Security | Threat Detection | Cyberattacks | DevSecOps | Compliance

Defending the Internet: how Cloudflare blocked a monumental 7.3 Tbps DDoS attack

In mid-May 2025, Cloudflare blocked the largest DDoS attack ever recorded: a staggering 7.3 terabits per second (Tbps). This comes shortly after the publication of our DDoS threat report for 2025 Q1 on April 27, 2025, where we highlighted attacks reaching 6.5 Tbps and 4.8 billion packets per second (pps). The 7.3 Tbps attack is 12% larger than our previous record and 1 Tbps greater than a recent attack reported by cyber security reporter Brian Krebs at KrebsOnSecurity.

Cloudflare's Log Explorer equips businesses with native security forensics for faster insights with fewer tools

Now fully integrated across Cloudflare's network, Log Explorer makes it even easier for businesses to automatically see critical security insights and mitigate risk-no configuration needed.

Security isn't a department.

Security isn’t a department. It’s a shared responsibility. To move from reactive to preventive, every product team needs embedded cyber expertise. Ange Ferrari, SVP and CISO at Metro AG, explains how decentralizing security enables scale and forces organizations to treat security as everyone's job, not just IT's. If you want to "shift left" for real, this episode is your playbook.

theNET's Trending Stories: Security for an AI-powered, quantum-enhanced era

Tech leaders are racing to adopt today’s AI tools and envisioning ways to capitalize on tomorrow’s quantum computers. But cybercriminals are a few steps ahead. This month, theNET examines ways to make the most of AI agents while augmenting security with AI-enhanced solutions and safeguarding data with post-quantum cryptography.

Security Signal Podcast: The Perimeter Problem

The Perimeter Problem The traditional corporate perimeter, once a simple fortress, is no longer a reliable defense. With vulnerabilities changing rapidly in a world of cloud computing and remote work, relying on outdated security models is no longer a viable strategy. This massive shift demands a new approach centered on identity, leaving many organizations wondering how to adapt to the "perimeter problem".

Protect AI-power apps with Cloudflare Firewall for AI

As organizations refactor applications and adopt AI and Large Language Models (LLMs) to power new applications and enhance existing services, a new class of security vulnerabilities has emerged. Traditional web application firewalls (WAFs) are only partially equipped to defend against threats unique to AI. In this video, we provide an overview of Cloudflare's Firewall for AI product, how it works, and how you can use it to protect AI models and safeguard user interactions with those models.

Cloudflare named a Strong Performer in Email Security by Forrester

Today, we are excited to announce that Forrester has recognized Cloudflare Email Security as a Strong Performer and among the top three providers in the ‘current offering’ category in “The Forrester Wave: Email, Messaging, And Collaboration Security Solutions, Q2 2025” report. Get a complimentary copy of the report here. According to Forrester.

Verifying Bots and Agents with Cryptography in the Age of AI

In this episode, host João Tomé is joined in Cloudflare’s Lisbon office by our Senior Research Engineer Thibault Meunier to explore a new proposal that could reshape how bots interact with the web in the age of AI. Timestamps: We go into Cloudflare’s proposal of using cryptographic signatures for bots, enabling websites to verify their identity. Why is this important? As AI systems rely increasingly on online content, this standard could help build a better relationship between content creators and AI platforms.

Performance measurements... and the people who love them

Principal Engineer Kevin Guthrie walks us through his blog post, “Performance measurements… and the people who love them,” which explores how teams can better measure, visualize, and communicate web performance—beyond just raw metrics. Part of the “This Week in NET” show/podcast.