Cyber security is no longer a concern reserved for large enterprises with global reach and deep pockets. Today, small businesses are firmly in the firing line.  

Attackers increasingly target smaller organisations because defences are often lighter, budgets are tighter and people wear many hats. Add remote working, heavy reliance on cloud services and complex supply chains, and the risk grows quickly.  

According to a 2025 report published by the UK government, 43% of UK businesses and 30% of charities stated they had experienced a cyber breach or attack in the 12 months prior. Phishing remains the most common entry point for small firms due to its simplicity, scalability and effectiveness. 

In this blog, we’ll break down why small businesses are targeted, the most common cyber attacks small businesses experience, and how reducing risk is both achievable and cost-effective.  

Why small businesses are being targeted  

One of the most damaging myths in cyber security is business owners assuming they’re “too small to hack”. 

Most modern attacks are automated, with criminals focusing on identifying weak configurations, outdated software, poor passwords and exposed email accounts rather than specific targets. If a system is vulnerable, it becomes an easy target.  

Small businesses are statistically more likely to: 

  • Operate without dedicated IT or security staff  
  • Miss patches and software updates 
  • Reuse or share passwords 
  • Rely heavily on third-party tools and suppliers 

This matters because attackers look for the path of least resistance. Half of all ransomware attacks now target small businesses, and modern phishing emails are increasingly written using AI to appear personal and legitimate.  

The UK’s National Cyber Security Centre reports that organisations now face an average of four nationally significant cyber attacks every week, highlighting how sustained and organised this threat has become.  

The most common cyber attacks on small businesses  

Phishing 

Phishing remains the single biggest risk for small organisations.  

These attacks arrive by email, text message, or phone call and are designed to trick someone into clicking a link, sharing credentials, or approving a payment. Modern phishing emails often look perfect; they use correct branding, tone and timing.  

Business email compromise is a growing concern as attackers gain access to an email account, monitor conversations, then step in at exactly the right moment to redirect payments or steal data.  

The UK government reports that phishing is involved in over 80% of reported breaches affecting UK businesses. Technology alone cannot stop this; human awareness is critical. 

Ransomware attacks  

Ransomware is one of the most disruptive attacks we see. Criminals encrypt systems and demand payment to restore access. Many now use double extortion, stealing data first and threatening to release it publicly. SMEs are more likely to pay because downtime is devastating due to payroll, customer systems and operations often grinding to a halt.  

Recent industry reports show ransomware activity rising again among UK SMEs in 2025. Data from Verizon suggests small businesses are twice as likely to face ransomware than large enterprises.  

Malware and credential theft 

Malware uses spyware, keyloggers, and trojans designed to silently steal data. These threats often arrive via malicious email attachments or links and once installed, they capture login credentials which are then sold on dark web marketplaces. Even without ransomware, stolen credentials can lead to further attacks across cloud services, accounting platforms, and customer systems.  

This is where strong endpoint protection becomes essential. We often recommend layered controls such as modern endpoint security combined with monitoring.  

Insider threats  

Not all threats are external. Insider risk includes accidental mistakes and malicious activity. Common issues include weak passwords, shared devices, poor offboarding processes, and a lack of basic security knowledge. 

Without proper training, people remain the easiest way in, and most incidents we respond to start with a simple human error. 

Supply chain and third-party attacks 

Small businesses increasingly rely on software vendors and SaaS platforms – and attackers know this. By compromising one supplier, criminals can access numerous customers down the supply chain. High-profile incidents involving marketing platforms like Mailchimp have shown how quickly this risk spreads. 

Forbes identified third-party cyber risk as one of the fastest growing threats for organisations of all sizes.  

How small businesses can protect themselves from common cyber attacks

Arc Threat Lens is our latest innovation in cyber security assessment, designed to give businesses a clear, complete and trustworthy view of their IT estate maturity. Built for organisations that need more than a traditional penetration test, Threat Lens brings every security vector together into one powerful, data-driven assessment.

If you want confidence in your security posture, visibility across cloud and on-prem systems, and clear actions to raise your maturity, Threat Lens delivers it.

Discover more here

Real world lessons small business can learn from 

In 2025, several UK retail supply chain breaches exposed thousands of smaller vendors through shared platforms and access tools. Investigations showed many attacks started with one misused account or outdated system. What stands out is not just the breach itself, but the aftermath.  

Recovery costs often far exceed any ransom demand. Legal advice, system rebuilds, customer notifications, lost productivity, and reputational damage quickly escalate. Downtime damages trust, and trust is hard to regain.  

The pattern is consistent. Attacks start small, spready quietly and become expensive, fast.  

Other ways small businesses can reduce their risk 

Reducing cyber risk does not require enterprise budgets: it requires consistency and the right systems.  

Key steps include: 

  • Enabling multi-factor authentication (MFA) across email and cloud systems 
  • Using email security and phishing protection 
  • Protecting laptops and mobiles with modern endpoint tools 
  • Applying regular patching and monitoring 
  • Delivering ongoing employee awareness security training 
  • Implementing 24/7 threat detection and response 

For growing organisations, services such as Managed Detection Response (MDR) provides active security coverage without the need to necessarily build or staff an internal security operations team. Our MDR service is fully managed and delivered by a UK-based team, combining continuous monitoring, advanced threat detection, and expert-led response. Rather than simply generating alerts, our team actively investigates suspicious behaviour, confirms genuine threats, and supports containment and remediation. 

Working towards recognised standards also plays a key role in reducing everyday cyber risk. Cyber Essentials and Cyber Essentials Plus are UK government-backed certifications designed to protect organisations against the most common attacks. We support businesses through the full certification process, from initial gap analysis and remediation through to submission and audit preparation. Recent updates to Cyber Essentials Plus (which are going live later this month) places greater emphasis on identity controls, MFA, and cloud services, making practical implementation and evidence more important than policies alone.  

Alongside these, our wider cyber security services are designed to support small and mid-sized businesses with protection from cyber attacks that is structured and scalable. This includes the previously mentioned Endpoint Security, Email Security, Penetration Testing, Arc Threat Lens and Mobile Device Management. Our focus is on clarity and consistency, ensuring security controls work together to reduce risk without overcomplicating systems or disrupting productivity. 

Conclusion 

Cyber attacks targeting small businesses are increasing and evolving. The idea that size protects you no longer applies. Prevention is consistently cheaper than recovery with a breach costing time, money and trust and a well-planned security approach reducing risks quietly in the background.  

Support from a trusted UK cyber security partner can drastically lower exposure while keeping systems usable and teams productive. If you want to build a layered security approach tailored to your business, talk to us.