The decisions made in the first few hours after a security incident determine most of what follows, how far the damage spreads, whether data is recoverable, what your legal exposure looks like, and whether your insurer pays out. This playbook covers what needs to happen in the first 72 hours: how to contain without destroying evidence, who to call and in what order, what your notification obligations actually are, and the mistakes that turn a manageable incident into a much worse one.
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Most defense contractors need CMMC Level 2 certification before competing for DoD contracts. Phase 1 is live as of November 10, 2025, SPRS scores are required now. Phase 2, when C3PAO third-party assessments become mandatory, begins November 2026. For small contractors starting from scratch, 12 to 18 months is a realistic preparation timeline. This guide covers what CMMC actually requires, what the path costs, and where most organizations go wrong before they ever reach an assessment.
Twenty-nine percent of law firms have suffered a security breach, per the ABA's 2023 Legal Technology Survey, rising to 60% for firms of 500 or more attorneys. Password-related compromises are among the leading causes: credential theft, password reuse, and phishing attacks targeting attorney credentials don't require sophisticated exploitation. Law firms also face an ethical dimension, most state bar rules now treat inadequate security as a competence and confidentiality issue.
DNS filtering intercepts domain lookup requests before a connection is established, blocking phishing sites, malware callbacks, and ransomware staging infrastructure before any code executes or credential is entered. Unlike EDR (which catches threats after a file lands) or email filtering (which blocks attachments before delivery), DNS filtering operates at the network layer and covers every device, including those that aren't patched.
AI is a genuine asset for cybersecurity teams and a genuine weapon for attackers. Over 82% of phishing emails are now created with AI assistance. A finance employee at Arup transferred $25 million after a video call where every participant was an AI-generated deepfake. Deepfake incidents rose 4x in 2024.
Last year, a mid-sized accounting firm wired $340,000 to a fraudulent account after an attacker impersonated the CFO in a series of emails. The firm had endpoint protection, email filtering, and a firewall. What it didn't have was a workforce trained to recognize business email compromise. Verizon's 2024 DBIR found 68% of breaches involved a non-malicious human element.
A financial services firm discovered its breach six weeks after it happened, an employee on a home network had clicked a credential-harvesting link, and the attacker moved laterally through shared drives without triggering any alerts because the login came from a recognized account. Remote work distributes your attack surface across every home office, coffee shop, and hotel network employees connect from.
Cybersecurity investment reduces breach probability and cost, but it also introduces real tradeoffs: licensing fees, management overhead, and friction with productivity. IBM's 2024 Cost of a Data Breach Report puts the average breach at $4.88 million; Verizon's 2024 DBIR found 68% involved a human element.
Forty-six percent of confirmed data breaches involve small and midsize businesses, according to Verizon's DBIR, and the average SMB breach cost is approximately $3.3 million per IBM's 2024 research. Most never fully recover.
Most breaches don't announce themselves, they start with a stolen credential, an unpatched system, or a phishing click, and recovery costs far exceed what prevention would have.