As startups experience growth from small teams of 50 to a few hundred staff, management often finds themselves grappling with a new set of challenges. Many organisations are caught off guard by their sudden transition into a mid-sized entity. Often, the focus remains on sales and revenue to drive growth, while cybersecurity and data protection take a back seat. Yet, in the age of digital transformation, this approach can expose businesses to significant risks, particularly concerning data leakage and insider threats.
The Risk of Data Leakage During Growth
As companies scale, so does the volume of sensitive information they handle. This includes proprietary intellectual property (IP) and sensitive customer data. While startups tend to foster a close-knit culture where sensitive data management may feel second nature, the rapid growth toward a mid-sized organisation can complicate these processes. With more employees, systems, and external partnerships, the risk of data leakage increases. Employees leaving the organisation may carry with them knowledge that can be leveraged by competitors, potentially causing irreversible damage to the company’s competitive edge. This exodus of critical IP can be especially harmful when top talent joins competing firms.
Management in growing companies may not even realise that they’ve reached a stage where these risks have become material threats. By the time they’re mid-sized, significant vulnerabilities can already exist within the organisation’s security infrastructure. The urgency to protect critical data from internal and external threats becomes paramount.
Embedding Security Early On
The key to mitigating these risks lies in embedding a culture of security from the outset, rather than retroactively trying to change organisational behaviour once growth has occurred. Establishing a strong security posture early helps to fortify the organisation as it scales. This involves not only implementing robust data protection policies but also having clear, proportionate visibility into how sensitive data moves through the organisation, and being open with staff about it.
However, it is essential to note that most data leakage is not the result of malicious intent. The large majority of unsanctioned activity by staff is negligent or accidental. Employees often lack the awareness or understanding of secure practices, inadvertently compromising security. For example, employees may unknowingly forward sensitive files to a personal email account to work on at home, or paste customer data into an AI tool to save time, potentially opening up security vulnerabilities. The challenge for management is to guide staff on best practices, offering the necessary support and training, rather than treating them as suspects.
Building a Strong Security Culture
Building a security-conscious workforce is vital in preventing insider risk. Organisations need to invest in systems which educate employees about data protection, risk management, and compliance. Through these initiatives, companies can proactively address data leakage and insider threats before they become serious issues.
One of the most effective ways to support this culture is to understand where your sensitive data lives and how it actually moves, so that gaps in awareness and process can be found and fixed. That is what a platform such as ShadowSight is built for, and it does it without overwhelming people with unnecessary alerts or disruptions.
ShadowSight: Visibility into Data Leakage and Insider Risk
ShadowSight is a Microsoft 365 security intelligence platform. It can be managed by ShadowSight’s analysts, your own team, or a mix of both, and it addresses data leakage and insider risk without drowning you in alert noise.
Some of its key features:
- Behavioural detection on top of Microsoft 365: Data Leakage Prevention adds a behavioural detection layer over Microsoft 365 activity. It catches insider data loss that looks like ordinary, legitimate work and that native Microsoft 365 DLP rules miss, such as data moving to personal email or AI tools.
- Validated alerts, not noise: Every alert is validated by analysts (ShadowSight’s, your own, or both) before it reaches you, so your team spends its time on what matters. 24/7 validation is available where you want it.
- Knowing where sensitive data lives: ShadowSight Data Risk discovers and classifies sensitive data across SharePoint (including Teams files), OneDrive, Exchange email and Windows file servers. It shows who can reach that data and where Microsoft Purview labels don’t match what’s stored, and recommends whether to delete, archive, migrate or remediate, with the evidence. It is read-only.
- A fair read on how work gets done: WorkPulse, included with the platform, gives a role-calibrated view of office vs. remote and team vs. team efficiency from Microsoft 365 activity metadata. It never looks at message content, keystrokes or screens.
Quick to Start, with Your Data Kept in Your Region
ShadowSight connects through one read-only Microsoft 365 admin consent. There are no endpoint agents to roll out (only a lightweight collector if Windows file shares are included), and content is analysed in place. Customer data is stored in the Azure region where your business is located, and AI analysis uses Azure OpenAI in that same region, supporting data sovereignty.
A Proof of Value runs on your own Microsoft 365 tenant, so you can see what ShadowSight finds in your own environment before you commit. See how it’s managed for the options.
Changing Behaviour, Not Catching People
Because most non-compliant activity is not malicious, the value of finding it lies mostly in what happens next: a quiet word, clearer guidance, or a fix to a process that pushes people toward workarounds. Looking across validated findings also tends to reveal systemic issues, such as a policy nobody understands or a sharing practice a whole team has drifted into. Fixing those reduces risk for everyone and builds a more secure environment without eroding trust.
In Summary
For organisations that are experiencing growth, protecting sensitive information should be a top priority. The transition from startup to mid-sized enterprise brings with it a host of challenges, but the loss of intellectual property and data leakage doesn’t have to be one of them. By embedding a culture of security early on and leveraging tools like ShadowSight, companies can safeguard their most valuable assets while continuing to scale effectively. A proactive, proportionate approach to insider risk management will not only help retain competitive advantage but will also foster trust within the organisation and with its external stakeholders.
CEO & Co-Founder, ShadowSight
Who is Christopher McNaughton
Chris is a proficient problem solver with a strategic aptitude for anticipating and addressing potential business issues, particularly in areas such as Insider Threat, Data Governance, Digital Forensics, Workplace Investigations, and Cyber Security. He thrives on turning intricate challenges into opportunities for increased efficiency, offering pragmatic solutions derived from a practical and realistic approach.
Starting his career as a law enforcement Detective, Chris transitioned to multinational organisations where he specialised and excelled in Cyber Security, proving his authority in the field. Even under demanding circumstances, his commitment to delivering exceptional results remains unwavering, underpinned by his extraordinary ability to understand both cyber and business problems swiftly, along with a deep emphasis on active listening.