Password Security Explained: Why Length Beats Complexity (and How Entropy Works)

Most password advice is wrong — or at least, not based on what actually makes passwords hard to crack. Rules like "use a capital letter, a number, and a symbol" produce passwords like P@ssword1 , which is trivially cracked. Here's what actually matters, and why. What makes a password hard to crack? Attackers don't guess passwords the way humans do. They use two main approaches: Dictionary attacks : A list of millions of common passwords, words, phrases, and patterns is hashed and compared agains