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Teach Your robots.txt a New Trick (for AI)

Brooks Cunningham

Senior Security Strategist, Fastly

Control how AI bots like Google-Extended and Applebot-Extended use your website content for training. Update your robots.txt file with simple Disallow rules.

September 16, 2025
Curated Collection

Staying Secure in 2025

All blog posts

  • Teach Your robots.txt a New Trick (for AI)

    Brooks Cunningham

    Control how AI bots like Google-Extended and Applebot-Extended use your website content for training. Update your robots.txt file with simple Disallow rules.

    CDN & Delivery
    + 3 more
  • Fastly + Scalepost: Extending the Fastly platform to manage AI Crawlers

    John Agger

    See when and how AI chatbots use your content. With Fastly and ScalePost, publishers finally gain visibility into how their work shows up in AI-generated answers.

  • DDoS in August

    Liam Mayron, David King

    August 2025 DDoS attack trends: Hyperscale clouds are the source for 70% of attacks. Get insights on the latest application DDoS trends to strengthen security.

    Security
    + 2 more
  • Control and Monetize Your Content with the RSL Standard

    Simon Wistow

    AI crawlers are scraping the web, often ignoring rules and costing publishers resources. The new RSL Standard lets you block, allow, or even charge AI for access to your content. Here’s how it works.

    CDN & Delivery
    Product
    An illustration of a keyboard with a lever in the middle and a hand pushing the lever forward
  • Sustainability dashboard: Shine a light on your digital carbon footprint

    Eoghan Kelly

    Fastly's Sustainability dashboard provides instant access to electricity-related Scope 2 & 3 emissions data. Understand and optimize your digital carbon footprint with ease.

    CDN & Delivery
    + 3 more
  • CISO Perspective: Q2 2025 Threat Insights Report

    Marshall Erwin

    Explore Fastly's Q2 2025 Threat Report through our CISO, Marshall Erwin's eyes. Uncover bot traffic insights and key security practices.

    Security
    Industry insights
  • Bridging the real-time testing gap: Fanout support in local development for Fastly Compute

    Katsuyuki Omuro

    Fastly Compute now supports local Fanout testing, letting you build and validate real-time features without deploying to production.

    Engineering
    + 2 more
  • Powering PyPI with Advanced Traffic Engineering

    Joe Williams, Stephen Strowes

    PyPI serves millions daily. See how Fastly’s Individual Provider Anycast unlocks faster, smarter routing for Python’s package index.

    CDN & Delivery
    + 4 more
  • Vibe Shift? Senior Developers Ship nearly 2.5x more AI Code than Junior Counterparts

    Alina Lehtinen-Vela

    Fastly’s survey shows senior developers trust gen AI tools enough to ship 2.5x more AI code, while juniors stick to traditional coding and caution.

    Industry insights
    Engineering
  • Fastly DDoS Protection wins SiliconANGLE TechForward Cloud Security Award

    David King

    Fastly DDoS Protection wins SiliconANGLE TechForward Cloud Security Award after rigorous analysis by 32 industry peers.

    Security
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  • Why Paying Copyright Holders for AI Training is Essential

    Simon Wistow, John Agger

    AI and creator rights don’t need to clash. A fair, consent-based model can drive innovation without exploiting creative work.

    Industry insights
  • The Truth About Blocking AI, And How Publishers Can Still Win

    Simon Wistow

    Many AI crawlers aren’t following the rules, and robots.txt can’t stop them. Blocking Google’s AI means killing your SEO, but publishers aren’t completely out of options. Edge control is becoming their last real defense.

    Security
    Industry insights
  • AI Bots in Q2 2025: Trends from Fastly's Threat Insights Report

    Matthew Mathur, David King, + 1 more

    Fastly's Q2 2025 Threat Insights Report uncovers how Meta, OpenAI, and others are shaping web traffic and what organizations need to do to stay in control.

    Security
    Industry insights
  • DDoS in July

    Liam Mayron, David King

    July 2025 DDoS attack trends: Fastly's report reveals infrequent but massive enterprise attacks & insights on attack volume, industries targeted, and company size.

    Security
    Industry insights
  • Request Collapsing Demystified

    Stephen Crim

    Boost website performance with request collapsing! Learn how it improves efficiency, reduces origin load, and optimizes caching for a snappy user experience.

    Performance
    + 2 more
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  • Maximizing Compute Performance with Log Explorer & Insights

    Namit Shivaram

    Monitor and troubleshoot Fastly Compute services with Log Explorer & Insights. Gain granular insights, optimize performance, and debug faster for efficient applications.

    Compute
    + 2 more
  • Demystifying Fastly’s Defense Against HTTP Desynchronization Attacks

    Brian Haberman, Sandra Escandor-O’Keefe, + 1 more

    Learn how Fastly's robust architecture and strict protocol parsing defend against HTTP desynchronization attacks, ensuring your web applications are secure.

    Security
    + 3 more
  • Trust at Scale with Fastly Image Optimizer and C2PA

    James Sherry

    Fastly Image Optimizer now supports C2PA, enabling verifiable content authenticity. Combat misinformation and build trust with secure image provenance at scale.

    CDN & Delivery
    + 2 more
  • Fastest Sites Run on Fastly

    Leon Brocard

    Make your site 25%+ faster with Fastly’s programmable edge. See why the fastest media sites — from Vox.com to Business Insider — run on Fastly.

    Performance
    + 2 more
  • Fastly's Resilience to HTTP/1.1 Desynchronization Attacks

    Frederik Deweerdt, Kazuho Oku, + 2 more

    Discover why Fastly's architecture protects against HTTP/1.1 desynchronization attacks, unlike other CDNs. Protect your applications with Fastly's secure platform.

    Security
    + 4 more