Security blog

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…

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.

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…

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…

Compute@Edge, our serverless compute environment, can be used to solve headaches dealing with attackers looking to modify and manipulate resources. In this post, we tell you how.

Our Security Research Team provides guidance on how to address CVE-2021-40438, a vulnerability in Apache HTTP Server version 2.4.48 and earlier, by patching impacted version(s) and enabling…

The recent Apache HTTP Server vulnerability (CVE-2021-41773) is reportedly being exploited in the wild. Fastly already detects this vulnerability, but our next-gen WAF customers can also…