Top 80 Penetration Testing Companies in Chicago
The Best of December 2025Looking for a top penetration testing company in Chicago?
Having vulnerable security poses a threat to your organization. In an age where data has become some of the most important assets that your company will have, improving security measures is always a must. Penetration testing aims to solve this problem by simulating real-life security breaches without the risk of an actual cyberattack. Also known as ethical hacking, this process helps identify weak spots within your IT network infrastructure by applying methods that real attackers would use.
A penetration testing company can assist you in determining your security vulnerabilities. Doing so will provide you with the information that you need to fortify your cybersecurity. Hiring the right penetration testing company can give you a significant advantage in safekeeping your virtual assets.
To assist you in your search for a partner, we’ve compiled this list of the top penetration testing services in Chicago. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best Chicago Penetration Testing Services
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1$1,000+50 - 249 employeesChicago, ILFounded in 1981, Corporate Technologies is an IT managed services company. Based in Eden Prairie, Minnesota; Fargo, North Dakota; San Diego, California and Ada, Michigan, their midsize team provides IT managed services, cloud consulting & SI, and Cybersecurity.Read More
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2$25,000+1,000 - 9,999 employeesChicago, ILRead 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.
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BNY Mellon DPD Acino DRAXIndustries
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3$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.
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Navitor Swissport DLS Internet GreystarIndustries
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4$5,000+10 - 49 employeesChicago, ILRead More
TechNoir Solutions is a Chicago-based managed IT services provider. They were founded in 2012 and have a team of 12 employees who specialize in cloud consulting, IT managed services, and cybersecurity.
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Primrose PreschoolsIndustries
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5$5,000+10 - 49 employeesPark Ridge, ILRead More
Founded in 2009, XL.net is an IT managed services company based in Park Ridge, Ill. Their team primarily works with small businesses from the nonprofit, manufacturing, and financial services industries.
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D/C Export & Domestic Packing, Inc.Industries
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6$5,000+50 - 249 employeesChicago, ILBased in Chicago, Illinois; Phoenix, Arizona and Athina, Greece, EMPIST is an IT managed services company. The midsize company was founded in 2000. Their team specializes in IT managed services, IT strategy consulting, Cybersecurity, and cloud consulting & SI.Read More
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7$5,000+1,000 - 9,999 employeesChicago, ILSikich is a Chicago, Illinois-based Cybersecurity company. The firm focuses on Cybersecurity, IT managed services, ERP consulting and SI, and Compliance Consulting and is large.The firm was established in 1982.Read More
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8Undisclosed250 - 999 employeesNorth Little Rock, ARAscend Technologies is an IT managed services company. They are in North Little Rock, Arkansas; Lincoln, Nebraska; Chicago, Illinois and Bentonville, Arkansas and have a midsize team. Their services include IT managed services, IT strategy consulting, cloud consulting & SI, CRM consulting and SI, and more.Read More
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9$1,000+10 - 49 employeesDes Plaines, ILEstablished in 2000, JetRails is a cloud consulting & SI company. The firm focuses on cloud consulting & SI, IT managed services, Cybersecurity, and IT strategy consulting and has a small team. The firm is headquartered in Des Plaines, Illinois.Read More
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Furniture Land SouthIndustries
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10$1,000+10 - 49 employeesChicago, ILIT managed services company Protek-IT is headquartered in Chicago, Illinois. The small firm was established in 2003. Their services include IT managed services, IT strategy consulting, and Cybersecurity.Read More
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11Undisclosed50 - 249 employeesAddison, ILBraden Business Systems, an IT strategy consulting company, was launched in 1989. The team provides IT strategy consulting and cloud consulting & SI.Read More
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Over ten thousand clients nationwideIndustries
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12$5,000+50 - 249 employeesChicago, ILRead More
PSM Partners is an IT managed services company in Chicago, Illinois. The firm provides IT managed services, IT staff augmentation, cloud consulting & SI, unified communications consulting & SI, and more and has a small team.The firm was launched in 2014.
