The Environment
A national law firm operates from a central headquarters and several regional offices, all connected by a private WAN. Their environment is a textbook professional services setup: standard Windows workstations, a mix of on-premises document management servers and cloud productivity services, a modern managed network stack, and an existing EDR solution deployed across all endpoints. Their IT team consists of two generalists — neither a dedicated security analyst. Compliance obligations are significant; the firm is subject to legal sector data protection regulations, solicitor-client privilege requirements, and confidentiality obligations that make any breach of client data potentially catastrophic — legally, financially, and reputationally.
Frostbow Deployment
Frostbow was deployed in the Frostbow AI Layer configuration, sitting above the existing EDR and ingesting its alert stream through a lightweight ingestion adapter. No new agents were installed on endpoints; Frostbow consumed telemetry already being generated by existing tooling. The Frostbow Dashboard was provisioned for both the IT Manager and the Managing Partner, giving each a role-appropriate view of security posture. Deployment was completed in under two weeks.
The Scenario: Business Email Compromise Precursor
A junior associate received a well-crafted spear-phishing email impersonating a court filing service the firm regularly uses. She clicked a link that silently installed a remote access trojan via a malicious macro in what appeared to be a routine case document. The EDR flagged the initial macro execution, but the subsequent attacker behavior was designed to blend in with normal associate activity: email was opened, a browser session to a legitimate-looking document portal was initiated, and files in a client matter shared drive began being accessed in a pattern only slightly outside the associate’s established norm.
How Frostbow Responded
Within fifteen seconds of the macro alert being ingested, Frostbow cross-referenced the host’s behavioral baseline — built over six weeks of operational observation — and identified a divergence. The associate’s endpoint had never previously initiated outbound connections to that IP range, and the access pattern across the client matter shared drive (sequential file opens across multiple matter folders within 90 seconds) matched a concept Frostbow had autonomously formed called BulkFileEnumeration, developed from earlier reconnaissance-style activity observed during onboarding.
Frostbow correlated three signals into a single incident narrative: the macro execution alert, the anomalous outbound connection, and the file enumeration pattern. It assessed the combined confidence as high-severity and autonomously blocked the outbound connection while simultaneously flagging the endpoint for review. A plain-language incident brief — including a causal explanation of the attack chain — was pushed to the IT Manager’s dashboard and to the Managing Partner via email within 40 seconds of the initial alert.
The attacker’s session was severed before any data left the environment. Total analyst time to containment: zero. Total elapsed time from infection to containment: 53 seconds.
Key Deployment Characteristics
- No new endpoint agents required; integrated with existing EDR via ingestion adapter
- Full deployment in under two weeks
- Dashboard access provisioned for both technical and executive stakeholders
- Behavioral baseline established through passive observation — no manual rule configuration