Top 100 Penetration Testing Services
The Best of October 2026Looking for a top penetration testing company?
Also known as ethical hacking, penetration testing deals with testing computer systems, networks, and web applications to identify security vulnerabilities. Pen testing simulates real-life security attacks to determine areas that attackers could exploit. Ultimately, it highlights the weaknesses of your company’s IT infrastructure and makes it easier to identify the necessary steps to prevent security breaches.
Hiring a penetration testing company will give you a strategic advantage in bolstering organizational security. Since there are many tools and resources involved in executing penetration tests, working with a penetration testing agency can save you both money and time.
That's why we've created this list of the best penetration testing services for you to review. Read through company descriptions, former clients, and notable projects to find the best fit for your business.
List of the Best Penetration Testing Companies
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1$5,000+10 - 49 employeesAmsterdam, NetherlandsSekurno is a Cybersecurity company. The Tallinn, Estonia-based agency was founded in 2019. The small team offers Cybersecurity.Read More
Clients
RAKwirelessIndustries
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2$10,000+10 - 49 employeesLocated in London, England and Kyiv, Ukraine, XRAY CyberSecurity is a Cybersecurity company. The small team offers Cybersecurity and was founded in 2013.Read More
Clients
Danone Carlsberg VEON SoftwareOneIndustries
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3$10,000+250 - 999 employeesSofia, BulgariaFounded in 2012, Accedia is a midsize custom software development firm headquartered in Sofia, Bulgaria and Boston, Massachusetts. Their services include Custom Software Development, Web Development, Artificial Intelligence, Cybersecurity, and more.Read More
Clients
Castle Trust Bank Lufthansa Technik Shawbrook SKFIndustries
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4$5,000+10 - 49 employeesRzeszów, PolandIterasec is a Cybersecurity company. They are in Rzeszów, Poland and L'viv, Ukraine and have a small team. Their services include Cybersecurity. The agency was launched in 2020.Read More
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5$5,000+10 - 49 employeesKraków, PolandRead More
Established in 2003, SecuRing is a small cybersecurity company based in Kraków, Poland and Warszawa, Poland. Their services include cybersecurity.
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DB SchenkerIndustries
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6$10,000+10 - 49 employeesMontevideo, UruguayCybersecurity company Nexa was launched in 2015. The small team provides Cybersecurity, cloud consulting & SI, and IT managed services. The firm is located in Montevideo, Uruguay; Buenos Aires, Argentina and La Reina, Chile.Read More
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7$5,000+50 - 249 employeesWrocław, PolandFounded in 2014, TestArmy is a Cybersecurity company. The midsize Wrocław, Poland-based team focuses on Cybersecurity, Application Testing, IT strategy consulting, and IT staff augmentation.Read More
Clients
SamsungIndustries
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8$1,000+250 - 999 employeesDallas, TXBased in Dallas, Texas; Louisville, Kentucky; Shreveport, Louisiana and Fort Worth, Texas, IT GOAT is an IT managed services company. The midsize company was founded in 2018. Their team specializes in IT managed services, IT strategy consulting, cloud consulting & SI, and Cybersecurity.Read More
Clients
Quadratic InsightsIndustries
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9$5,000+50 - 249 employeesDeepStrike, a Cybersecurity and Application Testing company, is located in San Francisco, California and San Francisco, California. The midsize team provides Cybersecurity and Application Testing and was established in 2016.Read More
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10$5,000+10 - 49 employeesToronto, CanadaVumetric is a Cybersecurity company. Their small team is headquartered in Toronto, Canada and New York, New York. Their services include Cybersecurity and Application Testing. The agency was launched in 2007.Read More
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11$5,000+10 - 49 employeesOttawa, CanadaRead More
Cybersecurity company Software Secured is in Ottawa, Canada. The small team focuses on Cybersecurity, Application Testing, and AI Consulting and was launched in 2009.
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testIndustries
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12$5,000+2 - 9 employeesWarszawa, PolandRead More
REDTEAM.PL is a software company based in Warsaw, Poland, and founded in 2017. With no more than 10 members, they specialize in cybersecurity, forensic services, and application testing solutions for clients in the fields of healthcare, financial services, and IT solutions.
Clients
The list contains only some of the clients that provided us with official references: Orbis (Accor)Industries
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13Undisclosed50 - 249 employeesOverland Park, KSForesite Cybersecurity is a Cybersecurity company. Their midsize team is based in Overland Park, Kansas and Farnborough, England and specializes in Cybersecurity, Compliance Consulting, cloud consulting & SI, and IT managed services. The agency was launched in 2013.Read More
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14$10,000+50 - 249 employeesToronto, CanadaRead More
Located in Toronto, Canada; San Francisco, California and Calgary, Canada, Packetlabs Ltd. Is a Cybersecurity and Application Testing company. The company provides Cybersecurity and Application Testing and is midsize.The company was launched in 2011.
