Cyber Security for Small Businesses: Protecting Your Company from Digital Threats

Cyber security is the practice of protecting digital systems and data from unauthorized access, use, or damage by malicious actors. Cyber security is not only a concern for large corporations and governments but also for small businesses that rely on digital technologies to operate and grow. According to a report by Verizon, 43% of cyber attacks in 2019 targeted small businesses, and only 28% of them felt prepared to handle such threats. Cyber attacks can cause significant financial losses, reputational damage, legal liabilities, and operational disruptions for small businesses. Therefore, it is essential for small business owners to understand the risks and implement effective cyber security measures to protect their companies from digital threats.

What are the common cyber threats for small businesses?

Cyber threats are constantly evolving and becoming more sophisticated and diverse. Some of the common cyber threats that small businesses may face include:

  • Malware: Malicious software that can infect computers and devices, steal data, damage files, disrupt operations, or spy on users. Malware can be delivered through email attachments, web downloads, removable media, or network connections. Some examples of malware are viruses, worms, trojans, spyware, adware, ransomware, and rootkits.
  • Phishing: Fraudulent emails that impersonate legitimate entities and try to trick recipients into clicking on malicious links, opening infected attachments, or providing sensitive information. Phishing can be used to steal credentials, install malware, or conduct identity theft. Phishing emails can look very convincing and use various techniques such as spoofing, social engineering, or urgency to lure victims.
  • Ransomware: A type of malware that encrypts the victim’s data and demands a ransom for its decryption. Ransomware can lock users out of their systems, disrupt business operations, and cause data loss or leakage. Ransomware attacks can be triggered by opening a phishing email, visiting a compromised website, or connecting an infected device. Some examples of ransomware are CryptoLocker, WannaCry, Ryuk, and REvil.
  • DDoS: Distributed denial-of-service attacks that overwhelm a website or server with a large volume of traffic and prevent legitimate users from accessing it. DDoS attacks can cause downtime, lost revenue, and reputational harm. DDoS attacks can be launched by hackers, competitors, activists, or disgruntled customers using botnets or compromised devices.
  • Data breaches: Unauthorized access or disclosure of confidential or personal data by hackers, insiders, or third parties. Data breaches can result in financial losses, legal penalties, customer dissatisfaction, and competitive disadvantage. Data breaches can occur due to weak security controls, human errors, malicious insiders, or external attacks. Some examples of data breaches are Equifax (2017), Marriott (2018), Capital One (2019), and SolarWinds (2020).

How can small businesses protect themselves from cyber threats?

There is no one-size-fits-all solution for cyber security, as different businesses may have different needs and vulnerabilities. However, some general steps that small businesses can take to improve their cyber security posture include:

  • Assess your risks: Identify your most valuable and sensitive data, systems, and assets, and evaluate the potential threats and impacts of a cyber attack on them. You can use tools such as the Cybersecurity Framework by the National Institute of Standards and Technology (NIST) or the Cyber Essentials by the UK government to guide your risk assessment process. These tools provide a set of standards and best practices for managing cyber security risks across five core functions: identify, protect, detect, respond, and recover.
  • Implement security controls: Based on your risk assessment, implement appropriate security controls to protect your data, systems, and assets from cyber threats. Some examples of security controls are:
    • Antivirus software: Software that scans your computers and devices for malware and removes or quarantines them.
    • Firewalls: Hardware or software that filters incoming and outgoing network traffic and blocks unauthorized or malicious connections.
    • Encryption: A process that transforms data into an unreadable format that can only be decrypted with a key or password.
    • Backup: A copy of your data that is stored in a separate location or device that can be restored in case of data loss or corruption.
    • Password management: A system that helps you create, store, and manage strong and unique passwords for your accounts and devices.
    • Multi-factor authentication: A method that requires two or more pieces of evidence to verify your identity before granting access to your accounts.
  • Access control: A system that defines who can access what data and systems and under what conditions.
  • Network segmentation: A technique that divides your network into smaller subnetworks that have different security levels and access rules.
  • Patch management: A process that updates your software and devices with the latest security fixes and enhancements.
  • Educate your staff: Train your employees on the basics of cyber security and how to avoid common pitfalls such as phishing emails, weak passwords, or unsafe web browsing. Make sure they understand their roles and responsibilities in protecting the company’s data and systems. You can use online resources such as the Cybersecurity Awareness Training by the Federal Trade Commission (FTC) or the Cyber Aware by the UK government to educate your staff. You can also conduct regular tests and simulations to assess their knowledge and skills.
  • Monitor your network: Regularly monitor your network activity and look for any signs of suspicious or anomalous behavior. You can use tools such as intrusion detection systems (IDS), intrusion prevention systems (IPS), or security information and event management (SIEM) software to help you detect and respond to potential cyber incidents. You can also hire external experts or consultants to perform audits or assessments of your network security.
  • Update your policies: Establish clear and consistent policies and procedures for cyber security and ensure they are communicated and enforced across your organization. Your policies should cover topics such as acceptable use of devices and networks, incident response and reporting, data retention and disposal, vendor management, and compliance with relevant laws and regulations. You can also use frameworks such as the ISO 27001 or the NIST Cybersecurity Framework to help you develop and implement your policies.


Cyber security is a vital aspect of running a successful small business in the digital age. By following the steps outlined above, you can reduce your exposure to cyber threats and enhance your resilience in the face of cyber attacks. Remember that cyber security is not a one-time effort but an ongoing process that requires constant vigilance and adaptation. By investing in cyber security now, you can save yourself from costly consequences later.