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Top Cybersecurity Companies

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Looking for the best cybersecurity company in the United States? UpCity compiles authentic reviews, company descriptions, project examples, and more into a list for you to review. Feel confident you're finding the top provider for your business.

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1,025 Provider(s)Last Updated: April 29, 2025
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OP Technology LLC

Huntington Beach, CA, US
Services
Managed Service ProvidersCybersecurity
Business Summary:
OP Technology LLC is your single point of contact for Managed IT Services such as: Computer Network Support, Network Security, IT Outsourcing, Web Design, Tech Support, & more. Call today!
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OSA Technology Partners

Columbus, OH, US
Services
Managed Service ProvidersCybersecurity
Business Summary:
OSA MANAGED SERVICES Your Efficiency Provider From day-to-day IT support, to long term strategic planning, we are the destination for business IT needs. Our SMB platform ensures long term savings through cost analysis and usage statistics, along with simplified onboarding and off boarding for your employees.
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OVESTO

St. Petersburg, FL, US
Services
Cybersecurity
Business Summary:
Ensuring your Organization is Protected from Emerging Threats with our, Virtual CISO, Risk Management & Cyber Security Consultant Services.
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OXEN Technology

Omaha, NE, US
Services
Cloud ConsultingManaged Service ProvidersCybersecurity
Business Summary:
At OXEN Technology, our deep roots and our trusted people make us a strong IT partner and a leading Midwest managed services provider.
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Omega ATC

Chesterfield, MO, US
Services
Cybersecurity
Business Summary:
Omega Adapt comes with a 24x7 Security Operations Center (SOC) to address threats further down the attack chain. Security specialists leverage an AI-based Security Information and Event Management (SIEM) platform to detect and respond to any suspicious activity. Artificial Intelligence is only as good as the data used to train it.
2022 Study: 50% of SMBs Have a Cybersecurity Plan in Place | UpCity

This UpCity study presents insight from 600 U.S. small business owners and IT experts on their latest cybersecurity practices, data breach prevention, and disaster recovery measures in 2022.

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Omni Tek Solutions

San Francisco, CA, US
Services
Cybersecurity
Business Summary:
In the wake of the highly-connected Internet of Things (IoT) and the rise of the cloud, we’re facing increased vulnerabilities to our networks—networks that are less monolithic, legacy architectures and more distributed, microservice-based networks. With large-scale data breaches making headlines, whether you’re a small startup or an enterprise organization, security should be a top priority.
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Omnistruct

Sacramento, CA, US
Services
Cybersecurity
Business Summary:
Cyber security and privacy programs built and maintained to help US businesses keep privacy data sacred.
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OnDefend Services, LLC

Jacksonville, FL, US
Services
Cybersecurity
Business Summary:
We empower the information security industry through our technological innovations and private-labeled security force.
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OneCall Telecom

Memphis, TN, US
Services
Cybersecurity
Business Summary:
OneCall was originally founded in 1972 as P&H Electronics. From its inception, the company was committed to delivering quality products and outstanding customer service.
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Onward Technology

Draper, UT, US
Services
Managed Service ProvidersCybersecurity
Business Summary:
While Onward Technology in Utah serves a variety of industries, our IT and tech support services are vital in many educational settings.
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OpTech

Troy, MI, US
Services
Business Process Outsourcing (BPO)Cybersecurity
Business Summary:
OpTech is an award-winning consulting firm specializing in connecting Fortune 1000 and government clients by providing tailored solutions within the verticals of government, healthcare insurance, utilities, finance (banking) and manufacturing.
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Open Road Technologies

Bartlett, TN, US
Services
Cybersecurity
Business Summary:
Open Road Technologies has been serving the greater Memphis area for over 25 years. We are a family-owned and operated business. Because our name and reputation are on the line, we take the time to get to know our customers and their businesses on a personal level. It's what separates us from our competitors.
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Ops Tech Alliance, LLC.

