Endpoint Detection and Response (EDR): Why Antivirus Isn’t Enough for Arizona Businesses

Antivirus catches what it recognizes. EDR catches what it doesn’t.

Traditional antivirus compares files against a database of known malware signatures. If the file matches a known threat, it blocks it. If it doesn’t match, it passes through. That worked when malware was simple and attackers were unsophisticated.

Modern attacks don’t use files that match known signatures. They use fileless malware that lives in memory. They use legitimate system tools (PowerShell, WMI) turned against you. They use zero-day exploits that no signature database has seen before. Antivirus misses all of these.

Endpoint Detection and Response (EDR) takes a fundamentally different approach. Instead of matching signatures, it monitors behavior. An application that suddenly starts encrypting every file on the network? EDR catches that. A PowerShell script that downloads and executes code from an external server? EDR catches that. A valid user account accessing sensitive files at 3 AM from an unusual location? EDR catches that.

What EDR deployment looks like

For a typical Arizona business with 20-100 endpoints:

  • A lightweight agent installed on every workstation and server
  • Real-time behavioral monitoring with automated threat containment
  • 24/7 monitoring by a security operations center (SOC)
  • Forensic investigation capability when incidents occur
  • Monthly reporting on threats detected and blocked

Managed EDR pricing

Managed EDR typically costs $5-15 per endpoint per month, which includes the software, monitoring, and response. For a 50-endpoint company, that’s $250-750/month for enterprise-grade threat detection. Compare that to the average cost of a ransomware incident for a small business: $150,000+ in downtime, recovery, and lost business.

Compliance connection

EDR helps satisfy requirements across all three of your potential compliance frameworks:

  • FTC Safeguards Rule: Continuous monitoring and threat detection
  • HIPAA: Malicious software protection and audit logging
  • CMMC/NIST 800-171: System monitoring (3.14.6, 3.14.7) and incident response

Asteroid IT deploys managed EDR as part of our cybersecurity services for Arizona businesses. Schedule a conversation or call 480-937-7021.

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