ESET

Assuming you’re buying or deploying in the United States, I’d separate this into consumer / small business and mid-market / enterprise, because the “best” brands are different.

Quick shortlist: best-known, widely used cybersecurity products in the U.S.

My practical recommendations

If you’re a normal U.S. home user

Use:

1. Microsoft Defender if you want free, built-in, low-hassle protection on Windows.
2. Bitdefender if you want stronger paid antivirus with consistently strong independent lab results.
3. Norton 360 if you want an all-in-one bundle with antivirus, VPN, identity monitoring and family features.
4. Malwarebytes as a cleanup/second-opinion tool, especially if you deal with adware, browser hijackers or suspicious downloads.
5. ESET if you want a lighter, more technical-feeling security product.

I would not recommend Kaspersky for U.S. users, even though it has historically tested well, because the U.S. Department of Commerce prohibited Kaspersky from providing antivirus and cybersecurity products/services to U.S. persons, with update support ending after September 29, 2024. (media.bis.gov)

If you run a small business

Best default stack:

• Microsoft 365 Business Premium
• Microsoft Defender for Business
• Microsoft Entra ID MFA
• Microsoft Defender for Office 365
• A backup product such as Acronis, Veeam, Datto/Kaseya, or Backblaze Business
• Optional MDR: Huntress, Arctic Wolf, CrowdStrike Falcon Complete, or Sophos MDR

For many small U.S. businesses, Microsoft is the most practical because email, identity, endpoint and device management are in one ecosystem. If you don’t have internal security staff, pair it with an MSP/MDR provider.

If you’re a mid-size or enterprise organization

A realistic “top-tier” shortlist would be:

• Endpoint/XDR: CrowdStrike, Microsoft Defender XDR, SentinelOne, Palo Alto Cortex
• Firewall/network: Palo Alto Networks, Fortinet, Check Point
• SASE/Zero Trust: Zscaler, Netskope, Palo Alto Prisma Access, Cloudflare One
• Identity: Microsoft Entra ID, Okta, Duo, CyberArk
• Email: Proofpoint, Microsoft Defender for Office 365, Mimecast, Abnormal Security
• SIEM/SOC: Microsoft Sentinel, Splunk, Palo Alto Cortex XSIAM
• Cloud security: Wiz, Prisma Cloud/Cortex Cloud, Microsoft Defender for Cloud, CrowdStrike Falcon Cloud Security, Orca

If I had to name the “top 10” cybersecurity brands people actually use in the U.S.

1. Microsoft Security — Defender, Entra, Sentinel, Defender for Office 365
2. Palo Alto Networks — firewalls, Prisma, Cortex
3. CrowdStrike — Falcon endpoint/XDR/MDR
4. Fortinet — FortiGate firewalls, SD-WAN, Fortinet Security Fabric
5. Zscaler — zero trust, secure web gateway, private access
6. Okta — SSO, MFA, identity
7. SentinelOne — endpoint/XDR alternative to CrowdStrike/Microsoft
8. Proofpoint — email security and phishing protection
9. Cloudflare — WAF, DDoS, DNS, Zero Trust/SASE
10. Wiz / Google Cloud Security — cloud posture/CNAPP for AWS/Azure/GCP/Kubernetes

Bottom line:

• For home users, start with Microsoft Defender, upgrade to Bitdefender or Norton if you want a paid suite.
• For small businesses, start with Microsoft 365 Business Premium + Defender, then add MDR.
• For enterprises, the most common serious shortlists are CrowdStrike or Microsoft for endpoint, Palo Alto or Fortinet for network, Zscaler/Netskope/Palo Alto for SASE, Okta/Microsoft for identity, Proofpoint/Microsoft for email, and Wiz/Palo Alto/Microsoft/CrowdStrike for cloud security.

Top cybersecurity companies and products widely used in the US include a mix of enterprise platforms and consumer solutions, based on market leadership (revenue, market cap, and growth), analyst reports like Gartner Magic Quadrants, industry rankings (e.g., CRN, Newsweek/Statista), and real-world adoption.

