--- title: "#steganography articles | Hashnode" description: "Explore 37 articles tagged #steganography on Hashnode. Tutorials, guides, and how-tos from the community." url: "https://hashnode.com/tag/steganography" --- Tag # #steganography 37 posts · 0 followers [Molly Sohaney](https://hashnode.com/@mollysohaney) · [2d ago](https://hashnode.com/posts/ctf-writeup-colour-shift-forensics-css-ctf-2026-return-of-nexus/6af269c71ea7a90df35b4d0b) ### [CTF Writeup: Colour Shift | Forensics | CSS CTF 2026: Return of Nexus](https://mollysohaney.hashnode.dev/ctf-writeup-colour-shift-forensics-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) Description In 1666 Issac Newton split light into their compositve wavelengths. Can you? Flag format: CSSCTF{...} We're given: colorshiftctf.bmp Overview This challenge hands us a single bitmap o 5 min read · [mollysohaney.hashnode.dev](https://mollysohaney.hashnode.dev/ctf-writeup-colour-shift-forensics-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) [Muhammad Ali Mughal](https://hashnode.com/@ali978123) · [Oct 23](https://hashnode.com/posts/how-to-hide-a-secret-message-inside-an-image-a-practical-guide-to-steganography/6adb79bc998dc4e227bcb2a9) ### [How to Hide a Secret Message Inside an Image: A Practical Guide to Steganography](https://resume-ai.hashnode.dev/how-to-hide-a-secret-message-inside-an-image-a-practical-guide-to-steganography?utm_source=hashnode&utm_medium=feed) Encryption hides what a message says. Steganography hides the fact that there's a message at all. I'm Muhammad Ali Mughal, and I built PixelValut, a browser-based tool for hiding text inside images. W 7 min read · [resume-ai.hashnode.dev](https://resume-ai.hashnode.dev/how-to-hide-a-secret-message-inside-an-image-a-practical-guide-to-steganography?utm_source=hashnode&utm_medium=feed) [Molly Sohaney](https://hashnode.com/@mollysohaney) · [Oct 11](https://hashnode.com/posts/ctf-writeup-2-1-senses-osint-steganography-css-ctf-2026-return-of-nexus/6acb2d09c298f7015a41883e) ### [CTF Writeup: 2(-1) | Senses | OSINT | Steganography | CSS CTF 2026: Return of Nexus](https://mollysohaney.hashnode.dev/ctf-writeup-2-1-senses-osint-steganography-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) Description A sound has came from deep space. We have tried to decipher is but it seems to alude us. Please note, if you play this file it is advised you turn down your volume to prevent hearing dama 4 min read · [mollysohaney.hashnode.dev](https://mollysohaney.hashnode.dev/ctf-writeup-2-1-senses-osint-steganography-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed) [Hritik ranjan](https://hashnode.com/@luvranjan143) · [Oct 10](https://hashnode.com/posts/steganovault-with-docker/6aca37433062f4ccd4cf56b5) ### [🔐 Building SteganoVault: A Production-Grade Steganography Tool with Docker, Flask, MySQL, and Nginx](https://blogs.hritikranjan.in/steganovault-with-docker?utm_source=hashnode&utm_medium=feed) I built SteganoVault, a full-stack steganography platform that can hide secret messages inside images, text files, PDFs, DOCX documents, audio, and video. The application runs as a 4-container Docker Compose architecture using Flask, Gunicorn, MySQL, Nginx, and phpMyAdmin. Along the way, I worked with Docker networking, health checks, persistent volumes, reverse proxy configuration, Git, Docker Hub, image optimization, authentication, file processing, and frontend debugging. The interesting part was not just building the application. The interesting part was debugging it. I faced 18 real issues, including package compatibility problems, port conflicts, broken frontend files, browser caching, MySQL health-check failures, Docker Hub upload failures, IPv6 networking problems, OpenCV download failures, multi-stage Docker problems, health-check loops, and a 1.97 GB Docker image that I eventually reduced to 847 MB. This article documents the complete journey. 