AI-powered threat detection is genuinely good at surfacing unusual patterns faster than any human team could. When you're dealing with millions of events across hundreds of endpoints, behavioral anomaly detection can identify statistical outliers, like processes behaving out of character, unusual authentication sequences, and lateral movement patterns, in near real-time.
It's also useful for triage and prioritization. Instead of inundating an analyst with a firehose of alerts to sort through manually, AI can rank signals by level of risk and filter out the noise. Living off the land (LOTL) attacks are a good example of where AI provides real lift. These attacks use legitimate system tools, like PowerShell, WMI, and remote desktop protocol (RDP), so there's no malware signature to catch. AI behavioral models can learn what "normal" PowerShell usage looks like in your environment and flag when it suddenly starts doing something it shouldn't. Without that baseline-and-deviation approach, LOTL attacks are extremely hard to catch.
Speed without context creates noise. An AI model can tell you that something unusual happened, but it can't consistently determine if that something is an actual attack, a benign misconfigured script, or a new IT business process, for instance.
More importantly, connecting activity across a broader attack story requires the kind of pattern recognition that comes from experience. A threat hunter who's worked hundreds of incidents knows what a ransomware precursor looks like in the wild—not just statistically, but behaviorally. They understand the attacker's motivation. They can see what AI flags and ask the right follow-up question: If this is the beginning of something, what's the rest of the playbook?
AI also can't reliably find the "unknown unknowns," which are the novel techniques that don't match any existing behavioral model because nobody's seen them before. That's where human intuition and creativity still have a genuine edge.