CCST Cybersecurity study guide
CCST Cybersecurity · Work through your exam, one topic at a time.
The Cisco Certified Support Technician (CCST) Cybersecurity is an entry-level Cisco credential aimed at people preparing for a first job in IT support or security operations, and at students coming out of networking academy or self-study programs. It validates that a candidate can talk about security in practical, day-to-day terms rather than at a specialist depth. The CCST Cybersecurity study guide has 5 sections and about 1,760 words.
01Essential Security Principles: CIA, AAA, Least Privilege, and Control Types
Most questions in this domain ask you to classify something - a control, a principle, a crypto tool - rather than to compute anything. So anchor every scenario to what is being protected or proven.
378 words, about 2 min02Basic Network Security Concepts: Layering, Perimeter Controls, and Attack Patterns
Know the layering well enough to say where a control acts: VLANs and switching at Layer 2, IP, ACLs and routing at Layer 3, TCP/UDP ports at Layer 4, TLS and HTTP at Layers 5–7. Ports worth memorizing: 22 SSH, 23 Telnet, 25 SMTP, 53 DNS, 80 HTTP, 443 HTTPS, 445 SMB, 161 SNMP, 3389 RDP.
342 words, about 2 min03Endpoint Security Concepts: Hardening, Malware Families, and Host Controls
Endpoints are where data lives and where most incidents start, so this domain tests whether you can pick the control that addresses a root cause rather than a symptom. A virus needs a host file and usually user action; a worm self-propagates across networks without a host program; a trojan disguises itself as legitimate software; ransomware encrypts or exfiltrates data and demands payment; a rootkit hides at kernel or firmware level; spyware and keyloggers steal data and credentials; a logic bomb triggers on a condition or date; fileless malware lives in memory and abuses legitimate tools like PowerShell.
365 words, about 2 min04Vulnerability Assessment and Risk Management: From Scanning to Risk Response
A vulnerability is a weakness; a threat is who or what could exploit it; an exploit is the tool or technique used; risk combines likelihood and impact in the context of the business. Severity is not risk: a critical CVSS score on an isolated lab host may matter less than a medium score on an internet-facing payment server.
358 words, about 2 min05Incident Handling: Lifecycle, Evidence, and Order of Operations
Use the classic four-phase model: Preparation; Detection and Analysis; Containment, Eradication, and Recovery; Post-Incident Activity . Preparation means playbooks, contact lists, tooling, logging and SIEM coverage, plus tabletop exercises.
317 words, about 2 min