Clearwater, FL, US
Services
Cybersecurity
Business Summary:
OTA provides the highest caliber of professionals in the areas Intelligence, Communication Security, and Cyber Operations to protect our Country against threats to National Security.
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PAconnect

Greensburg, PA, US
Services
Cybersecurity
Business Summary:
Delivering an exceptional customer experience. We are passionate about technology. Industry Product Certifications are common and necessary. However, Credentialed IT Professionals are the game changers.
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PRO OnCall

Independence, OH, US
Services
Cybersecurity
Business Summary:
Not only does PRO OnCall provide some of the best IT services out there, but our exceptional client relationships make working with us special.
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PROTECT CONNECT

Royal Oak, MI, US
Services
Cybersecurity
Business Summary:
Protect Connect: our name is our mission. We help our clients protect their businesses from pain created by struggles with technology and connect them with the best tools that prevent them from losing time, money and reputation.
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PacketViper, LLC

Aspinwall, PA, US
Services
Cybersecurity
Business Summary:
PacketViper provides transformative cybersecurity solutions for organizations seeking to modernize cybersecurity across converging OT and IT networks and defend distributed OT endpoints.
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Pantek Incorporated

Independence, OH, US
Services
Cybersecurity
Business Summary:
Pantek has provided Linux Support & IT services to companies for over 20 years. Contact our Linux Support and Open-Source Software experts to see how we can help!
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Paperless Knowledge Inc

Roseville, CA, US
Services
Cybersecurity
Business Summary:
Since 1990 Paperless Knowledge , Inc. (PKI) has been a leader in providing IT services and solutions for businesses and governments around the world. From conception to completion we work to meet your strategic deadlines and expectations. We are proud of our success, and our long term business relationships. Ranked as one of the Top 500 Veteran Owned businesses in America for 7 years.
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Paragon Systems Inc

Sacramento, CA, US
Services
Cybersecurity
Business Summary:
Safeguarding American Assets at Home, Abroad, & BEYOND
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Parks Zeigler, PLLC

Virginia Beach, VA, US
Services
CybersecurityBusiness & Corporate LawLicensingView all
Business Summary:
Virginia Beach lawyers experienced in family law, divorce, personal injury, wills and estates, civil litigation, small business, cybersecurity, bankruptcy, and credit disputes.
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Peace Communications

Nashville, TN, US
Services
Managed Service ProvidersCybersecurity
Business Summary:
Big Bandwidth, Virtual Hosted Business, including Microsoft Office, Exchange, SharePoint, CRM, Servers and custom apps. Enterprise Hosted PBX for reliable voice solutions and business cost reduction. Data Center Solutions from hosting servers to provid...
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Peptineo

Albuquerque, NM, US
Services
Cybersecurity
Business Summary:
Delivering Value Recovery in Defense, Engineering, and Health.
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Phoenix IT

Jeffersontown, KY, US
Services
Managed Service ProvidersCybersecurity
Business Summary:
Louisville's Managed IT Services Support Team A Full Service Information Technology Company Louisville's Managed IT Services Support Team A Full Service Information Technology Company
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Plains Internet

Amarillo, TX, US
Services
Managed Service ProvidersCybersecurity
Business Summary:
Your local, high-speed internet provider that offers incredible, honest internet service. Get great service from people just like you who actually care.
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PointClear Networks

Fairhope, AL, US
Services
Cybersecurity
Business Summary:
When it comes to network security, it is easy for small to medium sized businesses to say “not me”, “they are only after the big guys.” The reality is that attacks on all networks have been increasing year after year as hackers have become more sophisticated, and small businesses are being affected every day by relaxed or non-existent security policies.
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Pondurance

Indianapolis, IN, US
Services
Cybersecurity
Business Summary:
Pondurance is an IT Security and Compliance company in markets globally providing service in Security, Continuity, Compliance and Threat Management.
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Port53 Technologies, Inc.

San Francisco, CA, US
Services
Cybersecurity
Business Summary:
Bringing enterprise-grade, cloud-delivered technologies that are easy to deploy, simple to manage, and extremely efficient to small and medium-sized businesses
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Portnox

Austin, TX, US
Services
Cybersecurity
Business Summary:
The first line of defense against cyber threats targeting distributed workforces & expanding networks.
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Power Costs, Inc.

Norman, OK, US
Services
Cybersecurity
Business Summary:
PCI is the premier provider of software, superior customer support, and value-added services for energy companies worldwide.The all-in-one platform for energy optimization and management.
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