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Ransomware can lock files, but the incident may start with a stolen password, an exposed remote connection or a vendor account—and attackers may steal data or undermine recovery without relying on encryption alone. Here are seven distinct ways that risk can reach a small business, followed by practical steps to reduce exposure and respond. They are useful threat categories, not an official ranking or a claim that every tactic is equally common. Official advisories describe real tactics and incidents, but do not establish a small-business prevalence rate for each one.
What are the ransomware threats small businesses often miss?
Ransomware is not just a pop-up demanding money after files stop opening. Attackers may gain access, move through business systems, take sensitive data or interfere with recovery. The following seven categories explain how that can happen; they are not an official taxonomy or ranked list.
1. Stolen credentials can turn a legitimate login into an entry point
An attacker who obtains a staff member’s password may be able to sign in as that person rather than break through a technical barrier. Email, VPNs and accounts with access to critical systems are especially consequential because they can provide access to other business functions or reset routes. CISA recommends phishing-resistant multifactor authentication (MFA) for services, particularly those accounts.
2. Phishing and social engineering can look routine
A message that appears to come from a customer, supplier or colleague can persuade someone to open malicious content or disclose account access. Social engineering can also happen through other channels; the important point is that attackers target people and business processes, not only software. A prompt, blame-free way for staff to report suspicious messages gives the business a chance to act before a mistake spreads.
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3. Exposed remote access can give attackers a route in
Remote desktop services and other remote-access tools help staff and support providers work from outside the office, but exposed or poorly secured services can also be exploited. CISA’s #StopRansomware Guide recommends restricting remote access, closing unused ports, using MFA and logging access. Remote access that is no longer needed should not remain reachable by default.
4. Unpatched internet-facing systems and remote-management tools can be abused
Software exposed to the internet can become an entry point when a vulnerability is known but the system remains unpatched. In a June 4, 2025 advisory, CISA and partner agencies described Play ransomware actors exploiting a vulnerability in SimpleHelp remote monitoring and management (RMM) software after disclosure. That is an example of a documented route, not evidence that all ransomware incidents use it. Advisories in 2026 also describe attacks involving newly disclosed, unpatched internet-facing systems.
5. A third-party or managed-service account can widen the blast radius
IT providers, software vendors and other partners may have access to business systems to perform their work. If that access is compromised or broader than necessary, the incident can reach beyond the provider’s own environment. CISA advises businesses to assess provider security practices, limit provider access to what the role requires and define security and backup responsibilities.
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6. Cloud and backup accounts are part of the attack surface
Using cloud services does not transfer every security responsibility to the provider. A poorly configured account, stolen credentials or excessive permissions can expose cloud data and backups. If an attacker can delete or alter recovery copies through the same account used to manage business systems, those copies may not be dependable when needed. CISA highlights logging, deletion protection or versioning where appropriate, and separate cloud-to-cloud or offline backups.
7. Data theft and recovery sabotage can accompany—or replace—encryption
In double extortion, attackers steal data and threaten to release it while also encrypting systems. CISA also warns that some attackers use data-only extortion, meaning files may remain accessible even though sensitive information has been taken. CISA’s #StopRansomware Guide says: “In some cases, malicious actors may exfiltrate data and threaten to release the data publicly before ransoming the network to further extort the victim and pressure them into paying.” An incident can therefore involve a data breach even if staff can still open their files.
What should a small business prioritize before an attack?
Choose controls that limit account takeover, reduce what attackers can reach and preserve a route to recovery. CISA’s small-business resources and #StopRansomware Guide emphasize these baseline measures:
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- Protect high-impact accounts. Enable phishing-resistant MFA where supported, especially for email, VPN and critical-system accounts. Use separate administrator accounts where practical, and give each account only the permissions its user needs.
- Reduce exposed and unpatched systems. Apply security updates to operating systems and internet-facing software. Remove unnecessary internet exposure, close unused ports and restrict remote-access services to the people and devices that require them.
