Fastly
Fastly is a major content-delivery and edge-compute network used by many large media and application sites. It is identified from the X-Served-By, X-Cache and Via headers it adds to responses.
Fastly fronts the origin and absorbs automated traffic, so its presence is a hosting fact. The security verdict for a scanned site comes from the page’s actual content.
Commonly deployed alongside Fastly
Of the 2,779 public scans where Fastly was detected, these are the technologies most often present on the same site. The share is the percentage of Fastly sites that also ran each one.
| Technology | Category | Share of Fastly sites |
|---|---|---|
| HSTS | wappalyzer | 67.79% |
| PHP | wappalyzer | 64.66% |
| Nginx | wappalyzer | 64.2% |
| MariaDB | wappalyzer | 64.2% |
| Pantheon | wappalyzer | 64.2% |
| MetaGenerator | miscellaneous | 49.87% |
| Google Analytics | wappalyzer | 46.31% |
| Open-Graph-Protocol | miscellaneous | 38.93% |
| Google Tag Manager | wappalyzer | 36.13% |
| jQuery | wappalyzer | 35.66% |
| Drupal | cms | 34.4% |
| GitHub Pages | wappalyzer | 32.39% |
| Drupal | wappalyzer | 29.36% |
| JQuery | miscellaneous | 26.38% |
How ScanMalware detects Fastly
Fastly is detected by analysing the response headers, HTML markup, JavaScript runtime and asset URLs captured when ScanMalware loads the site in a real headless browser.
From any scan you can pivot into related signals — JARM TLS fingerprints, ASN ownership and BGP routing, certificate history, JavaScript analysis and the overall security verdict — to understand not just that Fastly is present, but how it is being used. Open the full search interface for Fastly →
Recent public scans featuring Fastly
A rolling sample of recent public scans where Fastly was detected. Listing a site here is not a safety judgement — open a scan to see its full verdict.
| Site | Scanned |
|---|---|
| https://jamestore214.github.io | 2026-09-20 |
| DocuSign – Document Ready https://docusign-server.github.io/RFP2026 | 2026-09-20 |
| Contact | Dark Horse Promotions, Inc. https://darkhorsepromotions.com/contact/ | 2026-09-20 |
| Adult Family Home in Olympia, WA | Dementia Care | Olympia Senior Care https://olympiaseniorcarehome.com/index.html | 2026-09-20 |
| Home | Kean University https://kean.edu | 2026-09-20 |
| Cat Breeds - Cat Breed Library | Purina UK https://www.purina.co.uk/find-a-pet/cat-breeds | 2026-09-20 |
| https://s4lab.stanford.edu/mal/video/XXXSEXPorn-Xxx-%E0%A4%B9%E0%A4%A6-%E0%A4%B8%E0%A4%95%E0%A4%B8-ov9ol.html | 2026-09-19 |
| Portfolio https://theshreyaa.github.io | 2026-09-19 |
Frequently asked questions about Fastly
- Does using Fastly mean a website is unsafe?
- No. Fastly is a stack component, not a verdict. ScanMalware scores the whole page — its scripts, redirects, certificates, threat-intelligence matches and behaviour — so a site using Fastly can be perfectly safe or actively malicious.
- How many sites using Fastly has ScanMalware scanned?
- Fastly has been detected in 2,779 public scans on ScanMalware.com. Each scan is a real headless-browser visit, and the figure updates as new URLs are submitted.
- What technologies are commonly used with Fastly?
- Across scanned sites, Fastly is most often seen alongside HSTS, PHP and Nginx. The full co-occurrence breakdown is listed on this page.
Browse all profiled technologies on the technology index, or scan a URL to see its full stack.