The Fastly Next-Gen WAF (powered by Signal Sciences) protects apps wherever they live: on-premises, in containers, in the cloud, and — as of today — at the edge. This makes it the industry’s first and only unified WAF.

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 can do to prevent it.

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 controls can support a safer GraphQL implementation.

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, and more.

Il nostro nuovo framework di efficacia WAF fornisce un modo standardizzato per misurare l’efficacia delle capacità di rilevamento di un web application firewall attraverso verifica e convalida continue. Ecco come funziona.

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 situation. We also share our guidance around testing your environment against many of the new obfuscation methods that have been seen.

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 today’s builders can use to drive the next three decades of the web.

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 is just one example of what it can do.

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 we think about the future of security.

On November 11th 2021, Fastly Engineering received alerts related to segmentation faults on Compute@Edge. A Fastly investigation into CVE-2021-43790, a bug in Lucet, a dependency of Compute@Edge, is disclosed in a recent Bytecode Alliance security advisory. Fastly investigations have not identified additional impact outside of the single case disclosed in this advisory. It's our goal in this Fastly Security Advisory to illustrate our knowledge about the bug discovered and the actions we have taken to prevent further possible impact to our customers.

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, and scalable user experiences. We must embrace a more dynamic mindset in how we approach web development and consider the tools we need to get there.

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 builders in general — can champion innovation, mainly around architecture and security.

Compute, 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 a new templated rule to prevent exploitation.

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 create a rule to block exploitation.

Organizations implementing DevOps practices often sacrifice security for speed, exposing them to potential threats. In reality though, many DevOps practices are already primed for security initiatives.

Forrester’s 2021 Annual State of Application Security Report stresses the need for updated application security tools that can be easily integrated into development plans and architecture.

Your organization may have operational and cultural roadblocks to overcome when it comes to integrating security and DevOps. These tips can help you ensure a smooth transition to more secure DevOps.