ISC CSSLP - Certified Secure Software Lifecycle Professional Practice Test
- Exam Code: CSSLP
- Exam Name: Certified Secure Software Lifecycle Professional Practice Test
- Updated: Aug 11, 2026
- Q & A: 349 Questions and Answers
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Requirements
Those individuals pursuing the (ISC)2 CSSLP certification must have at least 4 years of cumulative and full-time work experience as a Software Development Lifecycle Professional. They must have practical experience in at least one of the eight domains of the CSSLP Common Book of Knowledge. The applicants with a four-year degree in the Information Technology, computer science, or other related fields with three years of full-time work experience in at least one of the eight domains can also opt for this certificate. Those candidates who do not possess this work experience can proceed to take the prerequisite exam and earn the Associate of (ISC)2 certification. They can gain the prerequisite years of experience within five years after obtaining this associate-level option to upgrade to CSSLP.
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ISC2 CSSLP Exam Syllabus Topics:
| Topic | Details |
|---|---|
Secure Software Concepts - 10% | |
| Core Concepts | - Confidentiality (e.g., covert, overt, encryption) - Integrity (e.g., hashing, digital signatures, code signing, reliability, modifications, authenticity) - Availability (e.g., redundancy, replication, clustering, scalability, resiliency) - Authentication (e.g., multifactor authentication (MFA), identity & access management (IAM), single sign-on (SSO), federated identity) - Authorization (e.g., access controls, permissions, entitlements) - Accountability (e.g., auditing, logging) - Nonrepudiation (e.g., digital signatures, block chain) |
| Security Design Principles | - Least privilege (e.g., access control, need-to-know, run-time privileges) - Separation of duties (e.g., multi-party control, secret sharing and split knowledge) - Defense in depth (e.g., layered controls, input validation, security zones) - Resiliency (e.g., fail safe, fail secure, no Single Point of Failure (SPOF)) - Economy of mechanism (e.g., Single Sign-On (SSO), password vaults, resource) - Complete mediation (e.g., cookie management, session management, caching of credentials) - Open design (e.g., Kerckhoffs's principle) - Least common mechanism (e.g., compartmentalization/isolation, white-listing) - Psychological acceptability (e.g., password complexity, screen layouts, Completely Automated Public Turing test to tell Computers and Humans Apart (CAPTCHA), biometrics) - Component reuse (e.g., common controls, libraries) - Diversity of defense (e.g., geographical diversity, technical diversity, distributed systems) |
Secure Software Requirements - 14% | |
| Define Software Security Requirements | - Functional (e.g., business requirements, use cases, stories) - Non-functional (e.g., operational, deployment, systemic qualities) |
| Identify and Analyze Compliance Requirements | |
| Identify and Analyze Data Classification Requirements | - Data ownership (e.g., data owner, data custodian) - Labeling (e.g., sensitivity, impact) - Types of data (e.g., structured, unstructured data) - Data life-cycle (e.g., generation, retention, disposal) |
| Identify and Analyze Privacy Requirements | - Data anonymization - User consent - Disposition (e.g., right to be forgotten) - Data retention - Cross borders (e.g., data residency, jurisdiction, multi-national data processing boundaries) |
| Develop Misuse and Abuse Cases | |
| Develop Security Requirement Traceability Matrix (STRM) | |
| Ensure Security Requirements Flow Down to Suppliers/Providers | |
Secure Software Architecture and Design - 14% | |
| Perform Threat Modeling | - Understand common threats (e.g., Advance Persistent Threat (APT), insider threat, common malware, third-party/supplier) - Attack surface evaluation - Threat intelligence (e.g., Identify credible relevant threats) |
| Define the Security Architecture | - Security control identification and prioritization - Distributed computing (e.g., client server, peer-to-peer (P2P), message queuing) - Service-oriented architecture (SOA) (e.g., Enterprise Service Bus (ESB), web services) - Rich internet applications (e.g., client-side exploits or threats, remote code execution, constant connectivity) - Pervasive/ubiquitous computing (e.g., Internet of Things (IoT), wireless, location-based, Radio-Frequency Identification (RFID), near field communication, sensor networks) - Embedded (e.g., secure update, Field-Programmable Gate Array (FPGA) security features, microcontroller security) - Cloud architectures (e.g., Software as a Service (SaaS), Platform as a Service (PaaS), Infrastructure as a Service (IaaS)) - Mobile applications (e.g., implicit data collection privacy) - Hardware platform concerns (e.g., side-channel mitigation, speculative execution mitigation, embedded Hardware Security Modules (HSM)) - Cognitive computing (e.g., Machine Learning (ML), Artificial Intelligence (AI)) - Control systems (e.g., industrial, medical, facility-related, automotive) |
