Top 100 Penetration Testing Services
The Best of December 2025Looking 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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31$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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32$25,000+250 - 999 employeesKraków, PolandTechMagic is an application development company. Their midsize team is located in Kraków, Poland; Sausalito, California; Brookline, Massachusetts and London, England. Their services include Mobile App Development, Custom Software Development, Web Development, Artificial Intelligence, and more. The agency was established in 2014.Read More
Clients
MHC Healthcare Huckleberry Labs Tiro.Health eType CareIndustries
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33$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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34$50,000+50 - 249 employeesRead More
Mad Devs is a digital development company based in Cambridge, England, and founded in 2016. Their team of 35 employees specializes in custom software development, web development, and cloud consulting. They mainly work with small businesses and midmarket clients in the consumer products, education, and business services industries.
Clients
ClutchIndustries
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35$50,000+50 - 249 employeesNew York, NYKualitatem Inc. Is a midsize Application Testing company. The New York, New York-based company was established in 2010. Their team focuses on Application Testing and Cybersecurity.Read More
Clients
Ted Talks Exterro Riyad Bank BBDOIndustries
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36$1,000+10 - 49 employeesTârgu Mureș, RomaniaH-X Technologies is a Cybersecurity company launched in 2015. Their small team is headquartered in Târgu Mureș, Romania. The firm focuses on Cybersecurity, Blockchain, IoT development, cloud consulting & SI, and more.Read More
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37$25,000+1,000 - 9,999 employeesTallinn, EstoniaRead More
ELEKS is a custom software development firm established in 1991. Their large team is in Tallinn, Estonia; L'viv, Ukraine; Berlin, Germany and Rzeszów, Poland. Their services include Custom Software Development, BI & big data consulting & SI, cloud consulting & SI, Cybersecurity, and more.
Clients
BNY Mellon DPD Acino DRAXIndustries
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38$1,000+10 - 49 employeesPark Ridge, ILRead More
Realnets is a small IT managed services company founded in 1998. Their services include IT managed services, Cybersecurity, IT strategy consulting, cloud consulting & SI, and more. The firm is in Park Ridge, Illinois.
Clients
Navitor Swissport DLS Internet GreystarIndustries
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39$5,000+1,000 - 9,999 employeesBelrose, AustraliaRead More
ERRNA is a blockchain company founded in 2015. The small San Jose, California-based team provides blockchain, cybersecurity, marketing strategy, mobile app development, and more.
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40$10,000+250 - 999 employeesSouthborough, MAAI Agents company Trigent Software - Mobile App Development & Data Engineering Services was established in 1995. They are in Southborough, Massachusetts and Bengaluru, India and have a midsize team. Their services include AI Agents, BI & big data consulting & SI, Web Development, Custom Software Development, and more.Read More
Clients
NavistarIndustries
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41$1,000+50 - 249 employeesBaltimore, MDIT managed services company Klik Solutions was established in 2012. The company offers IT managed services, cloud consulting & SI, and Cybersecurity and has a midsize team.Read More
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42$1,000+50 - 249 employeesFaridabad, IndiaRead More
Bug Hunters is an Application Testing company established in 2015. Their midsize team is in Faridabad, India; Birmingham, England; Calgary, Canada and Noida, India and provides Application Testing and Cybersecurity.
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43$10,000+1,000 - 9,999 employeesCluj-Napoca, RomaniaAROBS is a large software development firm launched in 1998. Their team provides Custom Software Development, Cybersecurity, Enterprise App Modernization, AI Agents, and more. The agency is headquartered in Cluj-Napoca, Romania; Budapest, Hungary; Chișinău, Moldova and Ulvenhout, Netherlands.Read More
Clients
GIATA GmbHIndustries
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44$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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45$50,000+1,000 - 9,999 employeesŁódź, PolandRead More
Infopulse is an end-to-end digital services and advisory company based in Ukraine with additional offices across Europe and the Americas. Founded in 1991, their team of 2,300+ specialists offers solution engineering, managed services, innovation services, digital experience & intelligent business solutions. They work with SMBs and Fortune 100 enterprises, focusing on banking, energy, oil & gas, healthcare, telecom, information technology, and other industries.
