Overview of programming languages relevant to cybersecurity and IT. You don't need to master all of these — but knowing which tool to reach for when is half the battle.
Languages by Use Case
Security / Scripting (Learn These First)
| Language |
Notes |
| bash-scripting-guide |
Linux shell scripting — you'll use this daily |
| powershell-scripting-guide |
Windows equivalent — essential for AD/Windows security |
| Python |
The pentest language — Scapy, Impacket, custom tools |
| ruby-programming-guide |
Metasploit is Ruby — writing custom modules |
Systems / Low Level
| Language |
Notes |
| assembly-language-guide |
Shellcode, malware analysis, reverse engineering |
| cpp-programming-guide |
C++ — security tools, exploits, OS internals |
| c-programming-language-guide |
C# — Windows red team tools, .NET malware |
Web (Phishing, App Testing)
| Language |
Notes |
| html-web-development-guide |
Structure of web pages — phishing pages |
| css-styling-guide |
Styling web pages — making phishing pages convincing |
| php-programming-guide |
Server-side backend — credential capture scripts |
| JavaScript |
Client-side attacks, XSS payloads |
Enterprise / Cloud
| Language |
Notes |
| java-programming-guide |
Enterprise apps, Log4Shell, Android |
| powershell-scripting-guide |
Azure, Active Directory, Windows automation |
| bash-scripting-guide |
Linux servers, cloud instances |
Hardware / Embedded
| Language |
Notes |
| arduino-programming-guide |
Microcontroller C++ — Bad USB, hardware tools |
| assembly-language-guide |
Embedded firmware, microcontrollers |
Windows Automation
| Language |
Notes |
| windows-batch-scripting-guide |
Legacy .bat scripts — still seen everywhere |
| powershell-scripting-guide |
Modern Windows scripting |
Priority Order for Security Professionals
- Bash — mandatory, use it constantly
- Python — the #1 security scripting language
- PowerShell — if you do Windows/AD work
- HTML/PHP — if you do web pentesting or social engineering
- Ruby — if you use Metasploit heavily
- Assembly — if you do exploit dev or reverse engineering
- C/C++ — if you write custom tools or analyze malware
Python for Security (Essential Library List)
python
# Networking and exploitation
import scapy.all # Packet crafting
import impacket # Windows/AD protocols
import pwntools # Exploit development
import requests # HTTP
# Parsing and analysis
import pyshark # Packet analysis
import cryptography # Crypto operations
# Install
pip install scapy impacket pwntools requests pyshark cryptography
Choosing the Right Language
- Quick script/automation → Bash (Linux) or PowerShell (Windows)
- Custom network tool → Python (with scapy/sockets)
- Metasploit module → Ruby
- Phishing page backend → PHP
- Windows post-exploitation → C# or PowerShell
- Shellcode → Assembly
- Reverse engineering → Read C/C++ disassembly in Ghidra/IDA
- Microcontroller/hardware → Arduino C++
Sub-pages
- bash-scripting-guide - Bash scripting
- powershell-scripting-guide - PowerShell
- php-programming-guide - PHP
- html-web-development-guide - HTML
- css-styling-guide - CSS
- java-programming-guide - Java
- ruby-programming-guide - Ruby
- assembly-language-guide - Assembly
- cpp-programming-guide - C++
- c-programming-language-guide - C#
- arduino-programming-guide - Arduino
- windows-batch-scripting-guide - Batch scripting