Cybersecurity is no longer a concern exclusive to large enterprises. Today, small and medium-sized businesses (SMEs) also handle sensitive information, customer data, corporate email, administrative systems, cloud platforms, and internet-connected devices.

The issue is that many SMEs believe they are protected simply because they have antivirus software or because “nothing has ever happened.” However, a security incident can start with something as simple as a weak password, a phishing email, or a pending update.

That’s why having a basic cybersecurity checklist for SMEs helps identify risks and make better decisions before a problem occurs.

1. Strong Passwords

The first step is to review how passwords are created and managed. Avoid reused, easy-to-guess, or shared passwords among employees. Ideally, use long, unique passwords and, if possible, a password manager. It is also important to change default credentials on devices, routers, cameras, and internal systems.

The FTC recommends changing default passwords and limiting access to sensitive information only to those who truly need it.

2. Multi-Factor Authentication

Multi-factor authentication (MFA) adds an extra layer of security. This means that, in addition to a password, the user must verify their identity using another method, such as an app, code, or security key.

CISA recommends enabling MFA, especially for administrator accounts, as they are high-value targets for attackers.

3. Updated Backups

Every SME should maintain regular backups of critical information. This includes databases, operational files, administrative documents, and key systems. However, it is not enough to create backups. It is also necessary to test that they can be restored correctly.

Backups are essential for recovery from failures, human errors, or attacks such as ransomware.

4. Enterprise Antivirus and Endpoint Protection

Antivirus remains an important layer of protection. However, for businesses, it is advisable to evaluate more comprehensive solutions that include protection against malware, ransomware, and suspicious behavior.

Every computer, server, or network-connected device can become an entry point. Therefore, endpoint protection should be part of the baseline security strategy.

5. Firewall and Network Security

A firewall helps control incoming and outgoing network traffic. It is a necessary barrier to reduce unauthorized access and protect internal systems. Additionally, it is important to review Wi-Fi configurations, separate guest and employee networks, and avoid uncontrolled open access.

6. Updates and Patching

Updates fix bugs and vulnerabilities. When a company leaves systems, browsers, applications, or servers unpatched, its exposure increases.

The FTC recommends regularly updating security software and automating updates whenever possible.

7. Permissions and Access Control

Not all employees need access to all information. Proper access control reduces the impact if an account is compromised. Review who has access to folders, systems, email, administrative platforms, and vendor accounts. Access should be assigned based on actual job roles.

8. Phishing Awareness Training

Human error remains one of the main risks. An employee may click on a malicious link, download a harmful file, or unknowingly share credentials. For this reason, training should be continuous. Teaching staff how to identify suspicious emails can prevent costly incidents.

9. Alert Monitoring

Having tools is not enough if no one reviews the alerts. Monitoring allows detection of unusual activity, access attempts, failures, or suspicious behavior.

10. Incident Response Plan

Every company should know what to do if an incident occurs. Who should be notified? Which systems should be isolated? How will data be recovered? Who communicates the situation?

NIST recommends that SMEs develop a cybersecurity risk management strategy, even if they do not yet have advanced plans in place.

At Nubetia, we help businesses assess their current security posture, implement appropriate solutions, and strengthen their technology operations.

If you want to understand your company’s current level of protection, Nubetia can help you assess it. You can schedule a consultation call here.

References: 

Cybersecurity and Infrastructure Security Agency. (s. f.). Cyber guidance for small businesses. U.S. Department of Homeland Security. https://www.cisa.gov/cyber-guidance-small-businesses

Federal Trade Commission. (s. f.). Cybersecurity for small business. https://www.ftc.gov/business-guidance/small-businesses/cybersecurity

National Institute of Standards and Technology. (2024). NIST cybersecurity framework 2.0: Small business quick-start guide. U.S. Department of Commerce. https://www.nist.gov/publications/nist-cybersecurity-framework-20-small-business-quick-start-guide