Back to blog

Follow and Subscribe

Security

Page 10

  • 4 Ways Legacy WAF Fails to Protect Your Apps

    Liz Hurder

    The legacy WAF isn’t ubiquitous because it’s the perfect technology. Its success comes down to being mandated, despite four ways it often fails.

    Security

  • Suggestive signals: how to tell good bot traffic from bad

    Brendon Macaraeg

    While some bots are benign search engine crawlers or website health monitors, others are on the prowl with nefarious intent, looking to execute account takeovers and compromise APIs. In this post, we’ll look at how to tell them apart in order to allow the good bots and block the bad ones.

    Security

  • Cranelift vetted for secure sandboxing in Compute@Edge | Fastly

    Pat Hickey, Chris Fallin, + 1 more

    Alongside the Bytecode Alliance, Fastly’s WebAssembly team recently led a rigorous security assessment of Cranelift, an open-source, next-generation code generator for use in WebAssembly to provide sandbox security functionality.

    Industry insights
    + 3 more

  • Answers to your top Kubernetes security questions

    Brendon Macaraeg

    As Kubernetes has become widespread for container orchestration needs, it’s natural for security questions to arise. Here are answers to the Kubernetes questions we hear most often.

    Security

  • Memory flaw in Cranelift module

    Fastly Security Research Team

    The bug identified in the Cranelift x64 backend performs a sign-extend instead of a zero-extend on a value loaded from the stack, when the register allocator reloads a spilled integer value narrower than 64 bits. This interacts poorly with another optimization: the instruction selector elides a 32-to-64-bit zero-extend operator when we know that an instruction producing a 32-bit value actually zeros the upper 32 bits of its destination register. Hence, the x64 compiler relies on these zeroed bits, but the type of the value is still i32, and the spill/reload reconstitutes those bits as the sign extension of the i32’s MSB.

    Security

  • Prevent Wasm Compiler Bugs Early | Fastly

    iximeow, Chris Fallin

    We recently discovered a compiler bug in part of the WebAssembly compiler that we use for Compute@Edge, that could have allowed a WebAssembly module to access memory outside of its sandboxed heap. But because of the people, processes, and tools we have in place, the bug was caught and patched on our infrastructure before it was exploited.

    Security
    WebAssembly

  • More is less: stop adding to your security tool technical debt

    Brendon Macaraeg

    Throwing new security tools at new threats results in scattershot protection and builds technical debt. Organizations need uniform protection for applications and APIs, regardless of where they live.

    Security

  • API and ATO Security Challenge Addressed | Fastly

    Brendon Macaraeg

    New Fastly next-gen WAF dashboards surface security telemetry from more than 20 new signals for advanced attack scenarios, such as account takeover, credit card validation, and password reset.

    Security
    Observability

  • Fastly and Okta partner to lock down layer 7

    Sean Leach

    Layer 7 is a primary battleground for web application and API security. Fastly and Okta have partnered together to share threat intelligence, so security and development teams can better protect their systems.

    Security
    Company news

  • Building Security Mindset in Engineering

    Kevin Rollinson

    Explore how leaders from both sides of the aisle have built thriving secure DevOps cultures by putting trust in people first.

    Security
    DevOps

  • You asked, we delivered: Terraform support for TLS is here

    Joe Hoffend, Sudhir Patamsetti

    Teams can now automate their Fastly TLS workflows through Terraform — including issuing certificates, retrieving TLS details, and performing other updates.

    Security
    Product

  • Fastly (Signal Sciences) repeated Customers’ Choice | Fastly

    Andrew Peterson

    Fastly (Signal Sciences) has been recognized as a Customers’ Choice for Web Application Firewalls in the 2021 Gartner Peer Insights “Voice of the Customer” report.

    Company news
    + 2 more

  • Next-Gen WAF for Microsoft Exchange | Fastly

    Fastly Security Research Team, Xavier Stevens, + 1 more

    Fastly’s security research team has built and deployed a rule to protect Signal Sciences Next-Gen WAF customers against the recently announced Microsoft Exchange Server vulnerabilities.

    Product
    Security

  • Engineering leaders: security is your job, too

    Sean Leach

    The rise of secure DevOps has left many security professionals vying for the attention and support of their engineering counterparts. What can engineering leaders do to bridge the gap? We have four ideas to help you build security into your DevOps culture, workflows, and goals.

    Culture
    + 3 more

  • 3 Benefits CDN's Bring to Startups

    Simon Wistow

    A modern CDN can help improve SEO rankings, make it easier to deliver personalized content, and secure your sites and apps — three keys to a startup’s success.

    Performance
    + 2 more

  • The new rules for web app and API security

    Sean Leach

    Nearly everything we know about building web applications and APIs has changed in the last few decades. So why hasn't security? We argue it's time for a new approach to web app and API security, one that follows suit with how applications are really built and teams really work.

    DevOps
    Security

  • A unified platform is the future of secure DevOps

    Cassandra Dixon

    Fastly and Signal Sciences have joined forces to build the next generation of web app and API security at the edge. Explore what makes our approach different, and how it will empower developers to build more securely than ever before.

    Security
    Events

  • DDoS attacks grow bigger, but so do responses

    Michael Sabbota

    DDoS attacks have been growing larger over the past few years. But so has the industry’s response to them. In this post, we take a look at what industry bodies and a modern CDN can do to protect your traffic.

    Industry insights
    Security

  • 5 best practices for your TLS configuration

    Maria Espada

    The TLS Support Engineering team provides support for customers managing one to thousands of certificates. After helping so many customers tailor their DNS and TLS configurations, they have five best practices to recommend.

    Security

  • Prepare for DDoS attacks: 5 steps to take | Fastly

    Gino Lang

    Layer 7 attacks that target applications and issue requests that can swamp origin systems often seek to blend into other network traffic and require a more focused defense than Layer 3 and 4 attacks. Here are five best practices you can implement to help prepare for such attacks.

    Industry insights
    Security
Fastly
© Fastly 2025