Stop Watching Logs: Build a Threat Detection Pipeline That Answers

Who This Is For

If you're responsible for endpoint security at a mid-sized organization—maybe you're the sole security engineer, or you're on a small team drowning in alerts—this is for you. You've likely got an EDR platform (CrowdStrike Falcon, Microsoft Defender for Endpoint, SentinelOne Singularity, Palo Alto Cortex XDR, or Trend Micro Vision One, to name the common ones) and maybe you've even layered on an antivirus. But the dashboard is a sea of red, and your team is exhausted. The contrarian truth: you don't need more tools or more alerts. You need a detection pipeline that starts with triage, not with raw telemetry. The old advice—"collect everything, alert on everything"—is how you miss the 48-minute breakout (CrowdStrike 2025 Global Threat Report). We're going to build a pipeline that answers the only question that matters: "Is this a real attack, and do I need to act now?"

Step 1: Define What You're Actually Trying to Detect

Before you tune a single rule, write down the top three attack scenarios that keep you up at night. For most of us, it's ransomware, credential theft, and data exfiltration. Now map those to MITRE ATT&CK techniques—that knowledge base of real-world adversary behavior (MITRE ATT&CK). For ransomware, you care about Initial Access (phishing, exploitation), Execution (powershell, wscript), and Impact (encryption). For credential theft, you're watching for LSASS access, credential dumping, and maybe Kerberoasting. For exfiltration, you're looking at unusual outbound transfers. This isn't an academic exercise. When you know the techniques, you can pick the specific telemetry that matters. You'll also find that MITRE ATT&CK is free and open for anyone to use (MITRE ATT&CK), so there's no excuse for guessing.

Step 2: Choose Your Telemetry Sources (and Only What You Need)

Your EDR is already collecting a ton of endpoint activity: process creation, network connections, file writes, registry changes. That's your primary telemetry. But you don't need to ingest every event into your SIEM. Filter at the source. For example, you don't need to see every benign PowerShell script—you need to see PowerShell that's executing encoded commands or downloading from a suspicious URL. Also, don't forget your antivirus. Yes, AV is prevention-focused and signature-based, but it still catches commodity malware that would otherwise be noise (CISA). Run AV alongside EDR, as most orgs are advised to do, and let EDR focus on the sophisticated stuff (CISA). The key is to have a single pane of glass—if your EDR doesn't correlate with your AV logs, you're blind to the full picture.

Step 3: Prioritize with the CISA KEV Catalog

Here's a hard truth: you cannot patch everything. But you can prioritize. CISA's Known Exploited Vulnerabilities (KEV) catalog is the authoritative list of vulnerabilities that are actually being exploited in the wild (CISA). As of August 2026, that's about 1,670 vulnerabilities (CISA). Use the KEV as your patching priority list. When a new KEV entry drops, you have a ticking clock. For example, if a KEV entry appears for a remote code execution flaw in your VPN appliance, you need to patch that within days, not months. And here's the tie-in to detection: if you can't patch immediately, you need to write a detection rule for the exploitation technique. The Verizon 2026 DBIR found that vulnerability exploitation has surpassed stolen passwords as the top initial access vector (Verizon 2026 DBIR). So your detection pipeline must have rules that catch exploitation attempts—things like suspicious child processes from a web server or unusual network connections from a database server.

Step 4: Write Detection Rules That Are Triage-First

Now the fun part. Write rules that are designed for triage, not for alert fatigue. A good rule has three parts: a trigger, a context, and a priority. For example, a rule that triggers on "whoami /priv" followed by "net user" is a classic enumeration sequence. The context: is this happening on a domain controller at 3 AM? Then it's probably an attacker. Priority: high. But if it's a service account running a scheduled task, it's low. So your rule should include context from the environment—like the asset's criticality. Use MITRE ATT&CK to map your rules to tactics, because that makes it easier to see if you're covering the full attack chain (MITRE ATT&CK). Don't forget behavioral rules. EDR can catch fileless malware and zero-days because it uses behavioral analysis, not just signatures (CISA). So have rules that look for unusual process behaviors, like a document spawning PowerShell, even if the PowerShell is benign.

