Engineering Blog

Research & Insights

Deep dives into DDoS mitigation architecture, novel attack vectors, and engineering decisions behind CoreTech's protection stack.

The Four Walls of Rate Limiting: Why One Threshold Is Never Enough
Architecture 4 min

The Four Walls of Rate Limiting: Why One Threshold Is Never Enough

A single global rate limit is a blunt instrument that breaks legitimate traffic during an attack. Explore CoreEdge's 4-Tier Rate Limiting architecture, designed to progressively filter traffic from the global subnet level down to individual protocol behaviors.

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The Hidden Cost of Connection Memory: Tracking 5 Million Sessions in 32 Bytes
CoreEdge 4 min

The Hidden Cost of Connection Memory: Tracking 5 Million Sessions in 32 Bytes

During a volumetric state exhaustion attack, traditional firewalls don't fail because of bandwidth limits — they fail because they run out of memory. Discover how CoreEdge's compressed state tracking architecture monitors 5 million active connections using 68% less metadata than the industry standard.

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How We Protect 10,000 Networks at Once: The ISP Architecture
CoreEdge 4 min

How We Protect 10,000 Networks at Once: The ISP Architecture

Internet Service Providers and large data centers cannot rely on a single global security policy. CoreEdge provides true multi-tenant DDoS mitigation, applying thousands of independent, bespoke security postures simultaneously without performance degradation.

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Gaming Servers vs DDoS: CoreEdge's Zero Tolerance for Latency
Gaming 4 min

Gaming Servers vs DDoS: CoreEdge's Zero Tolerance for Latency

When milliseconds dictate the difference between an engaging player experience and a completely unplayable game, traditional rate-limiting DDoS mitigation fails. Learn how CoreEdge protects gaming infrastructure from massive UDP floods without introducing a single millisecond of latency to legitimate players.

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Updating Firewall Rules While Under Attack — Zero Downtime, Zero Dropped Connections
CoreEdge 5 min

Updating Firewall Rules While Under Attack — Zero Downtime, Zero Dropped Connections

Legacy security appliances require service restarts to apply policy updates — creating a dangerous vulnerability window precisely when security matters most. CoreEdge applies rule changes instantaneously, atomically, and without interrupting a single active connection, even during live multi-gigabit attacks.

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The Attack That Grows Slowly: Catching a DDoS Flood While It Is Still a Seed
CoreEdge 5 min

The Attack That Grows Slowly: Catching a DDoS Flood While It Is Still a Seed

The most dangerous DDoS attacks don't announce themselves. They escalate gradually, staying below detection thresholds until the damage is done. CoreEdge's Velocity Detection engine identifies and neutralizes these slow-burn campaigns in under three seconds — before they reach operational scale.

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The TCP Handshake Lie: How CoreEdge Exposes Spoofed Sessions in a Single Lookup
CoreEdge 4 min

The TCP Handshake Lie: How CoreEdge Exposes Spoofed Sessions in a Single Lookup

Attackers forge billions of TCP packets designed to look like legitimate established connections. CoreEdge's stateful verification engine exposes every forged session in nanoseconds — with a single, definitive lookup that leaves no spoofed packet a path forward.

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Digital Fingerprints of Destruction: How CoreEdge Identifies Attack Tools Before They Strike
CoreEdge 5 min

Digital Fingerprints of Destruction: How CoreEdge Identifies Attack Tools Before They Strike

Every DDoS tool leaves an invisible signature embedded in the packets it generates. Discover how CoreEdge's proprietary Behavioral Fingerprinting engine reads these digital fingerprints in real-time, assigning precise threat scores and neutralizing attacks before they fully form.

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How CoreEdge Stops 10 Million Packets Per Second — Before the OS Even Wakes Up
CoreEdge 5 min

How CoreEdge Stops 10 Million Packets Per Second — Before the OS Even Wakes Up

Inside CoreTech's patented stateful interception engine: how we eliminate terabit-scale DDoS assaults at the most fundamental layer of the network stack, with zero CPU overhead and zero disruption to legitimate traffic.

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Zero False Positives: Inside CoreTech’s 3-Tier Machine Learning Engine for L7 Threats
AI 4 min

Zero False Positives: Inside CoreTech’s 3-Tier Machine Learning Engine for L7 Threats

Discover how CoreDetection™ abandons archaic static thresholds for an autonomous, 3-Tier Neural Network that utilizes deep Machine Learning to eliminate false positives and surgically isolate polymorphic Layer 7 botnets.

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The Evolution of Application-Layer Threats: Defeating Polymorphic L7 Botnets
L7 Threats 3 min

The Evolution of Application-Layer Threats: Defeating Polymorphic L7 Botnets

Explore the escalating complexity of Application Layer attacks and how CoreDetection's AI-driven analytics provide the essential intelligence to neutralize stealthy, polymorphic botnets with zero false positives.

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Architecting Global Resilience: Anycast and BGP in Modern DDoS Mitigation
Architecture 4 min

Architecting Global Resilience: Anycast and BGP in Modern DDoS Mitigation

Discover how intelligent BGP routing and global Anycast networks form the backbone of next-generation, terabit-scale DDoS mitigation, ensuring zero-latency protection and absolute infrastructure resilience.

