Proactive monitoring empowers IT personnel to identify threats before they worsen, necessitating an ongoing examination of logs, alerts, and SIEM dashboards, along with the investigation of irregularities like multiple failed login attempts, atypical data transfers, or dubious processes. Automated alerts should highlight any unusual activity, and detection systems need to undergo regular testing through simulations to confirm their proper operation. Disregarding such alerts can lead to catastrophic consequences, as illustrated by a security breach where weeks went by unnoticed because IT staff overlooked repeated login failures, ultimately leading to the theft of customer data that could have been avoided with diligent monitoring.
Why this matters
If it’s not logged, it didn’t happen. If it is logged, learn to spot the weird.
Do this
- Onboard essential logs: auth, EDR, email/SEG, VPN, cloud, key apps.
- Build a few use-cases: impossible travel; after-hours admin logins; mass mailbox rules; large data egress.
- Triage flow: validate then enrich (user/device) then decide (close or escalate).
Mini-lab
Create a saved search for impossible travel or failed logins + success. Set a sensible alert threshold
