Endpoint Detection and Response (EDR)
What is Endpoint Detection and Response (EDR)?
Endpoint Detection and Response, or EDR, is a security capability that monitors endpoint activity, detects suspicious behavior, and helps security teams investigate and respond to threats on devices such as laptops, desktops, and servers.
Examples
- An EDR tool detects unusual PowerShell activity on an employee laptop and alerts the security team before the attacker can move further.
- A security analyst uses EDR data from a compromised server to see which processes ran, which files changed, and what network connections were made.
Discover 🔎
Many attacks eventually reach an endpoint. A phishing email is opened on a laptop, a malicious script runs on a workstation, a stolen account is used on a server, or an attacker abuses built-in tools on an admin system. Because of that, endpoints are often where threats become visible in a practical, detailed way.
Traditional antivirus can stop many common threats, but modern attacks do not always arrive as obvious malware files. They may use legitimate tools, memory-based activity, script interpreters, stolen credentials, or carefully timed commands. EDR became important because defenders needed more visibility into what was actually happening on endpoints, not just a simple good-or-bad file verdict.
Summary 📝
Endpoint Detection and Response is a security capability that helps organizations detect suspicious endpoint behavior, investigate attacks in more detail, and respond more quickly when compromise occurs. Its strength comes from visibility into processes, commands, file changes, and other endpoint events that reveal how an attack is unfolding. EDR is especially valuable because many modern threats avoid obvious malware and instead abuse normal tools in abnormal ways.
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