- Limit and review outside access. Confirm which vendors and managed-service providers can access your systems, restrict access to job requirements, and agree who handles patching, monitoring, backups and incident response. A provider can reduce operational work, but does not remove the business’s responsibility to understand those arrangements.
- Keep useful security visibility. Maintain endpoint protections and logging that can help identify suspicious access and support an investigation. Establish a simple staff reporting route for unexpected messages or account prompts.
- Prepare to restore critical operations. Identify the data and services needed first to keep the business operating, assign recovery responsibilities and make a response and continuity plan before an incident.
How do I protect business backups from ransomware?
Keep critical backups encrypted and separated from the everyday systems and credentials an attacker might compromise. An offline copy is disconnected from the network when not in use; a strongly isolated copy can also help, depending on how access and deletion are controlled. No single storage method is automatically safest: consider how much data it covers, who can change or delete it, how long versions are retained, how quickly it can be restored and who is responsible for configuration.
- Check that backup jobs complete and cover the data the business actually needs.
- Keep at least one encrypted offline or otherwise isolated copy; protect the physical device and disconnect it when it is not being used for backup or recovery.
- For cloud backups, review account permissions, logging, deletion protection and versioning where available. Cloud storage alone does not guarantee a separate, recoverable copy.
- Test restoration of real files and services, not just the backup dashboard. Record what must be restored first and who can perform the steps.
An external hard drive can serve as one offline backup copy if it is encrypted, physically protected and disconnected when not in use. A single drive is not a full continuity plan: it may not cover every critical system, and a backup that has never been restored is not a proven recovery route.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What should I do if my small business is hit by ransomware?
Follow the incident and continuity plans if you have them. Prioritize limiting further harm, preserving information that responders may need and getting qualified help. Avoid making changes that could destroy useful evidence while trying to investigate on your own.
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- Activate the response plan and contact your response lead. Bring in qualified incident-response help if available, and tell relevant internal decision-makers. Use a separate, trusted communication channel if business email or collaboration accounts may be compromised.
- Contain the incident carefully. Work with responders and IT support to isolate affected systems or accounts from the network as appropriate. Do not assume that a device is safe because its files still open.
- Preserve evidence and document events. Keep ransom messages, suspicious emails, relevant logs and a timeline of what staff observed. Record affected systems and business services without deleting or wiping systems before responders can advise.
- Assess both access and data exposure. Determine which accounts, services and information may be involved. If data could have been taken, include breach-response and notification obligations in the response rather than focusing only on restoring files.
- Report and coordinate. Report the incident to the FBI field office or the FBI Internet Crime Complaint Center (IC3), and contact relevant authorities as applicable. The FBI’s ransomware guidance provides reporting channels.
- Restore from verified copies and resume in a controlled order. Confirm that systems are safe to recover, then use tested backups and the business’s recovery priorities. Keep track of what is restored and any remaining service or data issues.
Should a small business pay a ransomware demand?
Do not assume payment will restore data, stop publication threats or prevent another demand. The FBI/IC3 states: “The FBI does not support paying a ransom in response to a ransomware attack.” Discuss the situation with qualified incident responders and relevant authorities; consider operational, legal, regulatory and data-breach implications before making decisions. Preserve the demand and related communications for reporting.
What the available incident figures do—and do not—show
The FBI IC3’s 2025 Annual Report, released in 2026, records more than 3,600 ransomware complaints and reported losses exceeding $32 million. These are reports received by IC3, not a small-business incidence rate or a complete estimate of economic harm. The reported-loss figure generally does not capture costs such as lost business, staff time, wages, files, equipment or third-party remediation, and the IC3 figures exclude reports made directly to FBI field offices. The report also identified 63 new ransomware variants via IC3—an average of 5.25 per month—showing variant churn, not 63 confirmed large-scale campaigns or a direct measure of risk to any one firm.
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