54 min read · [blogs.hritikranjan.in](https://blogs.hritikranjan.in/steganovault-with-docker?utm_source=hashnode&utm_medium=feed) [Yogeshwar Peela](https://hashnode.com/@exploitnotes) · [Sep 22](https://hashnode.com/posts/tryhackme-adventure-time-writeup/6ab27264ae7f6a9040b5cb59) ### [TryHackMe: Adventure Time Writeup](https://exploitnotes.hashnode.dev/tryhackme-adventure-time-writeup?utm_source=hashnode&utm_medium=feed) Adventure Time TryHackMe writeup covering FTP EXIF clues, web puzzles, Morse, AES, Vigenère, Spoon, steganography, and Exim CVE-2019-10149. 11 min read · [exploitnotes.hashnode.dev](https://exploitnotes.hashnode.dev/tryhackme-adventure-time-writeup?utm_source=hashnode&utm_medium=feed) [shreyas walake](https://hashnode.com/@shreewalake) · [Sep 12](https://hashnode.com/posts/that-whatsapp-image-might-not-be-just-an-image/6aa5d1b6aa075d7adf95f981) ### [That WhatsApp Image Might Not Be Just an Image](https://shreewalake.hashnode.dev/that-whatsapp-image-might-not-be-just-an-image?utm_source=hashnode&utm_medium=feed) And no, your antivirus probably didn't catch it. 13 min read · [shreewalake.hashnode.dev](https://shreewalake.hashnode.dev/that-whatsapp-image-might-not-be-just-an-image?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/that-whatsapp-image-might-not-be-just-an-image/6aa5d1b6aa075d7adf95f981) [Yogeshwar Peela](https://hashnode.com/@exploitnotes) · [Aug 15](https://hashnode.com/posts/tryhackme-different-ctf-writeup/6a7ffbe6f969e7468837dd43) ### [TryHackMe : Different CTF writeup](https://exploitnotes.hashnode.dev/tryhackme-different-ctf-writeup?utm_source=hashnode&utm_medium=feed) Complete TryHackMe Different CTF walkthrough covering steganography, FTP, WordPress, phpMyAdmin, webshells, sucrack, SUID, and root. 11 min read · [exploitnotes.hashnode.dev](https://exploitnotes.hashnode.dev/tryhackme-different-ctf-writeup?utm_source=hashnode&utm_medium=feed) [Yogeshwar Peela](https://hashnode.com/@exploitnotes) · [Jul 12](https://hashnode.com/posts/broncoctf-bundle-writeup/6a53cf7b8b3b4905c815a7d9) ### [BroncoCTF : Bundle Writeup](https://exploitnotes.hashnode.dev/broncoctf-bundle-writeup?utm_source=hashnode&utm_medium=feed) Solve Bundle by unpacking a Krita resource bundle, extracting PNG preset metadata, and recovering the hidden flag from a text brush definition. 5 min read · [exploitnotes.hashnode.dev](https://exploitnotes.hashnode.dev/broncoctf-bundle-writeup?utm_source=hashnode&utm_medium=feed) [Atharva Sen Barai](https://hashnode.com/@AtharvaSen) · [May 19](https://hashnode.com/posts/building-rookduel-avikal-from-chess-steganography-to-post-quantum-archival-security/6a0caaed8837277411821206) ### [Building RookDuel Avikal: From Chess Steganography to Post-Quantum Archival Security](https://blog.rookduel.tech/building-rookduel-avikal-from-chess-steganography-to-post-quantum-archival-security?utm_source=hashnode&utm_medium=feed) How a curiosity about hiding data inside chess became an open-source archive tool combining chess-rooted metadata, Devanagari keyphrases, TimeCapsule access and optional post-quantum protection. 14 min read · [blog.rookduel.tech](https://blog.rookduel.tech/building-rookduel-avikal-from-chess-steganography-to-post-quantum-archival-security?utm_source=hashnode&utm_medium=feed) [Vishesh Dutt Sharma](https://hashnode.com/@sttudv) · [Mar 22](https://hashnode.com/posts/what-an-image-is-allowed-to-hide/69c0123f45404394adaa5522) ### [What an Image Is Allowed to Hide](https://sttudv.hashnode.dev/what-an-image-is-allowed-to-hide?utm_source=hashnode&utm_medium=feed) Understanding how images conceal information through bit-level manipulation and pixel relationships 7 min read · [sttudv.hashnode.dev](https://sttudv.hashnode.dev/what-an-image-is-allowed-to-hide?utm_source=hashnode&utm_medium=feed)