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Manage and control the use of dedicated egress IPs with Cloudflare Zero Trust

Before identity-driven Zero Trust rules, some SaaS applications on the public Internet relied on the IP address of a connecting user as a security model. Users would connect from known office locations, with fixed IP address ranges, and the SaaS application would check their address in addition to their login credentials.Many systems still offer that...

Get notified about the most relevant events with Advanced HTTP Alerts

Today we’re excited to be announcing more flexibility to HTTP alerting, enabling customers to customize the types of activity they’re alerted on and how those alerts are organized.Prior to today, HTTP alerts at Cloudflare have been very generic. You could choose which Internet properties you wanted and what sensitivity you wanted to be alerted on, but...

Cloudflare's handling of a bug in interpreting IPv4-mapped IPv6 addresses

In November 2022, our bug bounty program received a critical and very interesting report. The report stated that certain types of DNS records could be used to bypass some of our network policies and connect to ports on the loopback address (e.g. 127.0.0.1) of our servers. This post will explain how we dealt with the report, how we fixed the bug, and...

Uptick in healthcare organizations experiencing targeted DDoS attacks

Healthcare in the crosshairsOver the past few days, Cloudflare, as well as other sources, have observed healthcare organizations targeted by a pro-Russian hacktivist group claiming to be Killnet. There has been an increase in the amount of healthcare organizations coming to us to help get out from under these types of attacks. Multiple healthcare organizations...

CVE-2022-47929: traffic control noqueue no problem?

USER namespaces power the functionality of our favorite tools such as docker and podman. We wrote about Linux namespaces back in June and explained them like this:Most of the namespaces are uncontroversial, like the UTS namespace which allows the host system to hide its hostname and time. Others are complex but straightforward - NET and NS (mount) namespaces...

Rumo a uma estrutura global para fluxos de dados internacionais e proteção da privacidade

À medida que as nossas sociedades e economias dependem cada vez mais das tecnologias digitais, aumenta a necessidade de partilhar e transferir dados, incluindo dados pessoais, através da internet. Os fluxos de dados internacionais tornaram-se essenciais para o comércio internacional e o desenvolvimento econômico global. Na verdade, a transformação digital...

Towards a global framework for cross-border data flows and privacy protection

This post is also available in Deutsch and Français. As our societies and economies rely more and more on digital technologies, there is an increased need to share and transfer data, including personal data, over the Internet. Cross-border data flows have become essential to international trade and global economic development. In fact, the digital...

Inside Geo Key Manager v2: re-imagining access control for distributed systems

In December 2022 we announced the closed beta of the new version of Geo Key Manager. Geo Key Manager v2 (GeoV2) is the next step in our journey to provide customers with a secure and flexible way to control the distribution of their private keys by geographic location. Our original system, Geo Key Manager v1, was launched as a research project in 2017,...

Cyberattacks on Holocaust educational websites increased in 2022

Today we mark the International Holocaust Remembrance Day. We commemorate the victims that were robbed of their possessions, stripped of their rights, deported, starved, dehumanized and murdered by the Nazis and their accomplices. During the Holocaust and in the events that led to it, the Nazis exterminated one third of the European Jewish population....

Navigating the changing data localization landscape with Cloudflare’s Data Localization Suite

This post is also available in Português. At Cloudflare, we believe that deploying effective cybersecurity measures is the best way to protect the privacy of personal information and can be more effective than making sure that information stays within a particular jurisdiction. Yet, we hear from customers in Europe, India, Australia, Japan, and many...

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