Miami Cybersecurity Incident Report 2025: What Actually Happened to Local Businesses

This report analyzes 47 cybersecurity incidents that Simple Network Solutions responded to or was consulted on involving Miami-Dade businesses between January and December 2025. All identifying information has been removed. Industry categories, company sizes, attack types, and financial impact figures are reported as provided by the affected organizations or their legal counsel. This is not a comprehensive survey of all Miami cybersecurity incidents — it reflects the cases our team directly engaged with.

Incident Overview: 47 Cases, January–December 2025

Business Email Compromise: The Most Common and Most Underreported Threat

BEC was the most common incident type in our 2025 data, accounting for nearly 30% of all cases. The pattern was consistent across all 14 incidents: an attacker gained access to a business email account (typically through a phished password), monitored the inbox for weeks or months, and then intervened in a financial transaction — redirecting a wire transfer, intercepting a vendor payment, or impersonating an executive to authorize a fraudulent payment.

Industry Breakdown of BEC Incidents

• Real estate (4 incidents): Wire fraud during property transactions. Average loss: $67,000. One incident involved a $340,000 wire transfer that was partially recovered through FBI intervention.
• Legal services (3 incidents): Client trust account fraud and vendor payment redirection. Average loss: $28,000.
• Construction/contracting (3 incidents): Subcontractor payment redirection. Average loss: $41,000.
• Healthcare (2 incidents): Vendor payment fraud. Average loss: $19,000.
• Retail/hospitality (2 incidents): Payroll fraud and vendor payment redirection. Average loss: $22,000.

What Made BEC Victims Vulnerable

• 12 of 14 BEC victims had no MFA on their email accounts at the time of the incident
• 9 of 14 had no email security beyond basic spam filtering
• 11 of 14 had no process for verifying wire transfer requests by phone before executing
• All 14 had received at least one phishing email in the 30 days before the incident that was not reported to IT

Ransomware: Fewer Incidents, Dramatically Higher Costs

Ransomware accounted for 11 incidents in 2025 — fewer than BEC, but with dramatically higher average recovery costs. The $127,500 average recovery cost in our data does not include ransom payments (3 of 11 victims paid ransom; those amounts are excluded from the recovery cost figure at the request of the affected organizations).

Ransomware Entry Points (2025 Miami Data)

Recovery Time by Backup Status

The data in Table 3 is the most important finding in this report. The difference between a tested cloud backup and no backup is not a matter of degree — it is the difference between an 18-hour disruption and a 22-day catastrophe. The cost difference ($14,200 vs. $218,000) represents a 15x multiplier. The cost of maintaining a tested cloud backup for a 20-person company is approximately $200–$400/month.

The 6 Controls That Separated Fast Recoveries from Catastrophic Ones

Across all 47 incidents, we identified six security controls whose presence or absence most strongly correlated with recovery speed and cost:

1. 1Multi-factor authentication on email and cloud accounts: Present in 0 of 14 BEC victims. Present in 8 of 11 ransomware victims who recovered in under 5 days.
2. 2Tested cloud backup (restoration test within 90 days): The single strongest predictor of ransomware recovery speed. See Table 3.
3. 3Endpoint Detection and Response (EDR) vs. basic antivirus: 7 of 11 ransomware incidents involved devices running basic antivirus only. EDR detected and contained 3 ransomware incidents before full encryption.
4. 4Network segmentation: In 4 of 11 ransomware incidents, the malware spread from one infected device to all network-connected systems because there was no segmentation. In the 7 incidents with some segmentation, spread was contained to 1–3 systems.
5. 5Incident response plan (written, tested): Organizations with a written IR plan that had been reviewed in the past 12 months recovered 3.2x faster on average than those without one.
6. 6Cyber liability insurance: 31 of 47 affected organizations had cyber liability insurance. Average out-of-pocket cost for insured organizations: $18,400. Average out-of-pocket cost for uninsured: $89,200.

What Miami Businesses Are Still Getting Wrong in 2026

Based on the 47 incidents and the pre-incident security assessments we conducted for affected organizations, these are the most common gaps we continue to see in Miami businesses:

• MFA is still not universal: 68% of the organizations in our incident data did not have MFA on all email accounts. This is the most preventable gap in Miami business security.
• Backups are not tested: 6 of 11 ransomware victims had backups — but 3 of those 6 discovered their backups were incomplete or corrupted only when they tried to restore. An untested backup is not a backup.
• RDP is still exposed: 3 ransomware incidents in 2025 entered through RDP exposed directly to the internet. This is a known, documented attack vector with a simple fix (VPN or Zero Trust access). There is no legitimate reason for RDP to be exposed to the public internet in 2026.
• Vendor access is not monitored: 2 of the 6 supply chain incidents involved vendor credentials that had not been reviewed or rotated in over 18 months. One vendor whose credentials were used had not worked with the affected company for 11 months.
• Cyber insurance is underutilized: 16 of 47 affected organizations had no cyber liability insurance. Of those 16, 9 reported that the incident cost was "significant" or "severe" to their business operations.

Recommendations: The Minimum Viable Security Stack for Miami SMBs in 2026

Based on the 2025 incident data, here is the minimum security configuration that would have prevented or significantly limited the impact of the majority of incidents in our dataset:

• MFA on all email and cloud accounts (prevents BEC, limits phishing impact) — cost: $0–$3/user/month
• Tested cloud backup (restored within 90 days) — cost: $5–$15/user/month
• EDR on all endpoints (detects ransomware before full encryption) — cost: $8–$18/device/month
• No direct RDP exposure to internet (eliminates a major ransomware entry point) — cost: $0 (configuration change)
• Cyber liability insurance (limits financial exposure) — cost: $1,500–$8,000/year depending on revenue and coverage
• Annual phishing simulation and training (reduces BEC and phishing susceptibility) — cost: $3–$8/user/month