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Attack analysis, mitigation guides, and threat intelligence from our security team.
A DoS attack comes from one source; a DDoS from thousands at once. Here's what actually separates them, why DDoS is far harder to stop, and how each is defended.
Akarguard Team
Security Engineering
From the 1.35 Tbps GitHub attack to record-breaking HTTP/2 floods, here are the largest DDoS attacks ever recorded, how they worked, and the lessons for defenders.
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A WAF filters malicious HTTP requests like SQL injection and XSS before they reach your app. Here's how it works, what it can't do, and how it pairs with DDoS protection.
Akarguard Team
A reverse proxy sits in front of your server, handling every request before your origin sees it. Here's how it works and why it's the foundation of modern DDoS protection.
Akarguard Team
Downtime, lost sales, emergency engineering, churn and reputation — a DDoS attack costs far more than the bandwidth. Here's how to estimate your real exposure.
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Your site is down and you think it's a DDoS. Here is exactly what to do in the first ten minutes, how to confirm it, how to blunt the attack, and how to make sure it can't take you offline again.
Akarguard Team
Game servers are among the most attacked targets on the internet, and Minecraft servers get hit constantly. Here is why, and how to protect yours without ruining latency for legitimate players.
Akarguard Team
Launching a DDoS attack is a criminal offence in most of the world, including paying a booter service to do it for you. Here is what the law actually says, and why 'it was just a stress test' is not a defence.
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Cloudflare is the default, but if you're here you've probably hit its wall: price jumps, no support, no control. Here's an honest comparison — and why a managed, EU-based provider like Akarguard fits better for most teams.
Akarguard Team
DNS-based reverse-proxy services protect a website by sitting in front of it after a DNS change. Here is how the model works, what the free options really give you, and the questions to ask before you route your traffic through one.
Akarguard Team
Layer 7 is the application layer of the OSI model, where HTTP, APIs and your users live. Here is what it covers, how it differs from Layer 4, and what Layer 7 firewalls, load balancers and routing actually do.
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You cannot block your way out of an application-layer attack with an IP firewall. Here is the layered set of controls that actually mitigates Layer 7 DDoS, and the order to apply them.
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The only way to know if your Layer 7 defences hold is to test them, on infrastructure you own, with permission. Here is how to run a safe, useful application-layer load test.
Akarguard Team
Memcached-based reflection attacks can amplify traffic by a factor of 51,000x. We break down exactly how attackers exploit these servers, why this is a network-layer problem, and where an L7 reverse proxy like Akarguard does and does not help.
Akarguard Team
From rate limiting and WAF rules to DNS-based scrubbing and incident runbooks — a practical checklist you can implement this week to harden your infrastructure.
Akarguard Team
A plain-language read on where DDoS is heading — application-layer floods overtaking volumetric ones, shorter and smarter attacks, and cheap attack-for-hire. For our own measured numbers, we publish live data separately.
Akarguard Team
You don't need to touch your servers, change your IP addresses, or configure BGP sessions. Here's how a single DNS update puts Akarguard's reverse-proxy edge between attackers and your infrastructure.
Akarguard Team
Layer 7 DDoS attacks do not flood your bandwidth. They send valid HTTP requests that exhaust your application logic. This is the complete guide to how L7 attacks work, the main attack types and the signal that gives each away, and how to stop them.
Akarguard Team
DDoS mitigation involves logging IP addresses — which are personal data under GDPR. Here's how Akarguard keeps you compliant without compromising your security.
Akarguard Team
A SYN flood exhausts your server's connection state table in seconds — no bandwidth required. We break down the mechanics and the mitigations that actually work.
Akarguard Team
UDP requires no handshake, no state, no authentication. That makes it the preferred tool for volumetric attackers aiming to saturate bandwidth.
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Open DNS resolvers can amplify traffic 70x. Millions are still reachable on the public internet — making DNS one of the most exploited DDoS vectors today.
Akarguard Team
NTP's MONLIST command was designed for diagnostics. It became one of the most powerful DDoS amplifiers ever discovered — capable of 556x amplification.
Akarguard Team
CVE-2023-44487 allowed attackers to generate request rates of 398 million requests per second using a fraction of the connections a normal HTTP/2 client would use.
Akarguard Team
Mirai turned 600,000 unsecured IoT devices into a DDoS army. The source code was released publicly — and attackers have been building on it ever since.
Akarguard Team
Gaming servers are attacked more than any other sector. Competitive motives, personal grudges, and DDoS-for-hire services make every server a target.
Akarguard Team
E-commerce sites face DDoS attacks most frequently during peak sales periods — when the cost of downtime is highest. Here's how to stay up when attackers strike.
Akarguard Team
Banks and fintechs face DDoS attacks from state actors, cybercrime groups, and activists. Regulators in the EU and US now mandate specific resilience requirements.
Akarguard Team
A DDoS scrubbing proxy is useless if attackers know your real server IP. Here are every place your IP can leak — and how to seal them.
Akarguard Team
Rate limiting is one of the most powerful and most misused DDoS mitigation tools. Applied correctly, it blocks floods. Applied incorrectly, it blocks your customers.
