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The most dangerous cyberthreats don’t always come from the outside.
Intellectual property theft, accidental data leaks, or simple negligence: internal incidents now account for over 30% of security breaches in organizations. Yet most companies still focus primarily on perimeter defenses (EDR, firewalls, antivirus), leaving a critical blind spot at the heart of their operations.
This blog is inspired by a real scenario: an anonymous employee sends a USB drive containing stolen data to a competitor.
Imagine this happening in your organization. Would you be able to detect the leak in time?
Internal threats are rising sharply, driven by remote work, expanded cloud usage, and the growing volume of sensitive data circulating across devices and applications. At the same time, the financial impact continues to climb, the average cost of an insider-related incident reached USD $15.38 million in 2023, a 34% increase since 2020. With employees accessing critical systems from multiple locations and attackers increasingly targeting user credentials, detecting internal risks has become significantly more complex.
Hybrid work multiplies remote access to critical systems. Data flows between personal devices, public Wi-Fi and low security networks, and cloud services each representing a potential entry point.
Organizations handle increasing amounts of intellectual property, confidential contracts, and customer information. A misconfigured share, a stolen laptop or an unencrypted external backup is enough to trigger a major breach.
Fatigue, overload, dissatisfaction, or simple mistakes: most internal incidents are not malicious but accidental. Lack of training, visibility, implicit trust and lack of proactive monitoring amplifies these risks. Recent industry data highlights the scale of the issue, 30% of all data breaches now involve internal actors, whether through negligence or intentional misuse.
A user accessing sensitive files outside normal hours or exfiltrating large amounts of data always leaves a trail. NDR (Network Detection and Response) technologies detect these abnormal behaviors in real time.
Cross-referencing network logs, remote connections, user actions, and file transfers helps identify anomalies before they escalate. StreamScan’s 24/7 SOC continuously detects and analyzes these risk patterns to trigger precise, timely alerts.
Internal security depends as much on technology as on organizational culture. Training employees, clarifying expectations, and encouraging proactive reporting increases collective vigilance without creating a climate of mistrust.
The goal isn’t to monitor every action, it’s to create an environment where security is a shared responsibility.
Effective practices include:
Transparency and education create a healthier and safer environment than intrusive surveillance.
Internal threats combine unpredictable human factors with growing technical complexity. Only an integrated approach detection technology, correlation, human expertise, and a strong internal culture can sustainably reduce this risk.
Don’t let a USB stick decide the fate of your organization. Schedule your internal risk assessment with a StreamScan expert. Discover how our 24/7 SOC and advanced network correlation technologies detect suspicious behavior before it causes real damage.
