Interesting security topics including the following.

• physical security
• information security
• eternal security

Hint: My password is the last 8 digits of pi (π). Aside: I had to add "Pi!" at the end to satisfy IT's password strength requirement.

• 2021-08-30: Eternal security
• Codes: Transposition ciphers
• Albam : An ancient cipher code
• Steganography: hidden messages
• Shibboleth: how something is said
• 2021-12-17: Steganography: hidden messages
• Codes and ciphers: Steganography
• Hebrew and Greek gematria
• Jeremiah: 25, 51 An ancient cipher code called atbash (2019-04-13)
• Generations from Adam to Noah (2019-04-30) (hidden meanings)