After the breach, reuse . Knowing reuse is dangerous does not make it disappear. The real challenge: cleaning up dozens of accounts without breaking everything. You have read the numbers and you know how credential stuffing works: a password stolen somewhere is replayed elsewhere. What remains is the practical question almost no article answers: where do you start when you have 60, 100, 150 accounts? Rather than repeating why reuse is dangerous, this article focuses on what comes next: why we keep doing it, why "small variations" do not protect you, and a realistic order of priorities for breaking the habit. 65% of respondents reuse the same password across several accounts (Google/Harris Poll) 15 minimum characters recommended by NIST when the password is the only factor (SP 800-63B rev. 4) 0 critical accounts that should share a password with another service We reuse because we are human, not because we are careless According to a Google/Harris Poll survey, 52% of people reuse a password across multiple (but not all) accounts, and 13% across all of them — 65% in total . Reuse is a rational trade-off against an unrealistic constraint: remembering dozens of distinct secrets. Blaming people does not help. What matters is shrinking the blast radius: one account, one password, so every leak stays an isolated incident. "Small variations" are not unique passwords Changing a digit or an exclamation mark at the end of a password feels like real work. But an attacker who obtains "Blue-Cat42!" on one site will naturally try "Blue-Cat43!" elsewhere. The variation logic is predictable, so it is exploitable. For the same reason, current standards no longer rely on composition rules. NIST (SP 800-63B) asks services to compare chosen passwords against lists of already compromised values and favors length over apparent complexity. Simple rule If two passwords look alike, they count as one. A unique password has no visible link to any other. Start with the accounts that unlock the others No need to change everything in one evening. Handle first the accounts whose compromise leads to others: your primary email, because it resets almost every password. Money comes next, then the rest. A five-step plan A local vault like QubKey is designed for this moment: your new credentials stay encrypted in the app on your computer (Windows or macOS), with optional sync between devices in beta. Free during the beta. List your critical accounts : primary email, banking, payment, admin, cloud. Check exposure of your addresses on Have I Been Pwned to know which accounts to handle first. Pick a vault to store your new passwords: you only need to remember one master secret. Replace them with long, unique passwords , one account at a time, starting with email. Sort the rest as you go : at each login, replace the old password and store the new one. One account, one password. Try QubKey, the local password manager for Windows and macOS. Free during the beta. This article is for informational purposes. No software is unbreakable: a password manager greatly reduces the risk of reuse without eliminating every risk (phishing, malware on your device). Statistics cited come from the public sources listed above.