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How to Create a DDoS Response Plan: A Step-by-Step Guide
DDoS Response 8 min

How to Create a DDoS Response Plan: A Step-by-Step Guide

When a DDoS attack hits, every second of confusion costs money. A documented response plan eliminates confusion. Here's how to build one that actually works — with templates, roles, and real procedures.

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Layer 3/4 vs Layer 7 DDoS Attacks: What's the Difference and How to Mitigate Both
Layer 3 9 min

Layer 3/4 vs Layer 7 DDoS Attacks: What's the Difference and How to Mitigate Both

DDoS attacks target different layers of the network stack. Layer 3/4 attacks overwhelm bandwidth and infrastructure. Layer 7 attacks exhaust application resources. Learn how they differ and why you need different defenses for each.

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What Is eBPF/XDP and Why It's the Future of DDoS Mitigation
eBPF 9 min

What Is eBPF/XDP and Why It's the Future of DDoS Mitigation

eBPF and XDP are revolutionizing how networks handle DDoS attacks — processing packets at the network card before the kernel even sees them. Learn why this technology outperforms every legacy approach.

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What Is GeoIP Blocking and When Should You Use It for DDoS Mitigation?
GeoIP 7 min

What Is GeoIP Blocking and When Should You Use It for DDoS Mitigation?

GeoIP blocking lets you filter network traffic by country of origin — a powerful tool for reducing DDoS attack surface. Learn when it makes sense, when it doesn't, and how to implement it without blocking your real users.

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What Is Rate Limiting and How Does It Stop DDoS Attacks?
Rate Limiting 8 min

What Is Rate Limiting and How Does It Stop DDoS Attacks?

Rate limiting is one of the most effective DDoS mitigation techniques — but only when implemented correctly. Learn how it works, the different types, and why per-source rate limiting changes everything.

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DNS Amplification Attacks Explained: How a 60-Byte Query Becomes a 4,000-Byte Weapon
DNS Amplification 8 min

DNS Amplification Attacks Explained: How a 60-Byte Query Becomes a 4,000-Byte Weapon

DNS amplification is one of the most devastating DDoS techniques ever devised — turning open DNS resolvers into unwitting attack cannons. Learn how it works, why it's so effective, and how to defend against it.

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What Is BGP Blackholing and Why It's Not Enough to Stop DDoS Attacks
BGP 11 min

What Is BGP Blackholing and Why It's Not Enough to Stop DDoS Attacks

BGP blackholing is one of the oldest DDoS defenses in networking — but it works by sacrificing your service to save your network. Learn when blackholing makes sense, when it doesn't, and what the alternatives look like.

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DDoS Attack Trends in 2026: What Every Business Needs to Know
DDoS Trends 8 min

DDoS Attack Trends in 2026: What Every Business Needs to Know

The DDoS threat landscape is evolving fast. From AI-powered botnets to terabit-scale attacks, here are the biggest trends shaping 2026 — and what you can do to stay protected.

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Self-Service DDoS Mitigation: Managing Your Firewall Rules Without Opening a Ticket
Firewall 12 min

Self-Service DDoS Mitigation: Managing Your Firewall Rules Without Opening a Ticket

Most DDoS providers force you to wait hours for a support engineer to adjust your mitigation. CoreTech puts the firewall controls directly in your hands — with granular rule creation, pre-built templates, and one-click mitigation bundles.

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What Is a SYN Flood Attack and How to Stop It
SYN Flood 13 min

What Is a SYN Flood Attack and How to Stop It

SYN floods remain the most common TCP-based DDoS attack — and the hardest to filter without collateral damage. Learn exactly how they work, why traditional defenses fail, and what modern mitigation looks like.

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CoreDetection™: Smart DDoS Detection That Never Blocks Your Real Users
CoreDetection 5 min

CoreDetection™: Smart DDoS Detection That Never Blocks Your Real Users

Learn how CoreDetection™ uses intelligent behavioral analysis to detect DDoS attacks instantly — while ensuring zero false positives and no disruption to legitimate traffic.

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UDP vs TCP Flood Attacks: What's the Difference and How to Stop Both
UDP Flood 8 min

UDP vs TCP Flood Attacks: What's the Difference and How to Stop Both

UDP floods and TCP floods are the two most common DDoS attack types — but they work very differently. Learn how each one threatens your network and how modern mitigation stops them.

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CoreEdge™: Why Software-Defined Mitigation Outperforms Legacy DDoS Appliances
CoreEdge 4 min

CoreEdge™: Why Software-Defined Mitigation Outperforms Legacy DDoS Appliances

Discover why CoreEdge™ delivers faster, more efficient DDoS mitigation than traditional hardware appliances — with zero added latency and full SLA guarantees.

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The CoreTech Client Portal: Complete Visibility and Control Over Your DDoS Mitigation
Client Portal 4 min

The CoreTech Client Portal: Complete Visibility and Control Over Your DDoS Mitigation

Explore everything the CoreTech Client Portal offers — real-time attack dashboards, firewall management, traffic analytics, API access, webhook notifications, and 24/7 SOC support.

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Three Ways to Connect: BGP-Based DDoS Mitigation for Every Network
BGP 4 min

Three Ways to Connect: BGP-Based DDoS Mitigation for Every Network

CoreTech offers three BGP connection methods — Cross-Connect, GRE Tunnel, and IX Peering. Learn which one fits your network architecture and how to get protected fast.

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