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Uganda's January 13, 2021 Internet Shut Down

Two days ago, through its communications regulator, Uganda's government ordered the "Suspension Of The Operation Of Internet Gateways" the day before the country's general election. This action was confirmed by several users and journalists who got access to the letter sent to Internet providers. In other words, the government effectively cut off Internet...

KEMTLS: Post-quantum TLS without signatures

The Transport Layer Security protocol (TLS), which secures most Internet connections, has mainly been a protocol consisting of a key exchange authenticated by digital signatures used to encrypt data at transport[1]. Even though it has undergone major changes since 1994, when SSL 1.0 was introduced by Netscape, its main mechanism has remained the same....

Holistic web protection: industry recognition for a prolific 2020

I love building products that solve real problems for our customers. These days I don’t get to do so as much directly with our Engineering teams. Instead, about half my time is spent with customers listening to and learning from their security challenges, while the other half of my time is spent with other Cloudflare Product Managers (PMs) helping them...

Soar: Simulation for Observability, reliAbility, and secuRity

Serving more than approximately 25 million Internet properties is not an easy thing, and neither is serving 20 million requests per second on average. At Cloudflare, we achieve this by running a homogeneous edge environment: almost every Cloudflare server runs all Cloudflare products.Figure 1. Typical Cloudflare service model: when an end-user (a browser/mobile/etc)...

A Name Resolver for the Distributed Web

The Domain Name System (DNS) matches names to resources. Instead of typing 104.18.26.46 to access the Cloudflare Blog, you type blog.cloudflare.com and, using DNS, the domain name resolves to 104.18.26.46, the Cloudflare Blog IP address.Similarly, distributed systems such as Ethereum and IPFS rely on a naming system to be usable. DNS could be used,...

Cloudflare Radar's 2020 Year In Review

Throughout 2020, we tracked changing Internet trends as the SARS-Cov-2 pandemic forced us all to change the way we were living, working, exercising and learning. In early April, we created a dedicated website https://builtforthis.net/ that showed some of the ways in which Internet use had changed, suddenly, because of the crisis.On that website, we...

Untangling Compliance: Working Toward a Global Framework

As part of Cloudflare’s recent Privacy Week we hosted a series of fireside chats on security, privacy, and compliance. Many of these conversations touched on the intricate legal debate being held in Europe around data sovereignty. Here are some of the highlights.To learn more about the solutions Cloudflare launched to help businesses navigate their...

Meet The Workers Team Over Discord

The Cloudflare Workers team is excited to announce the opening of our Discord channel! You can join right away by going here.Through our Discord channel, you can now connect with the team to ask questions, show off what you’re building, and discuss the platform with other developers.Sometimes you just need to talk to another human being. Our developer...

Ransom DDoS attacks target a Fortune Global 500 company

In late 2020, a major Fortune Global 500 company was targeted by a Ransom DDoS (RDDoS) attack by a group claiming to be the Lazarus Group. Cloudflare quickly onboarded them to the Magic Transit service and protected them against the lingering threat. This extortion attempt was part of wider ransom campaigns that have been unfolding throughout the year,...

Internet traffic disruption caused by the Christmas Day bombing in Nashville

On December 25th, 2020, an apparent suicide bomb exploded in Nashville, TN. The explosion happened outside an AT&T network building on Second Avenue in Nashville at 1230 UTC. Damage to the AT&T building and its power supply and generators quickly caused an outage for telephone and Internet service for local people. These outages continued for...

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