • Seller: Thoropass
  • Year Founded: 2019
  • HQ Location: New York
  • Twitter: @thoropass
    379 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    206 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 69% Small, 31% Medium

What Are Recent G2 Reviews of Thoropass Pentesting?

Appsecco

Use Appsecco to hack your products before attackers do. Our PenTest as a Service (PTaaS) is built for cloud hosted product teams who need product security beyond compliance. You are a fit for us - If you have customers who will use their VAPT to test your claims of product security - If you are building in a regulated industry where basic compliance driven VAPT falls short The best way to ensure your product’s security is to let us hack it like real world attackers would. Our Service is unique. We focus on plugging the true gaps, your product is safe from real world attackers letting you focus on building and shipping. Testing that is far beyond simplistic compliance checklists, bug bounty and automated scanners which lack context​ using the same techniques used by sophisticated hackers.

Average Rating: 4.8/5.0

Total Reviews: 14

Who Is the Company Behind Appsecco?

  • Seller: Appsecco Ltd
  • Year Founded: 2013
  • HQ Location: Dover, Delaware
  • Twitter: @appseccouk
    1,924 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    9 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 36% Medium, 29% Small

What Are Recent G2 Reviews of Appsecco?

Red Sentry

Red Sentry is a penetration testing and offensive security services solution that helps organizations identify, validate, and remediate real cybersecurity vulnerabilities through expert-led testing. Red Sentry operates in the cybersecurity and information security services category and is designed for organizations that need to assess the effectiveness of their security controls beyond automated vulnerability scanning. The service is commonly used by security teams, IT leaders, compliance managers, and engineering teams to evaluate applications, APIs, cloud infrastructure, and internal or external networks. Penetration testing engagements are performed by experienced ethical hackers who simulate real-world attack scenarios to determine whether vulnerabilities can be exploited in practice. Automation is used to support test execution, coordination, and reporting, while human expertise is responsible for attack logic, validation, and risk assessment. This approach helps organizations distinguish theoretical issues from exploitable security gaps. Red Sentry is frequently used to support security assurance, third-party risk management, and regulatory or contractual requirements. The service aligns with common security frameworks and standards such as OWASP and NIST and is often used in preparation for or in support of compliance efforts including SOC 2, ISO 27001, HIPAA, PCI-DSS, and FDA cybersecurity expectations. The solution is applicable across industries such as SaaS, financial services, healthcare, education, and professional services, particularly for organizations that manage sensitive data or operate in regulated environments. Key capabilities and characteristics include: · Human-led penetration testing across web applications, APIs, cloud environments, and networks · Validation of vulnerabilities through real attack simulation rather than automated scanning alone · Structured reporting with severity ratings, evidence of exploitation, and remediation guidance · Support for compliance-driven penetration testing and audit preparation · A penetration testing as a service (PTaaS) delivery model that standardizes engagement workflows Red Sentry helps organizations understand their true security exposure, prioritize remediation efforts, and document security testing results for internal stakeholders, customers, and auditors. By focusing on exploitability and real-world risk, the service supports informed decision-making around security investments and risk management.

Average Rating: 4.8/5.0

Total Reviews: 18

Who Is the Company Behind Red Sentry?

  • Seller: Red Sentry
  • Year Founded: 2020
  • HQ Location: Atlanta, US
  • Twitter: @redsentry_tech
    2,049 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    32 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 37% Small, 32% Medium

What Do G2 Reviewers Say About Red Sentry?

AI-generated summary from verified user reviews

Pros
  • Users value the pentesting efficiency of Red Sentry, appreciating its seamless automation and thorough vulnerability detection.
  • Users appreciate the meaningful vulnerability detection of Red Sentry, enhancing security through insightful notifications and automated scanning.
  • Users value the efficiency of Red Sentry, with continuous scanning and monitoring for optimal security management.
  • Users value the excellent guidance from Red Sentry, making complex security processes accessible and manageable for all stakeholders.
  • Users find Red Sentry's support team and processes straightforward, simplifying penetration testing and vulnerability scanning effectively.
Cons
  • Users find Red Sentry has limited customization options, making it harder to tailor monitoring to specific needs.
  • Users note that Red Sentry has a limited scope in data leak coverage and customization options, restricting its effectiveness.
  • Users find the complexity of integrating Red Sentry adds to costs and limits customization and data leak coverage.
  • Users experience false positives with Red Sentry, leading to unnecessary resource expenditure on non-existent risks and vulnerabilities.
  • Users find the lack of integration with existing systems complicates setup and increases overall costs.

What Are Recent G2 Reviews of Red Sentry?

What Are G2 Users Discussing About Red Sentry?

ThinkSys

ThinkSys is the trusted QA partner for SaaS companies needing reliable quality without slowing down development. We combine experienced QA engineers, proven frameworks, and AI-augmented testing, all backed by our Zero Critical Bugs Guarantee.

Average Rating: 5.0/5.0

Total Reviews: 55

Who Is the Company Behind ThinkSys?

  • Seller: ThinkSys
  • Year Founded: 2012
  • HQ Location: Sunnyvale, US
  • Twitter: @thinksysinc
    4,399 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    453 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: CEO, Chief Executive Officer
  • Company Size: 47% Small, 35% Medium

What Are Recent G2 Reviews of ThinkSys?

Bugthrive Labs

Bugthrive is a cybersecurity training platform that provides hands-on labs, bug bounty training, ethical hacking challenges, penetration testing labs, web application security training, and real-world cybersecurity learning environments. Designed for aspiring ethical hackers, security researchers, bug bounty hunters, SOC analysts, and cybersecurity professionals, Bugthrive helps users build practical skills in vulnerability assessment, offensive security, web security testing, bug hunting, and application security. Through interactive labs, realistic attack simulations, and real-time bug bounty machines, learners gain experience that supports cybersecurity certifications, technical interviews, red team training, and career development. Whether you're preparing for bug bounty programs, penetration testing engagements, security research, or cybersecurity jobs, Bugthrive delivers practical, job-ready cybersecurity education through immersive and industry-relevant training experiences.

Average Rating: 4.7/5.0

Total Reviews: 8

Who Is the Company Behind Bugthrive Labs?

  • Seller: BUGTHRIVE
  • Year Founded: 2025
  • HQ Location: Vishakhapatnam, IN
  • LinkedIn® Page: www.linkedin.com
    4 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 88% Small, 13% Large

What Are Recent G2 Reviews of Bugthrive Labs?

Lauren Worth
LW
Researched and written by Lauren Worth
Updated October 3, 2024