Cloudflare Outage Temporarily Knocked Down Major Crypto Platforms

On 18 November 2025, Cloudflare, one of the world’s largest internet‑infrastructure providers suffered a major global outage that caused widespread disruption across many sectors, with the crypto industry among the hardest hit. 

Cloudflare subsequently confirmed the root cause: a routine configuration change triggered a bug in its bot‑management system, causing a configuration file to grow unexpectedly large and crash memory systems across a swathe of edge servers. The company emphasised the failure was not the result of a cyberattack. 

The impact was immediate. By around 11:20 UTC, users around the world began reporting “500 Internal Server Error” messages or blank loading screens. For roughly three hours, access to key crypto services was effectively blocked, including major exchanges such as BitMEX and Kraken, block explorers like Arbiscan, and analytics/DeFi‑dashboard tools such as DeFiLlama. 

Behind the scenes, trading engines, blockchains themselves and transaction processing were unaffected, but for many users the interface simply vanished. Cloudflare’s own internal dashboard also failed, hampering efforts by platform operators to diagnose and address the issue quickly. 

By 14:30 UTC, Cloudflare had deployed a fix, and within minutes announced that network stability had been restored. Full recovery across its services was confirmed later in the afternoon. 

The event underscored a fundamental, if under‑appreciated, vulnerability in much of the Web3 ecosystem: while blockchains are decentralised, many crypto platforms still rely on centralised infrastructure for web access. The outage served as a stark reminder that decentralisation of consensus does not guarantee decentralisation of user access or tooling. As critics pointed out, “we took an amazing decentralised technology and made it fragile by putting most services behind just a few providers.” 

If the crypto sector truly values decentralisation, this incident highlights the need to rethink dependencies on centralised web infrastructure. Platforms may increasingly need to invest in redundant, decentralised or multi‑provider access solutions, not just decentralised consensus.

Bitcoin remained fully operational and unaffected throughout.