Attila Györffy
Product Engineer

When One Company Breaks, Half the Internet Goes with It

Cloudflare’s security systems malfunctioned, blocking legitimate users alongside malicious traffic, exposing how Internet infrastructure depends on a handful of companies.

You may have noticed that a large part of the Internet broke down recently, and many websites simply refused to load. The name Cloudflare might ring a bell — it shows up on more and more sites these days. Moments like this usually trigger a wave of conspiracy theories online, and even the experts quoted in the news often fail to explain clearly what actually happened. So here is a short, human-readable summary.

Think of Cloudflare as a security guard standing in front of many websites. Its job is to keep out unwanted or “suspicious” visitors so the sites don’t collapse under too much traffic. It acts as a shield in front of big services like Twitter (X), ChatGPT, Spotify, and more.

This time, a human or technical error broke the part of Cloudflare’s system that decides who is a real user and who might be a robot. It was as if the security guard received a guest list full of mistakes — unable to understand it, the safest choice was to send everyone away.

And because Cloudflare stands in front of so many major websites, this failure meant that a huge number of sites suddenly blocked all visitors. From the outside, it looked as though a significant part of the Internet had gone down. When so many sites rely on the same service, a disruption like this is similar to shutting down one of the world’s busiest highway intersections: everything connected to it becomes unreachable at once.

This is not a unique case, nor is it limited to Cloudflare. Amazon, Google, and many other companies have caused Internet-wide outages through their own mistakes in the past. While we can never completely rule out the possibility of a cyberattack, this incident highlights how fragile the Internet has become — the place where much of our daily life now happens.

A large portion of the online world rests in the hands of a small group of giant companies. When so much power is concentrated in so few places, even a single error can cause massive disruption. This is no longer just a technical issue; it is also an economic one — a natural consequence of today’s capitalist model.

A few recent examples

These large-scale failures happen more often than most people realize. A few recent examples:

  • Cloudflare — June 2025: A global outage lasting over two hours blocked access to major services around the world.
  • Cloudflare — November 2025: Another widespread failure temporarily took down platforms like X, ChatGPT, Spotify and many news sites.
  • Google Cloud — June 2025: A broken internal update crashed a core system, causing disruptions across services that rely on Google’s infrastructure.
  • Amazon Web Services — October 2025: A software bug in AWS automation tools triggered outages for thousands of apps and websites.

These incidents show how much of the Internet now depends on a handful of companies — and how a single mistake in any of them can ripple across the entire web.

If you’ve made it this far without Cloudflare blocking you, congratulations. Come find me on Bluesky, Mastodon, Twitter X, or LinkedIn if you fancy discussing internet fragility in a place that somehow runs on its own infrastructure. Code lives on GitHub, where at least the outages are my own fault.