Ransomware is no longer simply a problem for an organization’s IT department. A successful attack can interrupt operations, expose sensitive information, delay customer services, create regulatory consequences, and damage relationships with partners.
More importantly, attackers do not always need to compromise a company directly. A vulnerable software provider, managed service provider, supplier, or other trusted third party can create a pathway into the broader business environment. Verizon’s 2025 Data Breach Investigations Report found that third-party involvement in breaches had doubled to 30%, highlighting why organizations need to look beyond their own networks when managing cyber risk.
Strengthen Internal Defenses Against Common Ransomware Entry Points
Reducing ransomware exposure starts with understanding how attackers gain access. Phishing, stolen credentials, exploited vulnerabilities, exposed remote-access services, and compromised endpoints remain important areas of concern. Organizations should therefore combine technical controls with disciplined security practices rather than relying on a single defensive layer.
Identity security is particularly important. Phishing-resistant multifactor authentication should be applied to email, virtual private networks, administrative accounts, and other systems that provide access to sensitive resources. CISA also recommends least-privilege access and zero-trust controls so that compromised accounts cannot automatically reach every system in an environment.
Patch management is equally important. Internet-facing applications, VPN appliances, remote-access infrastructure, operating systems, and other high-value technologies should be identified and updated according to risk. Organizations should also maintain accurate asset inventories so security teams know which systems require protection and which services are unnecessarily exposed.
Backups provide another critical layer of resilience. Important data should be backed up regularly, with copies protected from unauthorized modification or deletion. CISA recommends maintaining offline backups and testing restoration procedures rather than assuming that backups will work during an emergency.
Reduce Exposure Through Identity, Segmentation, and Monitoring
Technical controls become more effective when they limit how far an attacker can move after initial compromise. Network segmentation can separate critical workloads from ordinary user systems, while privileged-access controls can restrict administrative capabilities to the people and situations that genuinely require them.
Lowering ransomware risk also means paying attention to dormant accounts, excessive privileges, and unmanaged devices. A compromised employee account should not automatically provide access to databases, backup infrastructure, administrative consoles, and other critical resources. Organizations can reduce this risk by regularly reviewing permissions, removing unnecessary accounts, using just-in-time administrative access where practical, and monitoring unusual authentication activity.
Endpoint detection and response can help identify suspicious behavior after an attacker gains access. Indicators such as unusual PowerShell activity, credential dumping, unexpected remote connections, mass file changes, or attempts to disable security controls can provide valuable warning signals. However, monitoring should be connected to a defined incident-response process. Detection without a clear escalation and containment procedure may not provide enough protection when an attack is developing quickly.
Employee awareness remains relevant as well. Security training should focus on realistic behaviors, including identifying suspicious messages, reporting unusual requests, protecting credentials, and verifying unexpected payment or access instructions. The objective is not to make employees responsible for stopping ransomware alone, but to create another layer of defense around technical controls.
Extend Ransomware Risk Management to Third Parties
An organization can have strong internal controls and still inherit substantial risk from its vendors. Cloud providers, software companies, managed service providers, contractors, logistics partners, and other suppliers may have privileged connections to business systems or handle sensitive information. If one of these organizations is compromised, attackers may use trusted relationships to reach downstream customers.
Black Kite’s Ransomware Knowledge Center notes that ransomware accounted for 27% of third-party breaches in its 2023 Third Party Breach Report, illustrating why vendor exposure deserves specific attention rather than being treated as a general compliance issue.
Lowering ransomware risk therefore requires organizations to assess vendors before granting significant access and continue monitoring them after onboarding. A questionnaire completed during procurement can establish a baseline, but it cannot capture every change in a vendor’s security posture. Risk assessments should consider vulnerabilities, exposed services, credential security, endpoint protection, email security, access controls, incident-response capabilities, and the sensitivity of the data or systems involved. Continuous vendor monitoring is therefore an important part of reducing your ransomware exposure across the broader supply chain.
Organizations should also distinguish between vendors according to business impact. A supplier that only provides office materials does not present the same cyber risk as a managed service provider with administrative access to production infrastructure. Higher-risk relationships deserve stronger security requirements, more frequent reviews, and clearer incident-notification expectations.
Control the Risk Created by Trusted Connections
Third-party security is not only about whether a vendor has good cybersecurity practices. It is also about what that vendor can reach. Excessive permissions can turn a compromised supplier account into a pathway for lateral movement.
Third-party connections should therefore be narrowly scoped and reviewed periodically. Where possible, organizations should use separate accounts, multifactor authentication, time-limited privileges, network restrictions, logging, and explicit approval processes for sensitive activities. Vendor access that is no longer required should be removed promptly.
Contracts can reinforce these technical measures. Security requirements should address vulnerability management, authentication, encryption where appropriate, breach notification, incident cooperation, access control, and data handling. Organizations should also understand whether critical vendors depend on fourth parties. A direct supplier may have strong controls while relying on another provider whose compromise could still affect the organization.
This is why vendor risk management should extend beyond annual questionnaires. Black Kite describes third-party risk as an ecosystem issue in which connected vendors can introduce operational, cybersecurity, regulatory, and reputational risks. Continuous awareness can help organizations identify changes that deserve investigation between formal assessments.
Build Resilience Before an Incident Occurs
Ransomware preparedness ultimately depends on whether an organization can continue operating and recover after a compromise. Prevention remains essential, but no security program can guarantee that an attack will never occur. Resilience planning should therefore address both technical recovery and business continuity.
Organizations should identify critical applications, data, and dependencies before an incident. Recovery priorities should reflect business impact rather than simply restoring systems in the order they were encrypted. Backup environments should be isolated appropriately, protected against unauthorized deletion, and tested through realistic restoration exercises.
Incident-response plans should also define responsibilities across security, IT, legal, communications, executive leadership, and relevant third parties. Tabletop exercises can expose gaps in decision-making before a real incident creates pressure. For example, teams should know who can isolate a vendor connection, who communicates with customers, who evaluates legal obligations, and who decides when systems can safely return to production.
Third-party coordination is especially important. Contracts and response plans should establish how vendors will communicate during an incident, preserve evidence, contain affected connections, and support recovery. A company may be unable to respond efficiently if it discovers during an attack that its critical provider has no agreed notification or escalation process.
End Note
Reducing ransomware risk requires a broader view of organizational exposure. Internal controls such as MFA, least privilege, patching, segmentation, monitoring, and protected backups form the foundation, but they are only part of the security picture. Vendors, software providers, managed service partners, and other connected organizations can introduce additional pathways that attackers may exploit.
The most effective approach combines prevention, continuous risk awareness, controlled access, third-party oversight, and tested recovery capabilities. Organizations that understand how their own systems and external relationships connect are better positioned to limit an attacker’s reach and maintain essential operations when something goes wrong. For additional ransomware guidance and third-party risk considerations, organizations can consult Black Kite’s Ransomware Knowledge Center alongside established guidance such as CISA’s
