Top 5 Cybersecurity Threats for SMBs in 2026

As 2025 nears its close, it’s time to look ahead at potential cybersecurity threats for 2026. What kinds of cybersecurity threats might small and medium sized businesses face in 2026?

The following five threats represent the most significant and costly risks for SMBs:

1. Phishing and Business Email Compromise (BEC): Phishing remains the #1 entry point for attackers. In 2021, a city in Georgia lost nearly $1 million in taxpayer money due to a BEC attack “ and this was a regular, non-AI attack. AI is making this type of attack exponentially more dangerous. Attackers use generative AI to create highly convincing, grammatically perfect, and contextually relevant spear-phishing emails or even “deepfake” voice/video messages that impersonate executives or trusted vendors. Without the safeguards in place, protocols and staff training to follow these protocols, SMBs can easily be duped.
2. Ransomware with Double Extortion:Ransomware continues to be devastating while the double extortion tactic”stealing data before encrypting it”guarantees a costly, potentially crippling outcome. If the victim refuses to pay the ransom for the decryption key, the attackers threaten to publicly leak the stolen sensitive data. A costly example of this attack happened in 2023 to the city of Oakland, California. Attackers breached city systems and threatened to release information if not paid. The city did not pay and as a result a massive data dump happened and both city employees and residents data were exposed; everything from SSN to medical information was exposed to the dark web. Residents and the police union filed claims against the city. Recently, a settlement was reached with the police and claimants which will cost at least $1.75 million. This is in addition to $10 million the city had to pledge to remediate their computer systems.
3. Third-Party and Supply Chain Compromise: Hackers are increasingly targeting the weakest link in the supply chain ”a smaller, less secure vendor, and often, SMs ”to gain access to all its clients networks, including the SMB target. Especially for SMBs with a high reliance on external vendors (e.g., cloud providers, payment processors, managed service providers), this is an area of increasing, escalating risk. Often, the very risks that your organization might be facing“ AI phishing, training, hardware, insider threats, etc. “ are what other vendors and clients of yours face. In the Oakland California ransomware attack, for example, city vendors and contractors could not be paid for services they rendered because the city’s systems were compromised.
4. Negligence in Cloud Services and SaaS Applications: As SMBs move more data and operations to cloud platforms, like AWS, Microsoft 365, or Google Workspace, simple human error in settings of security, permissions, misconfigurations, or assigning overly broad access permissions create easily exploitable vulnerabilities for attackers. One example of this kind of breach is the Clorox-Cognizant lawsuit where Clorox alleges that IT services firm Cognizant was negligent in its IT helpdesk services and gave broad access permissions to a hacker group who then used the access to disrupt Clorox’s business operations. Cognizant in turn criticized Clorox’s own internal cybersecurity protocols, citing that Clorox contracted Cognizant for helpdesk services, not cybersecurity. Clorox is suing for $380 million and while the case is still active, it illustrates the need to coordinate cybersecurity with numerous other vendor solutions. If large corporations need to coordinate cybersecurity with third party vendor services and solutions, even more so for SMBs.
5. Unmanaged Insider Threats:While often overlooked, the human element accounts for a vast majority of breaches. Whether it’s a negligent employee who clicks a malicious link (accidental insider) or a disgruntled worker intentionally stealing data (malicious insider), a single team member can compromise the entire business.

Potential Costs of Unaddressed Threats

The financial damage from a successful attack extends far beyond the ransom demand or immediate IT costs. For an SMB, the average cost to remediate a breach can range from $120,000 to over $1.2 million, depending on the severity.

But given some of the real-life examples cited above, damages from cyberattacks could range from $2 million to $380 million!

• Business Interruption: System downtime, lost employee productivity, and lost sales revenue. Potential loss of $8,000 to $20,000 per hour of downtime.
• Forensics & Remediation: Hiring external experts to investigate the breach, contain the damage, and fully restore systems. This process can cost $30,000 to over $100,000 for a thorough investigation.
• Regulatory Fines & Legal Fees: As the cases with Clorox vs Cognizant and the city of Oakland, penalties for violating data privacy laws (like HIPAA or GDPR) if customer data is compromised, legal fees and settlements can reach millions of dollars. For SMBs, these kinds of costs can be fatal.
• Reputational Damage: Even if the fees and settlements, and the cost of remediation is sustainable, the reputational damage to an SMB can result in loss of customer trust, loss of accounts, and long-term erosion of the brand that indirectly costs of future customers.

Best Solutions to Combat Threats

Combating these threats requires a layered, pragmatic approach tailored to an SMB’s budget and resources. The following solutions are particularly effective, with a special focus on mitigating third-party vendor risk:

1. Implement Multi-Factor Authentication (MFA): This is the single most effective control against credential theft and phishing. It should be mandatory for all business applications, especially email and cloud services.
2. Business Continuity & Disaster Recovery Backups (3-2-1 Rule): Implement the 3-2-1 backup strategy: Keep 3 copies of your data, on 2 different media, with 1 copy stored off-site and offline (air-gapped) to be safe from ransomware.
3. Software Updates: Cyber criminals use automated systems, even AI-enhanced systems to scour for unpatched, outdated software systems and attack from there. Keeping your systems updated on patches and updates help mitigate your cyberattack vulnerabilities.
4. Strong Password Management: Too often passwords are weak and therefore vulnerable to attackers. Making sure you and your staff use strong passwords and a vetted password management system help mitigate against cyber-attacks.
5. Regular Security Awareness Training: Employees must go through mandatory and regular training and drills to recognize phishing attempts, especially AI-enhanced phishing, and social engineering tactics.

Finally, consider contracting a vCIO, a virtual Chief Information Officer, who can bring on the experience and expertise of a CIO to your company without the overhead. The vCIO can help with building a full IT to cybersecurty plan, help organize policies and protocols, and even institute reviews of third party contracts to ensure that your contracts with your vendors do you expose, even inadvertently, a back door to cyber criminals.