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Jack Nunziato, known as the Cybersecurity Warrior of NYC, shares his journey and expertise in the cybersecurity field, with a notable presence at RSA 2025. His insights highlight the importance of robust security practices in today’s digital landscape.
You Should Know: Essential Cybersecurity Commands & Practices
1. Network Security & Monitoring
- Scan for Open Ports (Nmap):
nmap -sV -T4 <target_IP>
- Check Active Connections (Netstat):
netstat -tulnp
- Capture Network Traffic (Tcpdump):
sudo tcpdump -i eth0 -w capture.pcap
2. Linux Hardening
- Disable Unnecessary Services:
sudo systemctl disable <service_name>
- Check for SUID/SGID Files (Potential Privilege Escalation):
find / -perm -4000 -type f 2>/dev/null
3. Windows Security Checks
- List Scheduled Tasks (PowerShell):
Get-ScheduledTask | Select TaskName, State
- Check Firewall Rules:
netsh advfirewall firewall show rule name=all
4. Malware Analysis
- Extract Suspicious File Hashes (Linux):
sha256sum <file>
- Analyze Processes (Windows):
Get-Process | Where-Object { $_.CPU -gt 50 }
5. Log Analysis
- Search Failed SSH Logins (Linux):
grep "Failed password" /var/log/auth.log
- Check Windows Event Logs:
Get-WinEvent -FilterHashtable @{LogName='Security'; ID=4625}
What Undercode Say
Cybersecurity is an evolving battlefield, and mastering command-line tools is crucial for defense. Whether you’re hardening Linux systems, analyzing Windows logs, or monitoring network traffic, automation and vigilance are key.
- For Deep Packet Inspection: Use `Wireshark` or
Tshark. - For Incident Response:
volatility -f memory_dump.raw --profile=Win10x64 pslist
- For Secure File Transfer:
scp file.txt user@remote:/path/
Stay ahead with continuous learning—follow cybersecurity conferences like RSA 2025 for cutting-edge insights.
Expected Output:
A structured cybersecurity guide with actionable commands for network defense, system hardening, and threat analysis.
References:
Reported By: Jacknunz Activity – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
