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% 19345 5 Isis 7 28 March 2022
pas_valide Steganomobile 11% 38416 10 Ryscrow 2 29 April 2011
pas_valide Twitter Secret Messages 8% 27449 10 Kira_ 3 21 December 2016
pas_valide TXT - George and Alfred 8% 27980 10 g0uZ 1 20 December 2014
pas_valide WAV - Noise analysis 6% 18471 10 Hackira 5 7 October 2006
pas_valide Dot and next line 8% 26672 10 SQalp 1 16 June 2013
pas_valide Poem from Space 2% 6499 15 Cryptanalyse 3 15 July 2020
pas_valide Yellow dots 3% 8527 15 LetMeR00t 5 29 September 2019
pas_valide EXIF - Thumbnail 4% 12724 20 whoaim 7 12 August 2015
pas_valide Mimic - Dummy sight 1% 1233 20 extiop , AnthoLaMalice 2 22 November 2021
pas_valide WAV - Spectral analysis 4% 12391 20 stickmen 7 2 October 2011
pas_valide PDF - Embedded 2% 4980 25 eilco 7 23 July 2017
pas_valide APNG - Just A PNG 1% 3219 25 extiop , AnthoLaMalice 1 22 November 2021
pas_valide ELF x64 - Duality 1% 704 25 extiop , AnthoLaMalice 1 22 November 2021
pas_valide Crypt-art 3% 9323 25 m31z0nyx 2 11 December 2011
pas_valide Genius ID 1% 406 30 LetMeR00t 1 10 May 2023
pas_valide Kitty spy 1% 1534 30 LetMeR00t 2 9 July 2018
pas_valide PNG - Least Significant Bit 1% 2506 30 koma 2 21 March 2012
pas_valide PNG - Pixel Indicator Technique 1% 2041 30 LetMeR00t 1 7 August 2017
pas_valide PNG - Pixel Value Differencing 1% 1770 30 LetMeR00t 1 7 November 2017
pas_valide Angecryption 1% 767 35 pickle 1 17 September 2017
pas_valide Base Jumper 1% 1891 35 pickle 3 3 March 2018
pas_valide Hide and seek 1% 508 40 swap89 1 22 September 2019

Challenge Results Challenge Results

Pseudo Challenge Lang Date
almerions Stéganographie  TXT - George et Alfred fr 31 March 2025 at 23:12
almerions Steganography  Twitter Secret Messages en 31 March 2025 at 23:08
Lia Stéganographie  Poem from Space fr 31 March 2025 at 23:08
almerions Steganography  Steganomobile en 31 March 2025 at 23:07
katus Stéganographie  TXT - George et Alfred fr 31 March 2025 at 23:07
beauby Stéganographie  WAV - Analyse spectrale fr 31 March 2025 at 23:03
katus Steganography  Twitter Secret Messages en 31 March 2025 at 22:55
pparker42 Stéganographie  Point à la ligne fr 31 March 2025 at 22:34
Lyvant Stéganographie  EXIF - Miniature fr 31 March 2025 at 22:33
pparker42 Stéganographie  EXIF - Metadata fr 31 March 2025 at 22:30