Introduction to ciphers and substitution. Alice and Bob and Carl and Julius: terminology and Caesar Cipher ; The key to the matter: generalizing the Caesar Cipher ; Multiplicative ciphers ; Affine ...

The United States House of Representatives has voted forward a bill that would end the restrictive Caesar Act sanctions on Syria, originally imposed during the rule of former leader Bashar al-Assad.

When the IBM PC was new, I served as the president of the San Francisco PC User Group for three years. That’s how I met PCMag’s editorial team, who brought me on board in 1986. In the years since that ...

Toby Walters is a financial writer, investor, and lifelong learner. He has a passion for analyzing economic and financial data and sharing it with others. Credit card encryption helps prevent theft of ...