What Most Often Causes Cyber Incidents?

NEW YORK - EntSun -- Cyber incidents aren't usually elite hacks but the result of long-ignored basics. One gap may be harmless, yet several can align into a direct failure path. Seeing this turns vague fear into measurable business risk and shifts focus to practical prevention over theoretical threats.

Human behavior remains the primary vulnerability in security systems

No system exists apart from its users. Even robust infrastructure can fail if credentials leak. Phishing and social engineering persist because behavior is harder to fix than systems. Common patterns include:

• employees entering credentials on convincing fake login pages;
• passwords shared via messengers for convenience or urgency;
• one password reused across several accounts;
• no multi-step authentication on privileged accounts.

One compromised account is often enough: attackers use legitimate access, blend into normal activity, and detection is delayed because nothing looks "broken."

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Technical debt and the legacy of quick decisions

Rapid product development often creates shortcuts. Risk grows when "temporary" fixes become permanent and stop being reviewed. The most common sources of risk include:

• outdated frameworks and libraries with public CVEs;
• exposed ports and services no longer monitored;
• APIs missing rate limits, logging, or authorization;
• test accounts and environments containing real data.

These gaps take little effort to exploit: automated tools find them and attackers use them at scale.

Lack of an independent security perspective

Teams used to the same system often see it as predictable, creating blind spots. Attackers don't share internal assumptions. External testing reveals:

• real attack chains, not isolated flaws;
• minor issues that combine into full access;
• business impact: downtime, data loss, reputational risk.

That's why penetration testing and security audits are practical tools for systems handling finance, personal data, or complex infrastructure.

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The approach taken by external security specialists – such as the team at Datami – is based not on abstract checklists, but on modeling real attacker actions – the way an attack looks in real life, not in documentation.  This makes it possible to identify not only individual issues, but also critical scenarios that can remain unnoticed for years.

Lack of incident response processes

Many incidents escalate due to late detection. Without monitoring, logging, and a clear response plan, a small breach can go unnoticed: access is compromised and data copied while systems seem "normal," and the company finds out from customers or partners after the damage is done.

Summary

Cyber incidents rarely come out of nowhere. They usually grow from everyday issues—user mistakes, messy systems left after rapid growth, and security applied inconsistently—until small gaps align into easy openings. Recognizing this shifts security from reacting after damage to reducing exposure beforehand, through disciplined processes, regular review, and realistic defenses that work in real environments.