The Top Cybersecurity Threats Facing British Businesses in 2026

Security teams are finding it increasingly difficult to provide a robust defence against professional cybercriminals who continue to sharpen their skills to infiltrate their operations and cause havoc.

And if you believe your business is not big enough to be of interest to cybercriminals – think again! Cyberattacks are as damaging to SMEs as they are to large corporations.

E2E Technologies is a managed IT provider at the coal face of cybersecurity. We protect our clients by implementing sophisticated cybersecurity and safeguarding measures across their IT infrastructure, using the latest software and hardware, alongside clear procedures and user protocols.

Is your cybersecurity adequate for the needs of your business, and sufficiently scalable to combat new and evolving cyber threats?

Let’s explore the top cyber threats facing British businesses in 2026 to establish if you’re truly cybersecurity ready…

Is your business protected against these cyber threats?

Here are just some of the cyber threats facing all businesses from SMEs to large corporations in 2026.

Phishing / social engineering

Social engineering is a tactic increasingly used by hackers in which they rely on trust between colleagues and third party contacts to launch a successful cyberattack. This is used in phishing scams whereby the attacker impersonates a colleague or contact in an email or message, instructing them to carry out particular actions such as sharing sensitive data or transferring money to a ‘new’ bank account.

According to the Home Office Cyber Security Breaches 2025 survey, despite greater vigilance and a decrease of 7% in occurrences amongst small businesses, compared to 2024, “phishing attacks remain the most prevalent and disruptive type of breach or attack (experienced by 85% of businesses and 86% of charities)”.

The solution:

• Regular phishing awareness training
• Anti-phishing tools
• Enable multi-factor authentication (MFA) as an additional security barrier
• Real-time monitoring of emails to detect threats

Ransomware

The same Home Office survey found the estimated percentage of all businesses who experienced a ransomware crime increased from under 0.5% in 2024 to 1% (an estimated 19,000 businesses) in 2025. Globally, there were 7,419 ransomware attacks in 2025 compared to 5,631 attacks recorded in 2024.

In a ransomware attack, hackers encrypt a business’s data, threatening to leak the information unless a ransom is paid. SMEs are particularly at risk of ransomware attacks because hackers expect them to have weaker defences.

The solution:

• Regular backups stored offline
• Device protection
• Restricted access rights for staff
• A clear ransomware response plan

Cloud misconfiguration

Cloud misconfiguration occurs when cloud based systems are set up incorrectly, leaving data, apps and sometimes an entire IT infrastructure vulnerable to unauthorised access.

As more and more businesses adopt cloud based services such as Microsoft 365 or Google Cloud, the risk of cloud misconfigurations and their consequences will increase. Misconfigured cloud data storage systems have the potential to expose a staggering number of records to cyber threats.

The solution:

• Implement cloud landing zones. These are multi-account environments that allow workloads, apps and IT infrastructures to be securely stored in the cloud
• Enable multi-factor authentication
• Regularly review cloud configurations
• Apply the Principle of Least Privilege (PoLP) where users are given the minimum levels of access needed for their role

Supply chain risks

Supply chains pose a significant cybersecurity risk for businesses, particularly when suppliers are given third party access, or they hold personal data or intellectual property belonging to the client.

Phishing attacks, viruses or malware also often originate from suppliers. Despite this, just 14% of businesses review the risks posed by their immediate suppliers.

The solution:

• Run regular, comprehensive vendor security assessments
• Implement zero trust network policies
• Monitor and regularly update supplier access rights
• Incorporate security requirements into contracts

Credential stuffing

Sometimes we may not even know when our personal data, passwords and other credentials have been stolen. When employees use the same password for multiple sites and applications, they put the business at risk of an automated cyberattack. Hackers can automate logins using bots and stolen credentials to access and steal data. This is credential stuffing.

The solution:

• Force employees, suppliers and other third parties to use strong, unique passwords and have these regularly updated
• Implement multi-factor authentication
• Monitor systems for failed login attempts or suspicious login patterns, and block them as soon as they are detected
• Implement credential stuffing detection tools that compare login attempts against databases of breached credentials

Human error

Employees are often unintentionally responsible for cyberattacks. Human error such as falling victim to phishing scams, using weak passwords, carelessly sharing sensitive data and ignoring protocols weakens a business’s cybersecurity.

The solution:

• Introduce and maintain robust security policies
• Train and retrain on cybersecurity and threat awareness
• Automate and enforce software updates with deadlines
• Implement multi-factor authentication

Remote working

Remote or hybrid working is now widespread across businesses of all sizes. While it gives employers and employees greater flexibility, remote working can also result in a lack of control, causing security gaps to appear, particularly when employees use their own devices.

Without adequate security updates, personal devices, printers, webcams and similar equipment can all become entry points for hackers.

The solution:

• Enforce the use of secure VPNs (virtual private networks) for private access
• Only allow the use of authorised, company owned devices to control security updates
• Segment networks into isolated subnetworks to limit security breaches
• Enforce the Principle of Least Privilege

How AI is making the threat of cyberattacks worse

Artificial intelligence (AI) is exacerbating the threat of cyberattacks for UK businesses. In its ‘Impact of AI on Cyber Threat from Now to 2027’ report,  the National Cyber Security Centre claims, “Keeping pace with ‘frontier AI’ capabilities will almost certainly be critical to cyber resilience for the decade to come.”

Areas of concern:

• AI is being increasingly adopted by cybercriminals to run faster ransomware attacks with higher ransom demands.
• Autonomous AI agents used by companies for various tasks including data analysis, customer support and financial administration, may well improve operational efficiencies, but they are also making data more accessible to hackers, thanks to the extensive security access they are given.

A compromised AI agent can carry out security breaches at speed, while delaying detection. As well as data theft, typical breaches include unauthorised financial transactions, manipulation of automated workflows and intellectual property theft.

• AI generated deepfake technology is also advancing at an unstoppable rate, forging video calls, voice messages and audio instructions to bypass security controls.

Boost your cybersecurity with E2E Technologies

Speak to E2E Technologies about protecting your IT infrastructure and making your cybersecurity scalable to handle changes within your business, without disruption.