In today’s modern world, everything is connected. As a result, having a dedicated cybersecurity division has become a top priority.
The days when a simple antivirus program protected your personal computer are now distant memories of a bygone era. Cybercriminals have evolved into sophisticated organizations whose attacks are increasingly complex, structured, and effective. Worse still: every one of us is an easy target.
The Problem
When we hear about “hacks” or online attacks, most of us picture a teenager typing code in a dark room.
While that scenario is possible, the major attacks that make the news are actually executed by organizations that spend months planning their strategy before making a move. They have physical workspaces, specialized hardware, schedules, and even regular salaries—just like any legitimate business.
There is an entire marketplace built around this industry, serving consumers from diverse cultures and backgrounds: curious individuals seeking technical knowledge, self-proclaimed “hackers,” IT staff seeking control, corporations trying to steal trade secrets from competitors, and even governments or nations engaged in warfare.
What Can We Do?
Turning off the internet is clearly not an option. We must step up, accept the challenge, and find effective ways to counter the dark side of the digital world. The SOC (Security Operations Center) is tasked with taking up the fight to defend what often seems indefensible.
What is a SOC, and Why Do We Need One?
SOC stands for Security Operations Center. Wikipedia defines a SOC as a function encompassing the “people, processes, and technologies involved in providing methods for detecting, containing, and resolving threats.”
What a SOC provides to an organization is continuous prevention, protection, and detection of potential attacks across its network. Given that a virus can spread through a network in a matter of seconds, every second counts.
The ability to stop an attack in real time, isolate an infected file, or block malicious traffic from entering or leaving your network is invaluable.
Building a SOC from Scratch
A SOC can begin with just a single person possessing IT knowledge and access to local PCs and network devices. There are several open-source tools available for implementation: firewalls like pfSense and Shorewall; Intrusion Prevention Systems (IPS) such as Snort and Suricata; Intrusion Detection Systems (IDS) like Zeek (formerly Bro) and OSSEC; and network traffic analyzers like Wireshark.
To manage these tools in a single place, you can look into Security Onion—a specialized Linux distribution designed for intrusion detection, enterprise security monitoring, and log management.
There are numerous tutorials available to help you get started, as well as books dedicated entirely to using Security Onion, explaining how it operates and how you can use it to build your own SOC.
