Combining Usability and Privacy Protection in Free-Access Public Cloud Storage Servers: Review of the Main Threats and Challenges. - Alejandro Sanchez-Gomez; Jesus Diaz; David Arroyo (CoRR, 2016)

Encrypted Cloud: A Software Solution for the Secure Use of Free-Access Cloud Storage Services. - Alejandro Sanchez-Gomez; Jesus Diaz; David Arroyo (SOCO-CISIS-ICEUTE, 2017)

Review of the Main Security Threats and Challenges in Free-Access Public Cloud Storage Servers. - Alejandro Sanchez-Gomez; Jesus Diaz; Luis Hernández Encinas; David Arroyo (Computer and Network Security Essentials, 2018)