10 Common Network Security Threats Facing Businesses in 2025

Unfortunately, cybersecurity can’t be treated like a luxury; it’s long been a necessity for businesses all over the world. 

As digital infrastructure becomes more complex, there are constantly evolving network security threats. Without decent security, you face disruptions to your operations, compromised data and damage to your business's reputation.

At Silver Cloud Technology, we understand the importance of providing proactive protection. 

 As a leading independent IT support provider, we help businesses stay secure with cost-effective, bespoke IT solutions.

Here are 10 of the most common network security threats businesses are up against in 2025.

1. Phishing Attacks

Thanks to advancements in AI, phishing has become more sophisticated than ever. It remains one of the most effective and common methods of attack. 

Cybercriminals have honed their tactics, using AI to create convincing emails and fake websites that trick employees into handing over login credentials or downloading malicious files. Since remote and hybrid work is still highly popular, phishing attempts have unsurprisingly become more common.

To reduce the risk, it’s vital to train staff regularly, introduce email filtering, and use

multi-factor authentication (MFA) across all accounts.

2. Ransomware 

Ransomware attacks continue to escalate in both frequency and the devastating impact. Such attacks work by encrypting critical data, then demanding payment for its release. It can affect all types of businesses in London, including healthcare, legal and manufacturing organisations, which are popular targets thanks to the sensitive nature of their data.

In order to reduce the risk, you must regularly back up data, segment your network, and keep security patches up to date. Silver Cloud Technologies can proactively protect your data from these types of attacks.

3. Insider Threats

Whether it’s intentional or an accident, insider threats (when employees or contractors use access erroneously) are becoming more common. In 2025, data breaches from within organisations account for a growing percentage of cyber incidents, often due to poor access control or not enough monitoring.

It’s vital to only introduce access to certain staff, monitor network activity, and create clear policies around data handling.

4. Zero-Day Exploits

Lesser known than other threats, ‘zero-day vulnerabilities’ are flaws in software or hardware that are unknown to the vendor and exploited by attackers before a patch is released. These types of threats are difficult to defend against since they’re new and often undetectable. Often the damage is done before a company realises what’s happening. 

Consequently, such attacks require a multi-layered security approach. Working with an IT support partner like Silver Cloud Technology ensures timely updates and rapid response to emerging threats.

5. IoT (Internet of Things) Vulnerabilities

Does your business in London use smart devices? Whether it’s in an office or warehouse, these types of gadgets have become a major target. Many IoT devices lack basic security features, making them easy targets for attackers to access wider networks.

It’s recommended to only use devices from trusted vendors, change default passwords, and isolate IoT devices on separate networks.

6. Man-in-the-Middle (MitM) Attacks

MitM attacks occur when cybercriminals intercept communication between two parties in order to steal data or inject malicious content. These attacks often occur when someone is using unsecured public Wi-Fi connections or poorly configured VPNs.

To protect against them, always use encrypted communication protocols, secure VPNs, and educate staff about safe internet usage when working remotely.

7. Cloud Misconfiguration

More companies than ever are using cloud security, but misconfigured cloud settings remain a top cause of data leaks. Whether it’s unsecured storage buckets or lax permissions, poor cloud configuration can give attackers an open door into business systems.

Our team in London can provide secure cloud infrastructure that protects your business. 

8. Credential Stuffing

This automated attack uses stolen usernames and passwords from previous breaches to access people’s accounts. Since many of us reuse passwords, attackers often gain access to business systems with little resistance.

It’s therefore vital to implement strong password policies, implement MFA, and use monitoring tools to detect unusual login activity.

9. Supply Chain Attacks

In 2025, attackers are increasingly targeting suppliers and service providers to infiltrate larger organisations. By compromising a third-party vendor with access to your systems, cybercriminals can bypass traditional security defences.

It’s vital to monitor any suspicious behaviour within your supply chain.

10. AI-Powered Attacks

While AI helps defend against threats, it's also being weaponised by attackers. AI is now used to automate attacks, craft realistic phishing messages, and bypass security systems through adaptive techniques.

It’s vital to invest in AI-based threat detection, stay informed on the latest trends, and work with a forward-thinking IT support partner who understands how to defend against next-generation threats.

At Silver Cloud Technology, we don’t believe in one-size-fits-all solutions. We work closely with SMBs, mid-market, and corporate businesses to design bespoke, cost-effective IT security strategies that scale with your growth. Whether you need help managing your cloud infrastructure, securing remote teams, or responding to threats in real time, we’ve got you covered.

Contact Silver Cloud Technology today and discover how we can help protect your business in 2025 and beyond.