Akarguard Team
Both approaches filter bots from real users — but they work differently, fail differently, and impose different friction. Here's how to choose.
Akarguard Team
A WAF filters malicious requests. A DDoS mitigation system absorbs massive traffic volumes. They solve adjacent problems — and work best as layers.
Akarguard Team
CDNs cache content and reduce origin load. They provide incidental DDoS resilience — but they're not built to absorb targeted attacks. Here's the difference.
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The first hour of a DDoS attack is the most chaotic — and the most consequential. A documented runbook means your team acts, not panics.
Akarguard Team
On-premise scrubbing hardware gives you control. Cloud-based protection gives you scale. For most organizations, the math is clear — but the tradeoffs are worth understanding.
Akarguard Team
Billions of IoT devices run embedded Linux with default credentials, no auto-update, and permanent internet exposure. They're the raw material of modern DDoS botnets.
Akarguard Team
DDoS-for-extortion campaigns follow a predictable playbook: a warning email, a demonstration attack, a Bitcoin demand. Here's how to respond — and why paying never works.
Akarguard Team
If your DNS goes down, your entire infrastructure is unreachable — regardless of how well-protected your servers are. DNS is the forgotten attack surface.
Akarguard Team
Slowloris opens thousands of connections to a server and keeps them open by sending partial HTTP headers indefinitely — tying up all available connection slots.
Akarguard Team
DDoS attacks fall into three categories that exhaust three different resources. Understanding which type you're facing determines how you should respond.
Akarguard Team
Black Friday isn't just your biggest sales day — it's the day attackers know the cost of downtime is highest. Preparation before the day is the only effective defense.
Akarguard Team
Modern attacks combine volumetric floods, protocol exploits, and application-layer targeting simultaneously. Each vector requires a different mitigation technique.
Akarguard Team
Hospitals face a unique DDoS threat: an attack that takes down patient portals or clinical systems is not just a technical incident — it's a potential life-safety event.
Akarguard Team
For $10, anyone can rent 300Gbps of DDoS capacity for an hour. The market for DDoS-for-hire has grown into a mature industry — and law enforcement can barely keep up.
Akarguard Team
Reflection attacks use third-party servers as unwitting amplifiers. Understanding the mechanics — and the mitigation — across all major protocols.
Akarguard Team
Zero trust eliminates implicit trust in network location. Applied consistently, it dramatically reduces the attack surface available to DDoS attackers.
Akarguard Team
Attributing a DDoS attack to a specific threat actor is technically difficult and often impossible. But for law enforcement and insurance purposes, it still matters.
Akarguard Team
A 99.99% uptime SLA allows 52 minutes of downtime per year. DDoS attacks routinely cause hours of outage. Here's how to make your SLA real.
Akarguard Team
APIs are high-value DDoS targets — they're computationally expensive, often publicly documented, and frequently under-protected. Here's how to harden them.
Akarguard Team
A postmortem isn't about blame — it's about systematic improvement. Here's a structured template for extracting maximum learning from a DDoS incident.
Akarguard Team
Most teams lose the first twenty minutes of an attack arguing about whether it is an attack at all. Here are the signals that separate a traffic spike from a flood, and the order of actions that actually shortens an incident.
Akarguard Team
WordPress is the most attacked CMS on the internet, and most of the advice about defending it is plugin marketing. A practical look at which layers matter, in the order they matter.
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The nginx defaults are tuned for a friendly internet. A walk through the directives that matter when the traffic is hostile — connection limits, request limits, timeouts, and the buffers that quietly decide whether you survive.
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Three delivery models, three sets of trade-offs. What changes for your DNS, your TLS, your latency, and your logs depending on how protection is wired in.
Akarguard Team
Every vendor publishes a terabit figure and nobody has ever been saved by one. The questions that actually predict how a provider behaves at three in the morning.
Akarguard Team
A handshake costs the server far more than it costs the client. Attackers know the ratio, and a few thousand connections per second can exhaust a machine that shrugs off much larger request floods.
Akarguard Team
Instead of flooding one address, the traffic is spread thinly across an entire network range. No single target looks attacked, the aggregate saturates the uplink, and most detection never fires.
Akarguard Team
Attackers replay leaked username and password pairs against your login form at machine speed. Long before any account is taken over, the load itself can take the site down — and the two problems need different fixes.
Akarguard Team
You cannot trust a defence you have never exercised. A practical guide to load testing your own infrastructure — what to test, what is off limits, and what a useful test actually measures.
Akarguard Team
The revenue you lose during an outage is the visible cost. The slower, longer cost is what search crawlers recorded while your site was unreachable — and how your protection settings affect whether they can index you at all.
Akarguard Team
Scrapers, price crawlers, and headless browsers behave nothing like a flood, but they use the same infrastructure and often the same countermeasures. Where the two problems separate, and why the distinction changes what you should do.
Akarguard Team
Every protection mode trades visitor friction against filtering strength. A practical guide to which one belongs on a marketing site, an API, a checkout, and a login — and when to change them.
Akarguard Team
Blocking by address works because addresses are scarce. In IPv6 they are not, and a single attacker may hold more addresses than the entire IPv4 internet. What that breaks, and what replaces it.
Akarguard Team
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