| Performing Secure Interface Design | - Security management interfaces, Out-of-Band (OOB) management, log interfaces - Upstream/downstream dependencies (e.g., key and data sharing between apps) - Protocol design choices (e.g., Application Programming Interface (APIs), weaknesses, state, models) |
| Performing Architectural Risk Assessment | |
| Model (Non-Functional) Security Properties and Constraints | |
| Model and Classify Data | |
| Evaluate and Select Reusable Secure Design | - Credential management (e.g., X.509 and Single Sign-On (SSO)) - Flow control (e.g., proxies, firewalls, protocols, queuing) - Data loss prevention (DLP) - Virtualization (e.g., software defined infrastructure, hypervisor, containers) - Trusted computing (e.g., Trusted Platform Module (TPM), Trusted Computing Base (TCB)) - Database security (e.g., encryption, triggers, views, privilege management) - Programming language environment (e.g., Common Language Runtime (CLR), Java Virtual Machine (JVM)) - Operating System (OS) controls and services - Secure backup and restoration planning - Secure data retention, retrieval, and destruction |
| Perform Security Architecture and Design Review | |
| Define Secure Operational Architecture (e.g., deployment topology, operational interfaces) | |
| Use Secure Architecture and Design Principles, Patterns, and Tools | |
Secure Software Implementation - 14% | |
| Adhere to Relevant Secure Coding Practices (e.g., standards, guidelines and regulations) | - Declarative versus imperative (programmatic) security - Concurrency (e.g., thread safety, database concurrency controls) - Output sanitization (e.g., encoding, obfuscation) - Error and exception handling - Input validation - Secure logging & auditing - Session management - Trusted/Untrusted Application Programming Interface (APIs), and libraries - Type safety - Resource management (e.g., compute, storage, network, memory management) - Secure configuration management (e.g., parameter, default options, credentials) - Tokenizing - Isolation (e.g., sandboxing, virtualization, containers, Separation Kernel Protection Profiles (SKPP)) - Cryptography (e.g., payload, field level, transport, storage, agility, encryption, algorithm selection) - Access control (e.g., trust zones, function permissions, Role Based Access Control (RBAC)) - Processor microarchitecture security extensions (e.g., Software Guard Extensions (SGX), Advanced Micro Devices (AMD) Secure Memory Encryption(SME)/Secure Encrypted Virtualization(SEV), ARM TrustZone) |
| Analyze Code for Security Risks | - Secure code reuse - Vulnerability databases/lists (e.g., Open Web Application Security Project (OWASP) Top 10, Common Weakness Enumeration (CWE)) - Static Application Security Testing (SAST) (e.g., automated code coverage, linting) - Dynamic Application Security Testing (DAST) - Manual code review (e.g., individual, peer) - Look for malicious code (e.g., backdoors, logic bombs, high entropy) - Interactive Application Security Testing (IAST) |
| Implement Security Controls (e.g., watchdogs, File Integrity Monitoring (FIM), anti-malware) | |
| Address Security Risks (e.g. remediation, mitigation, transfer, accept) | |
| Securely Reuse Third-Party Code or Libraries (e.g., Software Composition Analysis (SCA)) | |
| Securely Integrate Components | - Systems-of-systems integration (e.g., trust contracts, security testing and analysis) |
| Apply Security During the Build Process | - Anti-tampering techniques (e.g., code signing, obfuscation) - Compiler switches - Address compiler warnings |
Secure Software Testing - 14% | |
| Develop Security Test Cases | - Attack surface validation - Penetration tests - Fuzzing (e.g., generated, mutated) - Scanning (e.g., vulnerability, content, privacy) - Simulation (e.g., simulating production environment and production data, synthetic workloads) - Failure (e.g., fault injection, stress testing, break testing) - Cryptographic validation (e.g., Pseudo-Random Number Generator (PRNG), entropy) - Regression tests - Integration tests - Continuous (e.g., synthetic transactions) |
| Develop Security Testing Strategy and Plan | - Functional security testing (e.g., logic) - Nonfunctional security testing (e.g., reliability, performance, scalability) - Testing techniques (e.g., white box and black box) - Environment (e.g., interoperability, test harness) - Standards (e.g., International Organization for Standardization (ISO), Open Source Security Testing Methodology Manual (OSSTMM), Software Engineering Institute (SEI)) - Crowd sourcing (e.g., bug bounty) |