Step 5: Build a Triage Queue (Not an Alert Stack)

Every alert should land in a queue where a human can quickly decide: true positive, false positive, or needs deeper look. The queue should be sorted by a risk score that you define, not by timestamp. The risk score should combine the priority of the rule, the criticality of the asset, and the stage of the attack chain. For example, a phishing email that leads to a PowerShell download from a rare domain on a domain admin's laptop is a 9/10. A low-privilege workstation with a generic AV detection is a 2/10. This is where you save hours. The CrowdStrike 2025 Global Threat Report found that 79% of detections were malware-free (CrowdStrike 2025 Global Threat Report), meaning your EDR is going to flag a lot of non-malware things. Triage is how you sort the signal from the noise.

Step 6: Automate the Response, But Keep a Human in the Loop

Once you have a triage queue, you can start automating the easy stuff. If an alert is a known false positive (like a vulnerability scanner), have the system automatically close it. If an alert is a high-confidence true positive on a non-critical asset, you can have the EDR automatically isolate the endpoint—that's a feature of EDR (CISA). But for anything on a critical asset or anything ambiguous, you need a human. The worst thing you can do is automate a response that takes down a domain controller because of a false positive. And here's a what-can-go-wrong warning: if you automate too aggressively, you'll end up with an attacker who uses that automation to their advantage. For example, they might trigger an isolation on a sacrificial machine to distract you while they move to the real target. So keep the human in the loop for the final call on anything that could cause business disruption.

Step 7: Test, Measure, and Refine (Continuous Improvement)

Your detection pipeline is never done. You need to test it regularly. Use MITRE ATT&CK to run adversary emulation—like a tabletop exercise but with actual commands. See if your rules fire. See if your triage queue is manageable. Measure your mean time to respond (MTTR). The CrowdStrike 2026 Global Threat Report says breakout time has dropped to 29 minutes (CrowdStrike 2026 Global Threat Report), so your detection-to-response must be faster than that. Also, keep an eye on AI-driven attacks—they're on the rise (IBM 2026). And don't forget to review your KEV list weekly. The bottom line: a detection pipeline is a living system, not a one-time project.

What Can Go Wrong

Here's the warning: the biggest failure mode is alert fatigue. If you don't tune your rules to the point where you're seeing maybe 20-30 actionable alerts a day, you'll start ignoring them. And that's when a real attack slips through. The second failure mode is over-reliance on automation. I've seen a team miss a critical alert because they automated the response and nobody was watching the queue. So, build in a daily review of all high-priority alerts, even if they were auto-closed. The third is neglecting the basics. Don't forget that ransomware is still a top threat, and CISA's StopRansomware guidance still applies: back up offline, patch regularly, and report to the FBI if you get hit (CISA). Your detection pipeline is not a substitute for those fundamentals.

Bottom Line

The single best move you can make is to stop treating your EDR as a standalone tool and start building a triage-first detection pipeline that uses MITRE ATT&CK to map your rules, CISA KEV to prioritize patching, and a human-in-the-loop automation to respond. That's how you beat the 29-minute breakout time.

Sources

• CISA - https://www.cisa.gov/stopransomware
• CrowdStrike 2025 Global Threat Report - https://www.crowdstrike.com/en-us/global-threat-report/
• CrowdStrike 2026 Global Threat Report - https://www.crowdstrike.com/en-us/global-threat-report/
• Verizon 2026 Data Breach Investigations Report - https://www.verizon.com/business/resources/reports/dbir/
• MITRE ATT&CK - https://attack.mitre.org/
• CISA Known Exploited Vulnerabilities Catalog - https://www.cisa.gov/known-exploited-vulnerabilities-catalog