Why One Breached Account Can Put All Others at Risk
I’ve seen this happen too many times: one “small” breach turns into a week of password resets, fraud alerts, and panic. If one of your accounts is compromised, attackers don’t stop there. They pivot. They reset other passwords through your email. They exploit OAuth connections (“Sign in with Google/Facebook”). They try the same password on your bank, your cloud storage, even your streaming service. That’s why the real danger isn’t the first account — it’s the chain reaction that follows. Table of Contents Why one breach cascades across your digital life Credential stuffing, reuse, and token sync explained The pivot map: how attackers move from A → B → C The hidden weak links most people forget Personal vs work: different blast radiuses Containment playbook: first 24 hours Long-term hardening: passkeys, 2FA, aliases, vault hygiene Why one breach cascades across your digital life Most accounts are connected — directly or indir...