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Guides to DDoS protection and CDNs.
Plain-English explanations of the attacks that take websites down and the infrastructure that keeps them up. No jargon, no sales pitch.
What is a DDoS attack?
A distributed denial-of-service (DDoS) attack overwhelms a website or API with traffic from many machines at once, until real visitors can no longer get through.
What is a Layer 7 DDoS attack?
Layer 7 (application-layer) DDoS attacks imitate legitimate visitors instead of flooding the network — which is exactly why traditional defenses miss them.
How to stop a DDoS attack on your website.
A practical, ordered checklist for the moment your site goes down — and for making sure the next attack never reaches it.
What is DDoS mitigation?
DDoS mitigation is the process of spotting attack traffic and dropping it before it reaches the resource an attacker is trying to exhaust — bandwidth, connections, or your application itself.
WAF vs DDoS protection: what is the difference?
Both sit in front of your website, both block traffic, and vendors sell them side by side — which is exactly why teams buy one and assume they are covered for the other. They answer two different questions.
Ransom DDoS: what to do about an extortion email
A ransom DDoS (RDoS) attack starts with an email, not an outage: pay cryptocurrency before a deadline, or your site goes down. Most of these threats are bluffs — but the ones that are not give you hours, not days.
How to protect an API from DDoS attacks.
Browser challenges are useless against machine traffic — and fatal to it. Protecting an API means identifying clients and bounding what each one can cost you.
How to protect WordPress from DDoS attacks.
A WordPress page costs you a database round trip and a PHP worker. It costs the attacker one HTTP request. That asymmetry — not bandwidth — is what takes WordPress sites offline.
How to protect an online store from DDoS attacks.
Your catalog can be cached. Your checkout cannot. That is the whole problem: the pages that make you money are the pages an attacker can force your servers to compute, one expensive request at a time.
How much does a DDoS attack cost?
Lost sales are the line everyone reaches for first, and for most businesses it is not the biggest one. Here is how to work out your own number instead of borrowing someone else’s.
How to hide your origin IP address.
DDoS mitigation only works if your server cannot be reached any other way. An exposed origin IP is the most common reason protection is in place and the site still goes down.
How to test your DDoS protection.
Nobody discovers their mitigation was misconfigured at a convenient hour. Here is how to verify every claim your protection makes — without renting an attack, and without taking your own site down.
What is a CDN?
A content delivery network (CDN) stores copies of your website on servers around the world, so every visitor is served from the location nearest to them.