Steganography Steganography

The art of hiding information in a document.

challenges 23 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty ↓↑  Difficulty Author Note  Notation Solution Date
pas_valide EXIF - Metadata 6% 19888 5 Isis 7 28 March 2022
pas_valide Steganomobile 11% 38862 10 Ryscrow 2 29 April 2011
pas_valide Twitter Secret Messages 8% 27768 10 Kira_ 3 21 December 2016
pas_valide TXT - George and Alfred 8% 28289 10 g0uZ 1 20 December 2014
pas_valide WAV - Noise analysis 6% 18638 10 Hackira 5 7 October 2006
pas_valide Dot and next line 8% 27008 10 SQalp 1 16 June 2013
pas_valide Poem from Space 2% 6658 15 Cryptanalyse 3 15 July 2020
pas_valide Yellow dots 3% 8654 15 LetMeR00t 5 29 September 2019
pas_valide Mimic - Dummy sight 1% 1253 20 extiop , AnthoLaMalice 2 22 November 2021
pas_valide Kitty spy 1% 1560 30 LetMeR00t 2 9 July 2018
pas_valide Base Jumper 1% 1927 35 pickle 3 3 March 2018
pas_valide Angecryption 1% 776 35 pickle 1 17 September 2017
pas_valide PNG - Pixel Value Differencing 1% 1800 30 LetMeR00t 1 7 November 2017
pas_valide PNG - Pixel Indicator Technique 1% 2080 30 LetMeR00t 1 7 August 2017
pas_valide PNG - Least Significant Bit 1% 2527 30 koma 2 21 March 2012
pas_valide APNG - Just A PNG 1% 3305 25 extiop , AnthoLaMalice 1 22 November 2021
pas_valide Genius ID 1% 424 30 LetMeR00t 1 10 May 2023
pas_valide PDF - Embedded 2% 5101 25 eilco 7 23 July 2017
pas_valide ELF x64 - Duality 1% 712 25 extiop , AnthoLaMalice 1 22 November 2021
pas_valide Crypt-art 3% 9455 25 m31z0nyx 2 11 December 2011
pas_valide WAV - Spectral analysis 4% 12549 20 stickmen 7 2 October 2011
pas_valide EXIF - Thumbnail 4% 12890 20 whoaim 7 12 August 2015
pas_valide Hide and seek 1% 515 40 swap89 1 22 September 2019

Challenge Results Challenge Results

Pseudo Challenge Lang Date
Z6ugl6u Stéganographie  PNG - Pixel Value Differencing fr 3 May 2025 at 15:32
Alexandre Maréchal Stéganographie  Points jaunes fr 3 May 2025 at 14:37
Paresse1 Stéganographie  EXIF - Metadata fr 3 May 2025 at 14:33
Juicy Stéganographie  PDF - Embedded fr 3 May 2025 at 14:03
bylal Steganography  PDF - Embedded en 3 May 2025 at 13:51
Gu3n0 Stéganographie  PDF - Embedded fr 3 May 2025 at 13:10
Alexandre Maréchal Stéganographie  Poem from Space fr 3 May 2025 at 12:40
iupjipegz Stéganographie  Crypt-art fr 3 May 2025 at 12:29
iupjipegz Stéganographie  Point à la ligne fr 3 May 2025 at 12:26
KOFFI MOÏSE EMMANUEL BECKLOMISSA Stéganographie  EXIF - Metadata fr 3 May 2025 at 12:25