Learn how to implement a classic substitution cipher in C! This step-by-step tutorial walks you through encoding and decoding ...

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 ...

Since 2013, there have been metaphorically for programmers to build annual rankings of the world’s most popular programming languages. The rankings have traditionally relied on public signals such as ...

Newer languages might soak up all the glory, but these die-hard languages have their place. Here are eight languages developers still use daily, and what they’re good for. The computer revolution has ...

In April 2023, Samsung discovered its engineers had leaked sensitive information to ChatGPT. But that was accidental. Now imagine if those code repositories had contained deliberately planted ...

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 ...

During the Cold War, numbers stations became prolific as high-security, low-risk spy tools to send secret messages to operatives in the field. However, as early as World War I, espionage agencies were ...