Security blog

In this post, we present a look at our vulnerability remediation and engineering team and how they were able to roll out a recent fix for a QUIC/H2O vulnerability in under two weeks.

Open URL redirection is a class of web app security problems that make it easier for attackers to direct users to malicious resources. Here are some examples of how they do it and what you…

There are many benefits to adopting GraphQL, but its security implications are less understood. In this post, we’ll explore those implications and offer guidance on which defaults and…

In this post, we’ll take a look back at the past year through the eyes of our edge cloud network to explore what we saw across new protocol adoption, security initiatives, network growth…

We’re sharing our latest data and new insights into the Log4j/Log4Shell vulnerability (CVE-2021-44228 + CVE-2021-45046) in this post in order to help the engineering community cope with the…

Our new WAF efficacy framework provides a standardized way to measure the effectiveness of a WAF’s detection capabilities through continuous verification and validation. Here’s how it works.

CVE-2021-44228 is a Remote Code Execution vulnerability in the Apache Log4j library being actively exploited. We provide our observations into the exploit and a summary of its impact.

The web’s infrastructure — and the applications we build on it — must constantly evolve to meet the ever-transforming expectations of modern and future end users. We’ve gathered five lessons…

In this post, we’ll show how you can use information from an origin response to add an abuse IP address to our penalty box. We've been touting the promise of security at the edge, and this…

To create more secure and resilient web experiences, we must design, build, and execute applications with security top of mind, and consider how the lessons of the past 30 years inform how…

Many websites today are really applications, and we should be building them as such. To do that, we need application architectures and networks that are capable of supporting fast, secure…

As we look back to celebrate the 30th anniversary of the website, it’s also worth thinking about the next 30 years. There are a couple of areas where we — as engineers, developers, and…