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Cloudflare Says 'Fix Implemented'; What Is Cloudflare & How It Broke the Internet

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Published on November 18, 2025
Cloudflare Says 'Fix Implemented'; What Is Cloudflare & How It Broke the Internet

This morning, as we attempted to check on our own website, we were greeted with an all-too-familiar sight for millions of internet users worldwide: an error message. Hoodline itself, which relies on Cloudflare to distribute our content and protect against malicious attacks, became a casualty of one of the year's most significant internet infrastructure failures. The ironic twist? We were accessible in some parts of the United States but completely unavailable in others, a spotty recovery pattern that perfectly encapsulated the chaotic nature of today's global outage.

The disruption began around 6:20 AM ET when Cloudflare, the internet infrastructure giant that handles approximately 20% of all web traffic globally, experienced what it described as a "spike in unusual traffic" to one of its services. The result was immediate and far-reaching: thousands of websites either slowed to a crawl, became partially unavailable, or went completely dark.

The Internet's Invisible Shield Goes Down

If you've never heard of Cloudflare, you're not alone—but you've almost certainly used it. The San Francisco-based company operates what security experts call the internet's "invisible infrastructure," sitting between websites and their visitors to provide critical services that most users never see. According to Technology Magazine, Cloudflare maintains data centers in over 320 cities across 120 countries, delivering ultra-low latency to approximately 95% of internet users worldwide.

"Cloudflare is the biggest company you've never heard of," Professor Alan Woodward of the Surrey Centre for Cyber Security told The Guardian. The company's role as a "gatekeeper" includes monitoring traffic to defend websites against distributed denial-of-service (DDoS) attacks—when malicious actors try to overwhelm sites with requests—as well as verifying that users are human rather than bots.

What Went Wrong and Who Was Affected

The outage created widespread chaos across the digital landscape. Major platforms including X (formerly Twitter), OpenAI's ChatGPT, Spotify, and even Downdetector—the very website people use to check if other sites are down—all experienced significant disruptions. According to CNBC, Cloudflare shares fell more than 5% in premarket trading as the crisis unfolded.

A Cloudflare spokesperson explained that the company observed unusual traffic patterns around 11:20 UTC, causing traffic passing through its network to experience errors. "We do not yet know the cause of the spike in unusual traffic," the spokesperson stated. "We are all hands on deck to make sure all traffic is served without errors." The timing coincided with scheduled maintenance at data centers in Tahiti, Los Angeles, Atlanta, and Santiago, though it remains unclear whether these activities were related to the outage, as reported by The Guardian.

Understanding Cloudflare's Critical Role

To understand why a Cloudflare outage is so disruptive, it helps to understand what the company actually does. Cloudflare operates as a Content Delivery Network (CDN) and security provider, essentially acting as a protective layer between websites and the broader internet. When you visit a site protected by Cloudflare, your request doesn't go directly to that site's server—it goes through Cloudflare's network first.

This arrangement offers several critical benefits: it speeds up content delivery by caching website data on servers located closer to users; it protects against DDoS attacks by filtering out malicious traffic before it reaches the actual website; and it verifies that visitors are legitimate users rather than automated bots. According to Cyber Press, the incident began at approximately 11:48 UTC with significant internal service degradation impacting core services including Access and WARP across Cloudflare's global network.

However, this centralized protection becomes a vulnerability when Cloudflare itself experiences problems. As Roafly noted, "It doesn't matter if your server is up—if Cloudflare can't proxy your traffic, your users can't reach you." Users around the world reported that websites would load once, then fail entirely seconds later, or they couldn't pass Cloudflare's robot verification pages, finding themselves stuck in endless loops.

The Fragility of Internet Infrastructure

This outage is the latest in a troubling pattern that exposes how dependent the modern internet has become on a handful of infrastructure providers. Less than a month ago, Amazon Web Services suffered a daylong disruption that took down thousands of online services. Before that, Microsoft's Azure cloud and 365 services experienced a global outage. In July 2024, a faulty software upgrade by cybersecurity firm CrowdStrike caused widespread disruption that temporarily halted flights, impacted financial services, and forced hospitals to delay procedures, according to CNBC.

"We're seeing how few of these companies there are in the infrastructure of the internet, so that when one of them fails it becomes really obvious quickly," Professor Woodward told The Guardian. Graeme Stewart, head of public sector at cybersecurity company Check Point, put it more bluntly: "During today's outage, news sites, payments, public information pages and community services all froze. That was not because each organisation failed on its own. It was because a single layer they all rely on stopped responding."

The concentration of internet infrastructure in the hands of so few companies creates what experts call a "single point of failure" problem. According to Converge Digest, Cloudflare closed 2024 processing more than 20% of all internet traffic, enabling real-time security and performance optimization across businesses of all sizes. When that one layer stops working, the ripple effects are immediate and global.

Was This a Cyber Attack?

While the cause of the unusual traffic spike remains under investigation, Professor Woodward suggested to The Guardian that a cyber-attack was unlikely. A service as large and sophisticated as Cloudflare is designed without single points of failure, making it an improbable target for successful external attacks. The more likely culprits are internal system errors, configuration problems, or issues related to the scheduled maintenance activities that were underway during the incident.

The Road to Recovery

By approximately 8:09 AM ET, Cloudflare announced it had identified the issue and was implementing a fix. The company made targeted changes that allowed its Access and WARP services to recover, with error rates returning to pre-incident levels by 8:13 AM ET, according to Cyber Press. However, the recovery was uneven—what we experienced firsthand with Hoodline's spotty accessibility across different regions.

During remediation efforts, Cloudflare temporarily disabled WARP access in London, causing users in that city to experience connection failures as engineers worked to stabilize the system. As The Guardian reported, Cloudflare later announced that services were beginning to recover, though customers might continue to observe higher-than-normal error rates during continued remediation efforts.

What This Means for Internet Users

For the average internet user, these infrastructure outages offer a stark reminder of how the digital services we take for granted depend on invisible systems we rarely think about. When Cloudflare goes down, it doesn't just affect one website or service—it affects thousands simultaneously, from social media platforms to news sites to business applications.

As Euronews pointed out, Graeme Stewart warned that "any platform that carries this much of the world's traffic becomes a target. Even an accidental outage creates noise and uncertainty that attackers know how to use." The concentration of so much internet traffic through so few providers means that when something goes wrong, the impact is enormous and immediate.

The incident also highlights a broader question about internet infrastructure: is it healthy for so much of the web to depend on such a small number of companies? According to Converge Digest, Cloudflare reported record revenue of $1.67 billion for 2024, a 29% increase year-over-year, driven by growing demand for AI-powered security and networking solutions. The company is well-positioned for continued growth, but each outage reminds us of the risks inherent in this concentration of digital power.

As we publish this story, services continue their uneven recovery. Our own website, like thousands of others, remains a testament to the delicate balance of the modern internet—sometimes accessible, sometimes not, depending on where in the world you're trying to reach us from. It's a humbling reminder that even the companies protecting the internet's infrastructure aren't immune to the very problems they're designed to prevent.

Cloudflare has promised a detailed post-incident report explaining the exact root cause and outlining changes to prevent similar disruptions. For now, internet users worldwide are left with a clearer understanding of just how much we depend on companies most of us have never heard of—until they stop working.