Clients
ECEBCIndustries
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15$1,000+50 - 249 employeesEden Prairie, MNCorporate Technologies is an IT managed services company established in 1981. Their midsize team is based in Eden Prairie, Minnesota; Fargo, North Dakota; San Diego, California and Ada, Michigan. Their services include IT managed services, cloud consulting & SI, and Cybersecurity.Read More
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16$10,000+1,000 - 9,999 employeesWarszawa, PolandA1qa is a large Application Testing company. Founded in 2003, the company is based in Decatur, Georgia; London, England; Warszawa, Poland and T'bilisi, Georgia. Their services include Application Testing and Cybersecurity.Read More
Clients
AdidasIndustries
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17$5,000+2 - 9 employeesRead More
Cyberlands is an API penetration testing company based in Nieuwegein, Netherlands, with an office in Vancouver, Wash. The company, founded in 2019, has a team of more than ten that provides cybersecurity services to small and mid-market companies in the financial services and IT industries.
Clients
Amaiz (UK FinTech FCA-regulated)Industries
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18Undisclosed50 - 249 employeesSan Ramon, CAParachute Technology, an IT managed services company, was established in 2003. The company focuses on IT managed services, Cybersecurity, and cloud consulting & SI and has a midsize team.Read More
Clients
San Francisco Travel AssociationIndustries
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19$5,000+50 - 249 employeesNew York, NYBit by Bit Computer Consultants is an IT managed services company. In New York, New York; Arlington, Texas and Newton, Massachusetts, their midsize team specializes in IT managed services, Custom Software Development, and Cybersecurity. The agency was founded in 1987.Read More
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20$5,000+50 - 249 employeesEdina, MNRead More
FRSecure is a full-service information security management company based in Minnetonka, Minnesota. Founded in 2008, their team of around 50 employees provides cybersecurity, IT strategy consulting, and IT managed services.
Clients
Mackoff Kellogg Law FirmIndustries
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21$5,000+10 - 49 employeesKyiv, UkraineRead More
Berezha Security Group is a cybersecurity consulting firm founded in 2014 and located in Kyiv, Ukraine, and Krakow, Poland. They specialize in cybersecurity consulting, application security, infrastructure, and social engineering penetration testing. BSG has delivered over 200 projects for more than 100 clients worldwide in all major business sectors, including IT services, software products, banking, fintech, retail, and more industries.
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22$1,000+10 - 49 employeesTârgu Mureș, RomaniaH-X Technologies is a small Cybersecurity company headquartered in Târgu Mureș, Romania. They specialize in Cybersecurity, Blockchain, AI Consulting, and cloud consulting & SI and were established in 2015.Read More
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23$5,000+10 - 49 employeesRead More
Silent Break Security is a cybersecurity firm based in Lehi, Utah, and founded in 2011. Their team of 21 employees specializes in cybersecurity.
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National Guardian Life InsuranceIndustries
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24$10,000+50 - 249 employeesLisboa, PortugalHacken, a Cybersecurity company, was founded in 2017. Their midsize team is based in Kesklinna, Estonia and Lisboa, Portugal. Their services include Cybersecurity, Blockchain, Corporate Training & Coaching, and Compliance Consulting.Read More
Clients
Bybit OKX KuCoin WhiteBitIndustries
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25$1,000+50 - 249 employeesOak Brook, ILBetterWorld Technology is an IT managed services company. Founded in 2003, the midsize company is in Oak Brook, Illinois; Naperville, Illinois; Winter Park, Florida and Denver, Colorado. Their services include IT managed services, Cybersecurity, IT strategy consulting, and Compliance Consulting.Read More
Clients
Mother McAuley Liberal Arts High SchoolIndustries
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26$5,000+50 - 249 employeesAmsterdam, NetherlandsRead More
Tsaaro Solutions is a cybersecurity and internet & technology law company. Their midsize team is in Schiphol-Rijk, Netherlands and Bengaluru, India. The company specializes in cybersecurity and internet & technology law.
Clients
Vodafone, Vistara Airlines, Titan, Flipkart, UST, IBS Software, Amaze Mobility, Moove Connected, 2Solar, Bluvium Technologies, Supari Studios, Buzzoka, Synapsica, Anakage, Mindvalley, Capgrid Solutions, Borderless Access, Ambiya, Kellton Tech.Industries
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27Undisclosed250 - 999 employeesMcKinney, TXNetrio (formerly PCA Technology Group) is an IT managed services company. Their midsize team is located in McKinney, Texas; Buffalo, New York and Golden Valley, Minnesota. The agency specializes in IT managed services, Custom Software Development, and Cybersecurity. The agency was established in 1989.Read More
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28$25,000+50 - 249 employeesKarachi, PakistanBlockApex is a Blockchain company based in Karachi, Pakistan; Balmain, Australia; Dubai, United Arab Emirates and San Francisco, California. The agency focuses on Blockchain, Cybersecurity, Web Development, and Mobile App Development and has a midsize team.The agency was established in 2019.Read More
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29$1,000+10 - 49 employeesHildenborough, EnglandRSK Cyber Security is a Cybersecurity company launched in 2021. The small Hildenborough, England-based team specializes in Cybersecurity, Application Testing, and cloud consulting & SI.Read More
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30$1,000+2 - 9 employeesWoburn, MARead More
Established in 2014, First Class Networks is a business intelligence company. They are located in Woburn, Massachusetts and have a small team. The company provides BI & big data consulting & SI, cloud consulting & SI, cybersecurity, and IT managed services.
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