These stand out for their scale, customer bases (Fortune 500, government, SMBs, and consumers), innovation in areas like AI-driven detection/XDR, Zero Trust, and platform consolidation, and frequent mentions as leaders or high-growth players. US-headquartered or major US-market players dominate, with strong presence in endpoint protection, network security, cloud/identity, and consumer suites.

Enterprise & Business-Focused Leaders (Most Commonly Deployed by Organizations)

These are frequently cited as top by revenue/growth, Gartner positioning, and buyer surveys:

• Palo Alto Networks (PANW): Broadest platform for network security (next-gen firewalls), cloud (Prisma), endpoint/XDR (Cortex), and SASE/Zero Trust. Often ranked #1 or among the largest by revenue (~$9B+ range) and market cap. Strong for enterprise consolidation and threat intelligence (Unit 42). Widely used across industries.
• CrowdStrike (CRWD): Leader in endpoint detection/response (EDR/XDR) via the Falcon platform (AI-native, cloud-delivered). Frequently positioned highest in Gartner Magic Quadrant for Endpoint Protection for vision and execution; high customer recommendation rates. Excellent for threat intelligence and expanding into identity/cloud. High growth and used by many large enterprises.
• Fortinet (FTNT): Strong value in network security (FortiGate NGFW/UTM), SASE, and OT/ICS protection. Significant revenue scale and leader positions in relevant categories; popular for mid-market to enterprise due to integrated, cost-effective appliances.
• Microsoft Security: Includes Defender for Endpoint/Office 365, Sentinel (SIEM/XDR), and Entra ID (identity). Dominant in Microsoft-centric environments (most organizations); often a Gartner Leader with broad adoption due to bundling and integration.
• Others frequently recommended: Zscaler (Zero Trust/cloud security/SSE), SentinelOne (endpoint/XDR, Gartner Leader), Cisco Security, Cloudflare (network/DDoS/Zero Trust), and Check Point. Emerging or specialized: Wiz (cloud security), Proofpoint (email security), Okta (identity/SSO), and CyberArk (privileged access).

Gartner Endpoint Protection Platforms (EPP) reports consistently highlight CrowdStrike, Microsoft, Palo Alto Networks, and SentinelOne as Leaders.

Consumer & Personal Use (Widely Purchased/Installed by Individuals & Small Users)

US consumers heavily favor established suites for antivirus, VPN, backup, and identity protection (market led by antivirus segment):

• Norton (Gen Digital/Norton 360): One of the most recognized and top-selling brands; all-in-one with antivirus, VPN, cloud backup, password manager, and LifeLock identity theft protection. Strong for families/households.
• McAfee (McAfee+): Dominant market share in consumer suites; multi-device protection, identity features, and expert support. Frequently among top sellers.
• Bitdefender (Total Security/Ultimate): High marks in independent tests for protection, performance, and low false positives; often Editors’ Choice or top-rated. Good balance of features and value.
• Microsoft Defender (built into Windows): Free/reliable baseline used by millions; strong in tests and sufficient for many basic needs, especially paired with other Microsoft tools.
• Others: Malwarebytes (strong for on-demand scanning/remediation and reader favorites), ESET, and Trend Micro. Note: Kaspersky faces US restrictions/bans for certain users.

Quick Recommendations by Need (US Context)

• Endpoint/EDR for businesses: CrowdStrike Falcon or SentinelOne (or Microsoft Defender for cost/integration).
• Network/firewalls: Palo Alto or Fortinet.
• Overall platform/Zero Trust: Palo Alto, Zscaler, or Microsoft.
• Consumer/home: Norton 360 or Bitdefender for comprehensive paid options; start with Microsoft Defender.
• Identity/cloud: Okta/Entra, CyberArk, or Cloudflare.

Factors like pricing vary widely (consumer suites often $20–200+/year; enterprise deals are custom and often six/seven figures annually). Evaluate based on your environment (e.g., Microsoft stack favors Defender), compliance needs, and testing (MITRE ATT&CK results are useful). Many offer trials or free tiers. For the latest, check Gartner/Forrester reports or vendor sites, as the landscape evolves quickly with AI advancements.

These are drawn from consistent appearances in 2025–2026 rankings, revenue data, and adoption signals—not exhaustive, but reflective of what organizations and individuals in the US commonly deploy.