The latest articles on DEV Community by LayerByte (@layerbyte). https://dev.to/layerbyte https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F4123360%2Fd06386b1-094b-4bb4-9d30-ad7479cb1131.jpg https://dev.to/layerbyte en LayerByte Sun, 13 Sep 2026 16:38:50 +0000 https://dev.to/layerbyte/netcalc-educational-defensive-security-tool-51ho https://dev.to/layerbyte/netcalc-educational-defensive-security-tool-51ho <h1> Netcalc </h1> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Ff9i45dsxkmpnew3gsgzm.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Ff9i45dsxkmpnew3gsgzm.png" alt="LayerByte showcase banner for Netcalc - Educational Defensive Security Tool" width="800" height="420"></a></p> <p>IPv4/CIDR subnet calculator.</p> <p>School Purpose Only.</p> <p>Netcalc turns IPv4 and CIDR practice into a small repeatable command-line workflow.</p> <h2> What It Is </h2> <p>Netcalc is one of my LayerByte educational cybersecurity projects. The goal is to keep the project practical, readable, and safe for school-focused defensive learning.</p> <p>Repository: <a href="https://github.com/LayerByte/netcalc" rel="noopener noreferrer">https://github.com/LayerByte/netcalc</a></p> <h2> Why I Built It </h2> <p>I wanted each project in this collection to focus on one clear concept instead of becoming a huge toolkit. That makes it easier to read the code, understand the workflow, and test it with small authorized examples.</p> <h2> Defensive Scope </h2> <ul> <li>Local or authorized input only</li> <li>Beginner-readable output</li> <li>Clear validation and error handling</li> <li>No credential theft, brute forcing, exploitation, malware, evasion, or destructive behavior</li> </ul> <h2> Good Learning Use Cases </h2> <ul> <li>Read the code and follow the control flow.</li> <li>Run the project against a small non-sensitive sample.</li> <li>Compare the raw input with the final output.</li> <li>Write short notes about what the tool checks and what it intentionally avoids.</li> </ul> <h2> Tech Stack </h2> <ul> <li>Language: cpp</li> <li>License: MIT</li> <li>Purpose: educational defensive security</li> </ul> <h2> GitHub </h2> <p>You can find the project here:</p> <p><a href="https://github.com/LayerByte/netcalc" rel="noopener noreferrer">https://github.com/LayerByte/netcalc</a></p> <p>Thanks for checking it out. Feedback is welcome, especially ideas that keep the project safe, clean, and useful for learning.</p> cybersecurity beginners opensource cpp LayerByte Sun, 13 Sep 2026 16:38:49 +0000 https://dev.to/layerbyte/fileprobe-educational-defensive-security-tool-26ok https://dev.to/layerbyte/fileprobe-educational-defensive-security-tool-26ok <h1> Fileprobe </h1> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Ftyvjzsx9yhsyqrq8cr3x.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Ftyvjzsx9yhsyqrq8cr3x.png" alt="LayerByte showcase banner for Fileprobe - Educational Defensive Security Tool" width="800" height="420"></a></p> <p>Binary file header and metadata inspector.</p> <p>School Purpose Only.</p> <p>Fileprobe focuses on file signatures and metadata so beginners can see why extensions alone are not enough.</p> <h2> What It Is </h2> <p>Fileprobe is one of my LayerByte educational cybersecurity projects. The goal is to keep the project practical, readable, and safe for school-focused defensive learning.</p> <p>Repository: <a href="https://github.com/LayerByte/fileprobe" rel="noopener noreferrer">https://github.com/LayerByte/fileprobe</a></p> <h2> Why I Built It </h2> <p>I wanted each project in this collection to focus on one clear concept instead of becoming a huge toolkit. That makes it easier to read the code, understand the workflow, and test it with small authorized examples.</p> <h2> Defensive Scope </h2> <ul> <li>Local or authorized input only</li> <li>Beginner-readable output</li> <li>Clear validation and error handling</li> <li>No credential theft, brute forcing, exploitation, malware, evasion, or destructive behavior</li> </ul> <h2> Good Learning Use Cases </h2> <ul> <li>Read the code and follow the control flow.</li> <li>Run the project against a small non-sensitive sample.</li> <li>Compare the raw input with the final output.</li> <li>Write short notes about what the tool checks and what it intentionally avoids.</li> </ul> <h2> Tech Stack </h2> <ul> <li>Language: cpp</li> <li>License: MIT</li> <li>Purpose: educational defensive security</li> </ul> <h2> GitHub </h2> <p>You can find the project here:</p> <p><a href="https://github.com/LayerByte/fileprobe" rel="noopener noreferrer">https://github.com/LayerByte/fileprobe</a></p> <p>Thanks for checking it out. Feedback is welcome, especially ideas that keep the project safe, clean, and useful for learning.</p> cybersecurity beginners opensource cpp LayerByte Sun, 13 Sep 2026 16:38:48 +0000 https://dev.to/layerbyte/entropyx-educational-defensive-security-tool-3hfk https://dev.to/layerbyte/entropyx-educational-defensive-security-tool-3hfk <h1> Entropyx </h1> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fmqtw5d58y7gr92km8hpe.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fmqtw5d58y7gr92km8hpe.png" alt="LayerByte showcase banner for Entropyx - Educational Defensive Security Tool" width="800" height="420"></a></p> <p>File entropy calculator for defensive file analysis.</p> <p>School Purpose Only.</p> <p>Entropyx shows how file entropy can be used as a safe static-analysis concept for comparing ordinary files with unusual binary samples.</p> <h2> What It Is </h2> <p>Entropyx is one of my LayerByte educational cybersecurity projects. The goal is to keep the project practical, readable, and safe for school-focused defensive learning.</p> <p>Repository: <a href="https://github.com/LayerByte/entropyx" rel="noopener noreferrer">https://github.com/LayerByte/entropyx</a></p> <h2> Why I Built It </h2> <p>I wanted each project in this collection to focus on one clear concept instead of becoming a huge toolkit. That makes it easier to read the code, understand the workflow, and test it with small authorized examples.</p> <h2> Defensive Scope </h2> <ul> <li>Local or authorized input only</li> <li>Beginner-readable output</li> <li>Clear validation and error handling</li> <li>No credential theft, brute forcing, exploitation, malware, evasion, or destructive behavior</li> </ul> <h2> Good Learning Use Cases </h2> <ul> <li>Read the code and follow the control flow.</li> <li>Run the project against a small non-sensitive sample.</li> <li>Compare the raw input with the final output.</li> <li>Write short notes about what the tool checks and what it intentionally avoids.</li> </ul> <h2> Tech Stack </h2> <ul> <li>Language: cpp</li> <li>License: MIT</li> <li>Purpose: educational defensive security</li> </ul> <h2> GitHub </h2> <p>You can find the project here:</p> <p><a href="https://github.com/LayerByte/entropyx" rel="noopener noreferrer">https://github.com/LayerByte/entropyx</a></p> <p>Thanks for checking it out. Feedback is welcome, especially ideas that keep the project safe, clean, and useful for learning.</p> cybersecurity beginners opensource cpp