CrowdStrike Falcon: Your First 30 Days
Getting the most out of CrowdStrike Falcon requires thoughtful configuration. This guide covers the essential steps from sensor deployment to your first real detections.
Day 1–3: Deploy Sensors
The Falcon sensor is a lightweight agent that installs on Windows, macOS, and Linux endpoints. It communicates with the CrowdStrike cloud and requires no on-premises infrastructure.
- Log into the Falcon console and navigate to Hosts → Sensor Downloads
- Download the appropriate installer for your OS
- Deploy via Intune, SCCM, or Group Policy using your existing tooling
- Verify sensors appear in Hosts → Host Management within 15 minutes of installation
- Check the sensor version matches the latest available — enable auto-updates
- Deploy in Detection Only (Reduced Functionality Mode) first so you can baseline your environment before enabling prevention.
- Use the Falcon Sensor Update Policy to control which sensor version is deployed across groups.
Day 4–7: Configure Prevention Policies
Prevention policies control how aggressively Falcon blocks threats. Start cautiously and increase prevention levels as you become familiar with your environment's baseline.
- Go to Endpoint Security → Prevention Policies
- Start with the 'Detect' slider settings — never enable aggressive blocking immediately
- Review any existing detections from the first few days before increasing prevention
- Enable Next-Gen Antivirus (NGAV) for signature-based protection as a baseline
- Enable 'Adware & PUP' blocking only after confirming no legitimate tools are flagged
Day 8–14: Understand Your Detections
Falcon will likely generate detections from day one. Learning to triage these efficiently is a core skill for getting value from the platform.
- Navigate to Endpoint Security → Detections
- Filter by severity: start with 'Critical' and 'High'
- Click any detection to see the full process tree (Storyline)
- Assess: is this malicious, or a legitimate admin tool triggering behavioural detection?
- Create exclusions for known-good processes that generate false positives
- Use the Process Explorer to understand parent-child relationships — this shows you the attack chain at a glance.
- Tag detections as True Positive, False Positive, or In Progress to build your triage workflow.
Day 15–30: Enable Advanced Features
Once you're comfortable with the basics, unlock the platform's advanced capabilities: threat intelligence, vulnerability scanning, and automated response.
- Enable Falcon Spotlight (Vulnerability Management) to see CVEs mapped to your endpoints
- Configure Fusion SOAR workflows for automated containment on critical detections
- Set up notification rules to alert your team via email/Slack on High/Critical detections
- Integrate with your SIEM (Sentinel, Splunk) via the Falcon Data Replicator
- Schedule a 30-day review: are prevention policies causing any business disruption?