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A Guide to Security Investments: The Anatomy of a Cyberattack

Torsten George March 12, 2025
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NAC, SDN, SASE, CASB, IDaaS, PAM, IGA, SIEM, TI, EDR, MDR, XDR, CTEM—the list goes on. If this “alphabet soup” sounds familiar, it is because organizations worldwide are deploying an array of security tools, all promising protection against data breaches. Global spending on information security is projected to reach $212 billion in 2025, a 15.1% increase from 2024, according to a recent Gartner forecast.

With such significant investments, one might assume we are several steps ahead of cybercriminals. Yet, hardly a week goes by without a new high-profile cyberattack—whether it’s the mass exploitation of a PHP vulnerability, data breaches across multiple healthcare organizations, or ransomware attacks on enterprises like Tata Technologies.

This raises a crucial question: Are we focusing on the right security measures? The sheer number of tools deployed does not determine an organization’s cyber resilience. What truly matters is the efficacy of these security controls and the ability to disrupt the attack chain in its early stages. To achieve this, organizations must understand the anatomy of a cyberattack.

The Reality of Cyberattacks

For years, cyberattacks have been portrayed as sophisticated operations exploiting zero-day vulnerabilities, requiring advanced coding techniques to break through seemingly impenetrable defenses. The reality is quite different:

Today, cyber adversaries are not hacking in—they are logging in. Attackers primarily exploit weak, stolen, or compromised credentials. According to the 2024 Verizon Data Breach Investigations Report, 80% of breaches involve phishing and credential misuse.

Despite this, many organizations still allocate the largest share of their security budget to perimeter defenses rather than investing in controls that address the most common attack vectors: credential abuse and compromised endpoints.

This is a critical mistake. To build an effective cybersecurity strategy, organizations must understand how hackers operate, identifying their tactics, techniques, and procedures (TTPs). This requires a deep dive into the cyberattack lifecycle.

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The Anatomy of a Cyberattack

While various models exist to describe the cyberattack lifecycle—also known as the kill chain—most follow the same fundamental three-phase structure. These phases apply to both external and insider threats.

Phase 1: Compromise

Most cyberattacks begin with credential harvesting. Attackers use:

Once they obtain credentials, cybercriminals use brute force, credential stuffing, or password spraying to gain access.

Since these attacks bypass traditional perimeter defenses, organizations must shift their mindset and adopt a Zero Trust approach, which assumes attackers are already inside the network. This perspective should shape security architecture, investments, and policies moving forward.

Phase 2: Explore

After gaining access, attackers conduct reconnaissance, mapping out the network to identify valuable assets, privileged accounts, and security controls. Their primary targets include:

  • Domain controllers
  • Active Directory
  • Critical servers

To limit reconnaissance and lateral movement, organizations should implement Privileged Access Management (PAM) best practices, including:

  • Enforcing multi-factor authentication (MFA) everywhere
  • Applying just-enough, just-in-time privilege controls
  • Establishing access zones
  • Using a secure admin environment

Phase 3: Exfiltrate and Cover Up

Once attackers locate sensitive data, they escalate privileges to exfiltrate information while covering their tracks. Common tactics include:

  • Creating backdoors (e.g., SSH keys) for future access
  • Disabling security logs and alerts
  • Masquerading as legitimate users

To counteract these threats, organizations should:

  • Enforce MFA across all accounts
  • Air-gap administrative accounts (as recommended by Microsoft)
  • Implement host-based auditing and monitoring
  • Leverage machine learning to detect anomalous privileged user behavior

Conclusion

Understanding hackers’ TTPs is essential for aligning security measures with real-world threats. Organizations must recognize that security is not about the number of tools deployed, it is about ensuring those tools effectively disrupt the attack chain at every stage. Ultimately, security investments should align with real-world attack tactics, not just tool proliferation.

By prioritizing credential security, endpoint protection, and Zero Trust principles, businesses can significantly reduce their risk exposure and build true cyber resilience.

About The Author

Torsten George

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