Monument in Memoriam of Marian Rejewski, Jerzy Rózycki and Henryk Zygalski Unveiled in Poznan. - Marek Grajek (Cryptologia, 2008)

On Bad Randomness and Cloning of Contactless Payment and Building Smart Cards. - Nicolas T. Courtois; Daniel Hulme; Kumail Hussain; Jerzy A. Gawinecki; Marek Grajek (IEEE Symposium on Security and Privacy Workshops, 2013)

The Unreasonable Fundamental Incertitudes Behind Bitcoin Mining. - Nicolas T. Courtois; Marek Grajek; Rahul Naik (CoRR, 2013)

Optimizing SHA256 in Bitcoin Mining. - Nicolas T. Courtois; Marek Grajek; Rahul Naik (CSS, 2014)

An Inventory of Early Inter-Allied Enigma Cooperation. - Marek Grajek (HistoCrypt, 2018)

The Long Road Toward the Rejewski-Różycki-Zygalski Cipher Center in Poznań. - Marek Grajek (HC, 2018)

Systematic Construction of Nonlinear Product Attacks on Block Ciphers. - Nicolas T. Courtois; Matteo Abbondati; Hamy Ratoanina; Marek Grajek (ICISC, 2019)

Dawn of Mathematical Cryptology: Probabilists vs Algebraists; Algebraists & Probabilists? - Marek Grajek (HistoCrypt, 2020)

Documents of Polish-Soviet War of 1919-1920 Codebreaking. - Marek Grajek (HistoCrypt, 2021)

On Closed-Cycle Loops and Applicability of Nonlinear Product Attacks to DES. - Nicolas T. Courtois; Matteo Abbondati; Hamy Ratoanina; Marek Grajek (IACR Cryptol. ePrint Arch., 2021)

Enigma History and an Unexpected Treasure Trove. - Mariusz Borowiak; Marek Grajek (HistoCrypt, 2022)

On latin squares, invariant differentials, random permutations and historical Enigma rotors. - Nicolas T. Courtois; Marek Grajek (Cryptologia, 2022)

Mysteries of P.C. Cadix and its evacuation in 1942/43. - Marek Grajek (HistoCrypt, 2023)

Enigma Myth Deciphered - Codebreakers, Commanders and Politicians, Reprint Editiontion - Marek Grajek (Springer, 2025)