Clients
BICSIndustries
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46$5,000+10 - 49 employeesMelbourne, AustraliaRead More
Stratus Security is a cybersecurity company. They are in Melbourne, Australia and Brisbane, Australia and have a small team. Their services include cybersecurity and cloud consulting & SI.
Clients
WhaleSwapIndustries
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47$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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48$5,000+10 - 49 employeesRead More
Dysnix is an IT company in New York and Kharkiv, Ukraine. Founded in 2013, they have about 9 employees that serve mostly small-business and midmarket clients in the financial, gambling, and IT sectors. Services include AI, cloud consulting, and custom software development.
Clients
Blockchain ETLIndustries
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49$50,000+50 - 249 employeesL'viv, UkraineVaryence is a web development company. The midsize team is based in L'viv, Ukraine; New York, New York and Split, Croatia. Their services include Web Development, Custom Software Development, Mobile App Development, IT strategy consulting, and more.Read More
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50$5,000+50 - 249 employeesLondon, EnglandLocated in London, England and Düsseldorf, Germany, Transputec Ltd is a Cybersecurity company. The midsize agency was launched in 1986. Their services include Cybersecurity, IT managed services, Artificial Intelligence, cloud consulting & SI, and more.Read More
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51$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.
Clients
National Guardian Life InsuranceIndustries
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52$5,000+2 - 9 employeesNew York, NYRead More
Virtue Security is an application penetration testing company based in New York. The company, founded in 2012, has a team of around ten that provides cybersecurity services to small and mid-market companies in the financial services, health care & medical, and energy & natural resources industries.
Clients
The BoscoIndustries
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53$5,000+10 - 49 employeesSan Jose, CARead More
Launched in 2010, TruAdvantage is an IT managed services company. Based in San Jose, California and San Francisco, California, their small team provides IT managed services, cloud consulting & SI, Cybersecurity, and IT strategy consulting.
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54$5,000+10 - 49 employeesEdinburgh, ScotlandLaunched in 2012, Texaport is an IT managed services company. The small team provides IT managed services, Cybersecurity, cloud consulting & SI, IT strategy consulting, and more. The firm is headquartered in Edinburgh, Scotland; Glasgow, Scotland; London, England and Manchester, England.Read More
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55$1,000+50 - 249 employeesBothell, WAISOutsource is an IT managed services company. The midsize Bothell, Washington-based company was established in 1992. Their team specializes in IT managed services, IT strategy consulting, Cybersecurity, cloud consulting & SI, and more.Read More
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56$25,000+50 - 249 employeesSalford, EnglandIn Salford, England; London, England and Houston, Texas, Digiryte is a cloud consulting & SI company. They focus on cloud consulting & SI, Mobile App Development, Custom Software Development, Digital Strategy, and more and were founded in 2016.Read More
Clients
NHSIndustries
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57$1,000+10 - 49 employeesScottsdale, AZRead More
MYTEK Network Solutions, a custom software development firm, was founded in 2009. They are based in Scottsdale, Arizona and have a midsize team. Their services include custom software development, application management & support, and IT strategy consulting.
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58$1,000+2 - 9 employeesRead More
Anthony Timbers LLC is a cybersecurity solutions company based in Herndon, Va. Founded in 2020, they continue to provide cybersecurity, IT strategy consulting, and IT managed services to primarily small and midmarket-sized businesses. They have fewer than 10 employees who serve clients in the IT industry, among others.
Clients
Department of Army - Software Assurance (Code Security Review) ServicesIndustries
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59Undisclosed50 - 249 employeesNew York, NYBreachLock Inc is an Application Testing company. Launched in 2019, the midsize agency is based in New York, New York; Amsterdam, Netherlands and London, England. Their team offers Application Testing, Cybersecurity, and DevOps Managed Services.Read More
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60$1,000+10 - 49 employeesKraków, PolandRead More
Sisoft sp. Z o.o., a Cybersecurity company, is headquartered in Kraków, Poland. The small firm was established in 2006. Their team offers Cybersecurity, Compliance Consulting, and Business Continuity Management.
Industries
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