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13$1,000+10 - 49 employeesChicago, ILAdvancedit is a cybersecurity company. Their small team is located in Chicago, IL, USA, Illinois. Their services include cybersecurity. The firm was launched in 2013.Read More
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The AntiCrueltyIndustries
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14Undisclosed10,000+ employeesChicago, ILBDO is a large ERP consulting and SI company established in 1963. Their team offers ERP consulting and SI and Cybersecurity.Read More
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15$5,000+2 - 9 employeesDes Plaines, ILForces Unseen is a Cybersecurity company. Their team is headquartered in Des Plaines, Illinois and provides Cybersecurity.Read More
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16$1,000+50 - 249 employeesRosemont, ILDefendEdge is a Rosemont, Illinois-based Cybersecurity and IT managed services company. They focus on Cybersecurity and IT managed services and were launched in 2017.Read More
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17$5,000+50 - 249 employeesNew York, NYFounded in 1988, Kraft & Kennedy, Inc. Is an IT managed services company. Based in New York, New York and Houston, Texas, the team provides IT managed services and IT strategy consulting.Read More
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Drinker BiddleIndustries
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18Undisclosed250 - 999 employeesChicago, ILNetrix LLC, an IT strategy consulting company, was launched in 1989. The team provides IT strategy consulting and cloud consulting & SI and is located in Chicago, Illinois.Read More
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19$5,000+10 - 49 employeesChicago, ILDatastrive is a Cybersecurity and IT managed services company launched in 2003. The team provides Cybersecurity and IT managed services and is in Chicago, Illinois.Read More
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20Undisclosed10 - 49 employeesOak Brook, ILComputerease is a small IT strategy consulting company established in 1984. Their services include IT strategy consulting and Cybersecurity.Read More
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21$1,000+50 - 249 employeesWillowbrook, ILApplication Management & Support company ESPO Engineering Corp. Provides Application Management & Support and IT managed services. They are located in Willowbrook, Illinois.Read More
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22$1,000+50 - 249 employeesOak Brook, ILIn Elk Grove Village, Illinois and McHenry, Illinois, Porte Brown LLC is a midsize Accounting company. Their services include Accounting and cloud consulting & SI.Read More
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23Undisclosed50 - 249 employeesOak Brook, ILStrategic Solutions, Inc., a midsize Cybersecurity and IT managed services company, is in Oak Brook, Illinois. Their services include Cybersecurity and IT managed services.Read More
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24Undisclosed250 - 999 employeesOak Brook, ILCyberTech Systems and Software, Inc is a Cybersecurity company. They offer Cybersecurity and ERP consulting and SI and are located in Oak Brook, Illinois and Redlands, California.Read More
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25Undisclosed10 - 49 employeesDes Plaines, ILSpot Migration Co is a Cybersecurity company. The team offers Cybersecurity and IT managed services and is headquartered in Des Plaines, Illinois.Read More
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26$1,000+10 - 49 employeesChicago, ILAccuSights is a Cybersecurity company launched in 2025. The team offers Cybersecurity and Compliance Consulting.Read More
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27$10,000+50 - 249 employeesChicago, ILTrekShield is a midsize Chicago, Illinois-based Cybersecurity company. The team focuses on Cybersecurity and Blockchain.Read More
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28Undisclosed50 - 249 employeesChicago, ILAGB Investigative Services, a midsize Cybersecurity and IT managed services company, is in Chicago, Illinois. Their services include Cybersecurity and IT managed services.Read More
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29$5,000+50 - 249 employeesOakbrook Terrace, ILSocial media marketing agency Simplelogix provides Social Media Marketing and cloud consulting & SI. They were founded in 2007.Read More
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30$5,000+10 - 49 employeesRosemont, ILETS Technology Solutions, a small IT managed services company, is headquartered in Rosemont, Illinois. The team focuses on IT managed services and Cybersecurity.Read More
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