Beyond the Toolkit: When Cybersecurity Pros Build Their Own 'Best Tools'

In the vast and ever-evolving landscape of cybersecurity, professionals rely on a diverse arsenal of tools, from industry-standard suites to specialized niche applications. But what happens when the perfect tool doesn't exist? Or when a unique problem demands an unconventional solution? Often, the answer lies in the ingenuity of the individual, leading them to program or create their own 'best tool.'

A recent Reddit thread on r/cybersecurity posed this very question: "What was the best 'tool' you programmed/made?" The responses were a fascinating blend of practical utilities, innovative security projects, and even tales of accidental corporate integration, highlighting the power of custom solutions.

From Open Source to Personal Projects: Tools in Action

Many Reddit users proudly showcased their public or semi-public projects, demonstrating a commitment to solving real-world problems and contributing to the community. One notable mention was redhand.io/analyzer, a tool designed for network analysis. Praised for its utility, one commenter lamented its lack of mobile optimization, suggesting its potential as a companion to tools like 'pcapdroid' – a testament to its practical application in the field.

Another user shared a treasure trove of personal GitHub repositories, revealing a diverse portfolio of security-focused creations:

Evil-M5Project and Evil-BW16: Likely offensive security tools leveraging specific hardware platforms.
Raspyjack: Implies a Raspberry Pi-based tool, potentially for network or physical access.
NanoC6-ESP32-Honeypot: A clever defensive tool designed to lure and analyze attacks on IoT or embedded devices.
PwnGridSpam: Sounds like a tool for network exploitation or targeted spamming, perhaps for social engineering exercises.

These examples underscore the varied needs within cybersecurity, from deep-dive analysis to hardware-level exploits and defensive countermeasures, often requiring custom code to bridge gaps or automate complex processes.

The Accidental Corporate Innovation: A Tale of Ingenuity

Perhaps the most captivating story came from an ex-sales engineer whose 'best tool' led to an unexpected career turning point. In his early days, integrating a company's product for customer demos was a tedious, 40-80 hour coding marathon for each client.

Recognizing this inefficiency, he decided to build a pre-compiler using YACC and C++, transforming weeks of work into a mere half-day. This personal automation tool became his secret weapon. The story took a dramatic turn during a demo at AT&T:

"The product manager asked me what I was doing. So ... against my better judgement, I told him. He asked for my 'tool'. I told him it wasn't a company supported tool, and I couldn't give it to them. Under some intense pressure he convinced me to give him the tool with the promise he wouldn't tell anyone where he got it from."

The moment he landed back home, the company was barraged with requests for the tool's user manual from AT&T. Fearing the worst, he was summoned to the office. Instead of being fired for sharing unsanctioned intellectual property, the engineering team reviewed his code, recognized its immense value, integrated it into their core product, and gave him a raise – with a firm "never do that again!" instruction. This story perfectly illustrates how grassroots innovation, born out of a desire for efficiency, can dramatically impact a company's bottom line.

Mastering the Machine: The Foundational Skills

Another fascinating contribution, though not strictly cybersecurity, came from a user who built a highly optimized text file editor for DOS in their youth. This editor, packed into a mere 32 KB executable, featured multi-file editing, copy/paste, file comparison, and even the ability to jump to error lines from compiler output. Written in C and Assembly, it still functions flawlessly in DOSBox today.

While seemingly a general programming feat, this kind of foundational understanding of system resources, memory management, and low-level programming is incredibly valuable in cybersecurity. It's the skillset that allows professionals to understand vulnerabilities at their deepest level, reverse engineer malware, or write highly efficient exploits and defensive tools.

Why Build Your Own?

The common thread running through these diverse tools and stories is the drive to solve problems. Whether it's to automate a tedious task, fill a gap in existing commercial offerings, or simply to push the boundaries of what's possible, custom tools are a hallmark of skilled professionals. They represent:

Efficiency: Automating repetitive tasks, saving valuable time.
Niche Solutions: Addressing highly specific problems that commercial tools don't cover.
Deep Understanding: Building a tool forces a deeper comprehension of the underlying systems and protocols.
Innovation: Creating new ways to approach challenges, often leading to breakthroughs.

The Reddit thread serves as a powerful reminder that while robust commercial tools are essential, the true spirit of cybersecurity often lies in the hands-on creation of tailored solutions by dedicated individuals.

Key Takeaways

Custom tools are vital for addressing specific, often niche, challenges in cybersecurity.
Grassroots innovation can lead to significant efficiency gains and even corporate product integration.
Strong foundational programming skills (even from older eras) are invaluable for deep cybersecurity work.
The drive to solve problems and automate tasks is a core characteristic of ingenious professionals.

Source

https://www.reddit.com/r/cybersecurity/comments/1m8dcjh/what_was_the_best_tool_you_programmedmade/