1. Facebook stored hundreds of millions of passwords in plain text. https://www.theverge.com/2019/3/21/18275837/facebook-plain-text-password-storage-hundreds-millions-users
2. Google stored some passwords in plain text for fourteen years. https://www.theverge.com/2019/5/21/18634842/google-passwords-plain-text-g-suite-fourteen-years
3. Lecture Notes in Computer Science;M Abdalla,2020
4. Lecture Notes in Computer Science;M Abdalla,2008
5. Lecture Notes in Computer Science;M Abdalla,2005