| Verify and Validate Documentation (e.g., installation and setup instructions, error messages, user guides, release notes) | |
| Identify Undocumented Functionality | |
| Analyze Security Implications of Test Results (e.g., impact on product management, prioritization, break build criteria) | |
| Classify and Track Security Errors | - Bug tracking (e.g., defects, errors and vulnerabilities) - Risk Scoring (e.g., Common Vulnerability Scoring System (CVSS)) |
| Secure Test Data | - Generate test data (e.g., referential integrity, statistical quality, production representative) - Reuse of production data (e.g., obfuscation, sanitization, anonymization, tokenization, data aggregation mitigation) |
| Perform Verification and Validation Testing | |
Secure Software Lifecycle Management - 11% | |
| Secure Configuration and Version Control (e.g., hardware, software, documentation, interfaces, patching) | |
| Define Strategy and Roadmap | |
| Manage Security Within a Software Development Methodology | - Security in adaptive methodologies (e.g., Agile methodologies) - Security in predictive methodologies (e.g., Waterfall) |
| Identify Security Standards and Frameworks | |
| Define and Develop Security Documentation | |
| Develop Security Metrics (e.g., defects per line of code, criticality level, average remediation time, complexity) | |
| Decommission Software | - End of life policies (e.g., credential removal, configuration removal, license cancellation, archiving) - Data disposition (e.g., retention, destruction, dependencies) |
| Report Security Status (e.g., reports, dashboards, feedback loops) | |
| Incorporate Integrated Risk Management (IRM) | - Regulations and compliance - Legal (e.g., intellectual property, breach notification) - Standards and guidelines (e.g., International Organization for Standardization (ISO), Payment Card Industry (PCI), National Institute of Standards and Technology (NIST), OWASP, Software Assurance Forum for Excellence in Code (SAFECode), Software Assurance Maturity Model (SAMM), Building Security In Maturity Model (BSIMM)) - Risk management (e.g., mitigate, accept, transfer, avoid) - Terminology (e.g., threats, vulnerability, residual risk, controls, probability, impact) - Technical risk vs. business risk |
| Promote Security Culture in Software Development | - Security champions - Security education and guidance |
| Implement Continuous Improvement (e.g., retrospective, lessons learned) | |
Secure Software Deployment, Operations, Maintenance - 12% | |
| Perform Operational Risk Analysis | - Deployment environment - Personnel training (e.g., administrators vs. users) - Safety criticality - System integration |
| Release Software Securely | - Secure Continuous Integration and Continuous Delivery (CI/CD) pipeline - Secure software tool chain - Build artifact verification (e.g., code signing, checksums, hashes) |
| Securely Store and Manage Security Data | - Credentials - Secrets - Keys/certificates - Configurations |
| Ensure Secure Installation | - Bootstrapping (e.g., key generation, access, management) - Least privilege - Environment hardening - Secure activation (e.g., credentials, white listing, device configuration, network configuration, licensing) - Security policy implementation - Secrets injection (e.g., certificate, Open Authorization (OAUTH) tokens, Secure Shell (SSH) keys) |
| Perform Post-Deployment Security Testing | |
| Obtain Security Approval to Operate (e.g., risk acceptance, sign-off at appropriate level) | |
| Perform Information Security Continuous Monitoring (ISCM) | - Collect and analyze security observable data (e.g., logs, events, telemetry, and trace data) - Threat intel - Intrusion detection/response - Secure configuration - Regulation changes |
| Support Incident Response | - Root cause analysis - Incident triage - Forensics |
| Perform Patch Management (e.g. secure release, testing) | |
| Perform Vulnerability Management (e.g., scanning, tracking, triaging) | |
| Runtime Protection (e.g., Runtime Application Self-Protection (RASP), Web Application Firewall (WAF), Address Space Layout Randomization (ASLR)) | |
| Support Continuity of Operations | - Backup, archiving, retention - Disaster recovery (DR) - Resiliency (e.g., operational redundancy, erasure code, survivability) |
| Integrate Service Level Objectives (SLO) and Service Level Agreements (SLA) (e.g., maintenance, performance, availability, qualified personnel) | |
Secure Software Supply Chain - 11% | |
| Implement Software Supply Chain Risk Management | - Identify - Assess - Respond - Monitor |
