Guides, tips and explanations
Your password just leaked. The next 30 minutes are your most powerful window to contain the damage. Here's a step-by-step rapid response plan: verify the breach, rotate every reus…
Read more →MD5 and SHA-1 are broken — practically exploitable, not just theoretically weak. This guide surveys common hash functions, explains exactly what "broken" means in each case, and g…
Read more →Using the locked-mailbox analogy to demystify RSA-style asymmetric encryption, digital signatures, hashing, and the chain of trust that makes HTTPS work — no math degree required.
Read more →It often takes a scare to get serious about two-factor authentication. A reused password turns up in a credential dump from some forgotten forum breach, an…
Read more →Bcrypt has been called outdated. It keeps showing up in production anyway. This Q&A breaks down the adaptive cost factor, built-in salting, and why its deliberate slowness still g…
Read more →From forced 90-day rotations to the myth that symbols make passwords strong — a lot of the advice we've followed for years has been quietly proven wrong. Here's what NIST actually…
Read more →SMS 2FA, authenticator apps, and hardware keys each protect you differently — against different attackers, in different ways. Here's an honest comparison of all three on security …
Read more →Hashing your passwords isn't enough. This deep-dive breaks down what salting and peppering actually do at a technical level, how they defeat rainbow tables and offline attacks, an…
Read more →Adobe, RockYou, LinkedIn — real breaches with millions of victims, all rooted in the same mistake: not hashing passwords properly. Here's what went wrong and how bcrypt and Argon2…
Read more →AES encrypts your bank transfers, messages, and files every day without fanfare. This plain-language guide breaks down symmetric keys, block ciphers, GCM mode, and why AES-256 has…
Read more →TOTP two-factor codes look like magic — your phone and the server generate the same six digits without talking to each other. This deep-dive unpacks RFC 6238 step by step: the sha…
Read more →Hashing and encryption get treated like interchangeable words in security discussions — they aren't. One is reversible, one isn't, and choosing wrong has caused some of the bigges…
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