Fail2Ban watches your logs, remembers who's been attacking, and slams the door automatically. Here's how this bouncer with a memory actually works—and where it falls short.
Two opposite philosophies of trust: allowlisting assumes danger until proven safe, blocklisting assumes safety until proven dangerous. Understanding when to use each determines whether your security helps or hinders.
Every unpatched system is a countdown. Attackers know about the same vulnerabilities you do—the only question is who moves first.
Every permission you grant is a bet that nothing will go wrong. Least privilege is about making fewer bets—and losing less when something inevitably does.
Rate limiting weaponizes time against abuse. By restricting how many requests a client can make, it forces attackers to experience time like humans do—making brute force attacks impractically slow.
Audits verify you built what you promised. Pentests prove whether it actually stops attackers. Understanding both is how organizations find vulnerabilities before someone else does.
Every security incident becomes a question: what happened? Logs are the only way to answer. They let you rewind time, trace attacker movements, and understand exactly how systems were compromised.
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