| Analyze Security of Third-Party Software | |
| Verify Pedigree and Provenance | - Secure transfer (e.g., interdiction mitigation) - System sharing/interconnections - Code repository security - Build environment security - Cryptographically-hashed, digitally-signed components - Right to audit |
| Ensure Supplier Security Requirements in the Acquisition Process | - Audit of security policy compliance (e.g., secure software development practices) - Vulnerability/incident notification, response, coordination, and reporting - Maintenance and support structure (e.g., community versus commercial, licensing) - Security track record |
| Support contractual requirements (e.g., Intellectual Property (IP) ownership, code escrow, liability, warranty, End-User License Agreement (EULA), Service Level Agreements (SLA)) | |
Exam Difficulty
When preparing for the CSSLP certification exam, the real world experience is required to stand a reasonable chance of passing the CSSLP exam. ISC recommended study material does not replace the requirement for experience. So, It is very difficult for the candidate to pass the CSSLP exam without experience.
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Preparation Materials for CSSLP Validation
When you want to obtain the CSSLP certification, you should start by taking a look at the vendor’s official site to find official training classes. Then you can continue with the books and materials available on other verified sources. Below, you can find some examples of such materials:
- Official ISC2 CBK Training Seminar for the Certified Secure Software Lifecycle Professional (CSSLP)
This course is delivered by the vendor for any software specialist who wants to learn how to incorporate different security practices into the software development lifecycle. Therefore, at the end of this class, candidates will know how to use authentication, auditing, and authorization techniques in software implementation and design until they reach the deployment and testing phase. To add more, this training is delivered by an authorized ISC2 instructor. Therefore, it meticulously covers all the certification exam topics. Also, this is an online class, which means that the content will be displayed in a series of presentations and the attendees will have the opportunity for individual work as well as work in small teams. In all, they will be exposed to 17 applied scenarios that include activities related to the CSSLP certification topics. Apart from that, candidates will also perform 7 topic-specific activities and participate in 24 discussions that encourage peers to have interactions on the most important domains. At last, applicants will also take part in 8 quizzes at the end of each chapter and receive 160 practice questions at the end of the class to test their preparedness level.
- Official ISC2 Guide to the CSSLP, Second Edition
Such a book can be bought from Amazon and was published by Mano Paul. It is available in Kindle or hardcover formats. This guide includes the most effective and verified means that the candidates can use for self-study while preparing for the CSSLP test. Therefore, this book becomes a helpful tool that deepens their knowledge on security topics and takes them through each phase during the software cycle. In addition, the manual will take the exam-takers through each topic that is tested in the official exam. Apart from the information and examples that it includes, this book also contains many illustrations, which makes learning easier and helps the readers understand how to handle and implement complex concepts related to security. Even for those specialists who are not yet prepared to take the certification exam, this handbook is a valuable reference material that they can use to guide themselves when they deal with security issues.
- ISC2 CSSLP Actual Exam Questions and Answers
This book is available on Amazon in Kindle format for almost $12. It was published by Exam Boost and it comes with the newest practice questions to help the candidates get ready for the CSSLP certification exam. The author updated the book in 2020 and it came with the most updated questions dedicated to the topics assessed in the real test. Also, in comparison to other similar books with practice questions and answers, this one doesn’t include the answers after each question. It allows you to answer the questions first, after which you will find the correct explanations in a table at the end of the book. Overall, the publisher collected 220 questions from previous actual exams. Whenever the vendor changes the questions’ difficulty or structure, Exam Boost will update its workbook and come with helpful resources for its readers.
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