The cybersecurity battlefield evolves daily, with SOC analysts serving as front-line defenders. After years of training SOC teams, I’ve identified 11 core skills that separate effective defenders from the rest.

Here’s the problem: we’re training analysts to look for needles in haystacks when they don’t even know what hay looks like. Too many enter SOC positions without understanding the systems they’re trying to protect.

1. Understanding Operating Systems

You can’t defend what you don’t understand. Period. Master both Windows and Linux. Not just surface stuff, but really get how they work under the hood. Learn through the incident response lens:”If this system were hacked, how would I find the bad guys?”

2. Network Traffic Analysis

Understand TCP/IP and how traffic actually flows (the OSI model matters less than knowing what a SYN flood, DNS tunnel, or C2 beacon looks like on the wire). Know the difference between TCP and UDP, and establish baselines for what normal traffic looks like in your environment.

3. Memory Analysis

Memory forensics shows you malware that might be invisible on disk. Tools like Volatility let you examine processes, connections, and DLLs from a memory dump. This works even when attackers delete their tools or use fileless malware. It’s like catching someone with their hand in the cookie jar.

4. Log Analysis

Logs are your investigative breadcrumbs. Know which ones to collect and how to make sense of them. Remember, no single log tells the whole story. You need to connect multiple data points, like a detective piecing together clues at a crime scene.

5. Endpoint Detection and Response

Master your EDR solutions. Understand how they work, what they can do, and where they fall short. No EDR catches everything. You need to tune these tools, like adjusting the sights on a rifle for better accuracy.

6. Threat Hunting

Don’t just sit back waiting for alerts. Get out there and hunt! Look for threats that slipped past your automated systems. Combine smart hypotheses with data analysis to find attackers living off the land, using legitimate tools for evil purposes.

7. Malware Analysis

Every SOC analyst should know basic static and dynamic analysis. Look at the file without running it, then observe its behavior in a safe sandbox. Learn to spot common techniques like obfuscation and persistence. Know thy enemy, right?

8. Vulnerability Management

Understand different vulnerability types and how they’re exploited. Don’t just focus on CVSS scores. Consider actual exploitability in your environment and the potential impact. A “critical” vulnerability that can’t actually be exploited in your environment isn’t critical for you.

9. Incident Response

When stuff hits the fan, know what to do. Identify what happened, contain it, kick out the attackers, and recover your systems. Document everything. Not just for compliance, but so your team can learn and improve.

10. Automation and Scripting

Automate the boring stuff with PowerShell, Python, or Bash. Create tools that do the repetitive work for you. This frees you up to focus on the complex problems that need human brainpower.

11. Communication and Documentation

Technical skills alone won’t cut it. You need to explain complex technical stuff to different audiences. The most brilliant analysis in the world is useless if you can’t make the bosses understand why they should care.

Conclusion

Mastering these skills won’t happen overnight, but they’re the foundation of being an effective SOC analyst. What makes great analysts stand out isn’t just knowing individual skills but connecting dots across domains: seeing how network traffic ties to endpoint behavior, when log weirdness might point to memory-resident malware, and how vulnerabilities create openings for attackers

By building these core skills, you’ll be ready to protect your organization against even the nastiest threats out there..

While "digital forensics" and "incident response" often appear together (as in the acronym "DFIR"), they represent two distinct disciplines.

What's in a Name?

The American Heritage Dictionary defines forensics as "The use of science and technology to investigate and establish facts in criminal or civil courts of law."

Contrast this with IBM's definition of incident response: "Incident response [...] refers to an organization's processes and technologies for detecting and responding to cyberthreats, security breaches or cyberattacks." Note the absence of any reference to legal proceedings—it simply describes the process by which an organization detects, halts, and recovers from an incident.

Legal Considerations

Although most incidents never end up in court, all should be treated as if they might.

Taking the proper steps before, during, and after response ensures that any data collected can be admissible as evidence.

It's important to know the rules of evidence for relevant jurisdictions. Global corporations should consider each jurisdiction they have locations in when developing standard operating procedures (SOPs). Always include legal counsel when developing your organization's SOPs.

Data Preservation

A common rule for digital evidence is the retention of data in its "original state." This is accomplished by using validated hardware and software to create an exact bit-for-bit copy of a piece of digital media. Yet during incident response, it is rare that full forensic images are created—typically, only a small subset of data is collected from victim devices for analysis. Before any action is taken, consult legal advisors to decide whether to collect full forensic images.

A good practice is to create a folder for the original data, generate and document a hash of its contents, and then create a working copy in a separate folder. Only perform analysis on the working copies of your data to preserve the integrity of the original data.

Documentation

Documentation is critical when handling potential evidence. A chain of custody (CoC) records details about what the data is, where it came from, who collected it, whom it was transferred to, a brief description of what was done to it, and so forth.

The National Institute of Standards and Technology (NIST) provides a sample CoC here:

https://www.nist.gov/document/sample-chain-custody-formdocx

Each person working with the data must keep detailed notes: record dates, times, and any actions taken. Binary files often need to be parsed by special tools to make their data human-readable—include any tool names and versions. The same should be done with human-readable data, such as text-based log files. While you likely don't need to document the version of Excel used to read a log file, if you added a column to show UTC date/time stamps in local time, that is worth noting.

The gold standard for documentation is this: notes should be detailed enough that someone with a similar background can recreate your steps and produce the same results.

This is the scientific method part of digital forensics. Processes need to be repeatable and generate the same results.

Tool Validation Procedures

Before an incident occurs, verify that your hardware and software are working. Test write blockers to ensure they do not alter the evidentiary media. Validate that your forensic software functions correctly (it's not unheard of for new versions to report the wrong date/time stamps when parsing binary data).

While there is no set standard for validation processes, some guidelines exist to help you develop validation SOPs.

Validation SOPs guidelines:

NIST: https://www.dhs.gov/science-and-technology/nist-cftt-reports

SWGDE: http://cet4861.pbworks.com/w/file/fetch/120024474/4861.2014-09-05_SWGDE_Recommended_Guidelines_for_Validation_Testing_V2-0.pdf

Additional Considerations for Incident Handling

When managing incidents, also consider:

• What are the data retention policies of your Endpoint Detection and Response (EDR) tools?
• How is your cloud data preserved?
• Who has access to sensitive or personal data?

These factors often depend on your license agreement with providers. Make sure data can be maintained in a secure, long-term manner, as it can take years until an incident makes it into the courtroom. Implement processes to export incident data from systems and services while preserving integrity and meeting long-term storage requirements that protect its availability and confidentiality. Access to confidential information must always be managed carefully.

Remember: Involve your legal team, validate your tools, work from copies (never original data), document everything meticulously, and maintain chain of custody.

Do your PowerShell scripts keep getting caught? Tired of dealing with EDRs & Windows Defender every time you need to pop a box?  In this one-hour podcast, originally recorded as […]

The post BHIS PODCAST: Endpoint Security Got You Down? No PowerShell? No Problem. appeared first on Black Hills Information Security, Inc..

Do your PowerShell scripts keep getting caught? Tired of dealing with EDRs & Windows Defender every time you need to pop a box?  In this one-hour webcast, we introduce a somewhat […]

The post Webcast: Endpoint Security Got You Down? No PowerShell? No Problem. appeared first on Black Hills Information Security, Inc..