Best EDR Software (2026)

EDR (endpoint detection and response) software runs a lightweight agent on every laptop, desktop and server, recording process, file and network activity continuously. It compares that activity against known attack patterns and behavioural baselines, alerting security staff to anything suspicious with enough detail to investigate. Most platforms let you isolate a compromised device from the network in one action, stopping an attacker's lateral movement before it spreads further.

• Real-time behavioural monitoring – catches in-progress attacks, not just known malware
• One-click device isolation – contain a threat immediately without unplugging hardware manually
• Historical threat hunting – search past activity logs when investigating how an attack started
• Automated remediation – reverses file changes from ransomware where technically possible
• Cross-device visibility – a single dashboard covering every managed endpoint
• Alert prioritisation – surfaces the highest-confidence threats first
• API/SIEM integration – feeds data into broader security monitoring if you have one
• Vendor threat intelligence updates – kept current against new attack techniques

Beyond detection, weigh how the vendor supports response. Some offer purely self-managed consoles, while others bundle a managed detection service that reviews alerts on your behalf — a meaningful difference if your team is small. Ask how the agent performs on lower-spec machines common in field or branch offices, since a heavy agent that slows work invites employees to try disabling it, defeating the purpose entirely.

Compare time-to-detect and time-to-contain figures from real customers rather than lab benchmarks. Check whether the alert volume is manageable for your team size, or whether you'll need the managed service add-on. Ask about the isolation workflow specifically — how fast, how disruptive, and whether it can be reversed easily once the device is cleared. Finally, confirm pricing scales predictably as you add endpoints, since per-device costs can climb quickly.