Improving data security across business systems

Data security has become one of the biggest concerns for modern businesses - and for good reason.

Every year, organisations rely on more systems, more applications, and more connected devices than before. What used to sit neatly on a single office server now exists across cloud platforms, remote devices, collaboration tools, and third-party applications.

At the same time, cyber threats continue to grow in both volume and sophistication.

Recent research shows that nearly seven in ten IT leaders rank data security as their top priority when modernising systems. Yet only around a third say they feel extremely confident they would pass their next regulatory audit.

That gap matters.

Because while many businesses are investing in new technology, not all of them are fully confident they understand where their data lives, who has access to it, or how secure their systems really are.

And for most organisations, this complexity hasn’t happened overnight.

It’s developed gradually.

Over the years, businesses have introduced Microsoft 365, cloud storage, CRM systems, finance platforms, remote working tools, and countless other applications designed to improve productivity.

At the same time, older systems often remain in place because they still support key operations.

The result is a mix of old and new technology working side by side.

That’s completely normal. However, it also creates new security challenges that many businesses underestimate.

One of the biggest difficulties businesses now face is visibility.

When data exists across several platforms, answering even simple questions becomes more difficult:

• Who currently has access to sensitive information?
• Are former employees still able to log in somewhere?
• Which systems contain customer or financial data?
• Are files being shared securely?
• Is business data stored in personal devices or unmanaged apps?

Day to day, most of these issues remain invisible.

Staff can still access their systems. Emails continue flowing. Files sync successfully. The business carries on operating.

However, behind the scenes, complexity builds.

Many businesses now operate in what’s known as a hybrid infrastructure environment - a combination of cloud services, local servers, remote devices, and third-party platforms.

The problem is that security responsibilities become spread across multiple systems, suppliers, and users.

Without regular reviews, businesses can easily lose track of:

• Old accounts
• Excessive permissions
• Unused applications
• Duplicate data
• Unsupported systems
• Weak security policies

Over time, these small gaps create larger risks.

Another issue many organisations face is reliance on legacy systems.

A legacy system is simply older technology that still performs an important role within the business.

That might include:

• Older accounting software
• On-premise servers
• Manufacturing systems
• Databases
• File storage systems
• Older operating systems

The challenge is that many of these systems were never designed for today’s security landscape.

Some may no longer receive regular security updates. Others may not support modern protections such as multi-factor authentication or advanced access controls.

Yet businesses often continue relying on them because replacing them can feel disruptive, expensive, or complicated.

There’s also a growing skills gap.

Research continues to show that many organisations struggle to find people with the right expertise to manage modern IT environments properly.

Technology has evolved rapidly over the past decade. Businesses are now expected to manage cloud security, endpoint protection, identity management, compliance requirements, backup policies, and remote working environments all at once.

That’s a significant challenge, particularly for small and medium-sized businesses without a large internal IT team.

As a result, many businesses operate in a position where systems technically function - but nobody feels entirely confident in how secure everything really is.

One of the most overlooked areas of data security is user access.

In many businesses, permissions evolve organically over time.

Someone changes departments.
A manager requests temporary access.
A new platform gets introduced quickly.
A supplier needs access to a shared folder.

Months or years later, those permissions often remain unchanged.

This creates a situation where people may have access to information they no longer need.

That matters because cyber criminals increasingly target user accounts rather than systems themselves.

If attackers gain access to a legitimate user account, they can often move through systems without triggering immediate suspicion.

That’s why strong access management has become essential.

Businesses should regularly review:

• User accounts
• Administrative privileges
• Shared mailboxes
• File permissions
• Third-party access
• Remote access policies

Access should reflect how your business operates today - not how it operated several years ago.

Artificial intelligence is becoming a major focus for many businesses.

From Microsoft Copilot to AI-powered automation tools, organisations are exploring ways to improve productivity, automate tasks, and streamline operations.

In many ways, that’s positive.

However, AI introduces another important consideration:

AI systems rely heavily on access to business data.

If your existing data environment is poorly managed, AI can unintentionally expose weaknesses much faster.

For example:

• AI tools may surface sensitive documents more easily
• Poorly controlled permissions may become more visible
• Duplicate or outdated data may spread further
• Users may accidentally expose confidential information

In simple terms, AI tends to amplify whatever already exists.

If your data environment is organised, secure, and well managed, AI can deliver significant benefits.

Improving data security often starts with relatively practical steps: 

For many businesses, keeping on top of cyber security, user access, compliance, backups, updates, and day-to-day IT management can quickly become time-consuming and difficult to manage internally - especially as systems continue to evolve.

That’s where outsourcing IT support can make a real difference.

At MCS Group, we help businesses reduce the burden of managing technology internally by providing proactive support, security management, strategic guidance, and ongoing system monitoring - all designed to keep your business secure, productive, and supported.

And if you’re unsure whether outsourcing IT support could actually save your business money, we’ve recently launched a new IT Support Cost Calculator within the MCS Hub.

It’s designed to help businesses estimate the cost of outsourced IT support, compare it against internal IT resource costs, and better understand what proactive support could look like for their business.

📞Book a short call with one of our account managers to discuss your current setup and identify potential risks.