Six Security Priorities for California Businesses in 2027
Six priorities, each justified by the evidence
Security advice is only useful when it is tied to how organizations are actually being breached and defrauded. The California Cybersecurity Risk Report 2027 points at a short, unglamorous list — and none of it depends on any particular product. Here it is, each priority with the number that justifies it.
1. Phishing-resistant MFA and identity hygiene
Credential abuse appears in 39 percent of breach chains in the 2026 Data Breach Investigations Report, and the FBI's first-line ransomware recommendations center on multi-factor authentication, eliminating default credentials, and least privilege. MFA on email, VPN, and financial systems addresses the mechanisms behind both account takeover and business email compromise at once. Prioritize phishing-resistant methods over SMS codes where you can.
2. Payment-verification controls
Given BEC's $3.05 billion national toll and its 86 percent reliance on wire and ACH, out-of-band verification of any new or changed payment instruction is the single highest-leverage fraud control available to a business, at near-zero cost. When fraud occurs anyway, speed matters: the FBI's Financial Fraud Kill Chain froze $679 million of $1.16 billion in attempted thefts in 2025 — a 58 percent success rate that depends on reporting to the bank immediately.
3. Prioritized patching of internet-facing systems
Vulnerability exploitation overtook stolen credentials as the leading initial-access vector in the 2026 DBIR, at 31 percent of breaches, driven by attacks on edge devices, VPNs, and remote access. Meanwhile remediation is moving the wrong way: only 26 percent of vulnerabilities on CISA's Known Exploited Vulnerabilities catalog were fully remediated in the DBIR dataset, down from 38 percent. Patching internet-facing and edge systems against known-exploited vulnerabilities — on a days-not-months cadence — is the clearest gap the 2026 data exposes.
4. Vendor risk management with teeth
California's own breach register shows single vendor incidents cascading into notices from dozens of organizations, and the DBIR found third-party involvement in 48 percent of breaches, up 60 percent year over year. Maintain a current inventory of vendors holding your data, contract for breach-notification terms shorter than the statutory maximum, and verify vendors' MFA and access controls rather than accepting questionnaire self-attestation — only 23 percent of third parties had fully remediated missing MFA on cloud accounts.
5. Immutable, tested backups and network segmentation
Sixty-nine percent of ransomware victims declined to pay in the 2026 DBIR — a position only available to organizations that can restore. The FBI's specific recommendations are encrypted, immutable, offline backups covering the full data estate; network segmentation to contain spread; and detection of lateral movement, the job a managed SOC or MDR capability performs. A backup you have never restored from is not a control — test it. See ransomware controls that work for the operational detail.
6. Incident-response readiness scaled to SB 446
SB 446's 30-day consumer deadline means a California business that discovers a breach must be able to investigate, scope, and notify within a month. That requires readiness before the incident: logging sufficient to scope a breach in days, a written and rehearsed response plan, and counsel and notification vendors identified in advance. For any organization holding data on more than 500 Californians, this is now effectively a regulatory requirement.
The through-line
None of these is exotic, and that is the point. The 2025 data does not reward organizations that bought the most tools; it rewards the ones that closed the basics — identity, payment verification, patching, vendor oversight, recoverable backups, and a rehearsed plan. Firms without internal security staff can reach the same posture by having these run for them; the controls are what matter, not who operates them.
The figures in this article are drawn from the California Cybersecurity Risk Report 2027 by intSignal Research, where each is traced to its source, method, and limitations.
