Is www.fastly.com Safe? Security Assessment | CyStack
www.fastly.com
Powering the best of the internet | Fastly
Fastly's edge cloud platform delivers faster, safer, and more scalable sites and apps to customers. Elevate your edge CDN, video delivery, security, and more.
Industry
Computers, Electronics and Technology / Programming and Developer Software
Origin
United States
Global rank
#127,235
Rank in United States
#65,771
Updated at
B86.7/100
Security level
Good
Data confidence
High
Scope checked
92.9%
The score and grade reflect the result recorded at scan time. Review each check and its evidence for the full context.
Is the website “www.fastly.com” safe?
This report summarizes the security observations recorded for www.fastly.com at scan time. Review each check and its evidence for the full context.
Does www.fastly.com show known scam, phishing, or malware signals?
At assessment time, CyStack did not find www.fastly.com or related infrastructure on any scam, phishing, or malware warning list after checking 5 online reputation sources. This result reflects external observations; it does not guarantee absolute safety or verify the organization’s legal status or reputation.
Potentially exposed domain email addressesChecks infostealer data for email addresses ending in @fastly.com, the registered domain of the assessed website www.fastly.com. A record is not counted merely because someone visited or signed in to the website.4 matching email exposure records
4Matching email exposure records
2Related infected devices (estimated)
These matching email records were observed previously, but they may already have been addressed or may no longer be valid. The device count estimates infected devices associated with these email records; it is not the number of devices owned by the organization.
Data sources
Data compiled from CyStack cybersecurity monitoring systems
CyStack compiles scan results from its internal cybersecurity monitoring systems, including CyStack VulnScan and CyStack Threat Intelligence, together with publicly available Internet data. The assessment only observes and analyzes information already available; it does not attempt unauthorized access, test passwords, send exploit code, or change or disrupt the assessed system.
These 3 failed checks or warnings have the greatest impact on the result for www.fastly.com.
Allowed browser content (CSP)The result recorded “Allowed browser content (CSP)” as failed at scan time. Confirm the current condition before acting.High
Why it matters
Content Security Policy (CSP) limits where scripts, styles, frames, and other browser content may come from. A strong policy reduces the impact if an attacker manages to inject content into a page.
What to do
Define only the sources the application needs, test the policy before activating it, and avoid broad wildcard (*) rules, unsafe-inline, and unsafe-eval where possible.
Certificate expiry and validityThe certificate is valid from 2026-08-05T20:28:03Z to 2026-09-04T20:28:02Z.High
Why it matters
A certificate works only between its start and expiry dates. An expired, not-yet-valid, or soon-to-expire certificate can trigger browser warnings and interrupt access to the website or API.
What to do
Use automatic renewal, monitor renewal failures, and alert the responsible team well before expiry.
Authorized email senders (SPF)No SPF record was found.Medium
Why it matters
Sender Policy Framework (SPF) lists the systems allowed to send email for the domain. Without it, receiving services have less evidence to distinguish legitimate mail from spoofed mail.
What to do
Publish one SPF TXT record that includes every legitimate email service and no unauthorized sender.
Leak evidenceMost recent observation:
Email addressRelated infected deviceInfection evidenceRecorded time
Email addressC********@fastly.comRelated infected deviceNo safely shareable device details are available for this record.IOC reference: IOC-6077C12F7EInfection evidenceStealCRecorded timeEmail addressI**********@fastly.comRelated infected deviceNo safely shareable device details are available for this record.GermanyIOC reference: IOC-6055D37A17Infection evidenceEmail addressC******@fastly.comRelated infected deviceNo safely shareable device details are available for this record.IOC reference: IOC-6077C12F7EInfection evidenceStealCEmail addressI*************@fastly.comRelated infected deviceNo safely shareable device details are available for this record.IOC reference: IOC-6077C12F7EInfection evidenceStealC
Data provided by
Discovered subdomains (98+)Subdomains of fastly.com, the registered domain of the assessed website www.fastly.com. Sensitive-looking names are shown first; individual subdomains have not been separately security-tested.Partial
admin-compute.fastly.comSensitive-lookingAdmin system
Public web contextThe website title, description, industry and popularity.Website rankings and industry category are based on data from Similarweb
Page title
Powering the best of the internet | Fastly
Website category
Computers, Electronics and Technology / Programming and Developer Software
Description
Fastly's edge cloud platform delivers faster, safer, and more scalable sites and apps to customers. Elevate your edge CDN, video delivery, security, and more.
Global rank
#127,235
Rank in United States
#65,771
Rank in industry
#1,303
Final URL
https://www.fastly.com/
This is a quick, point-in-time check from outside the organization. It can surface visible risks, but it does not replace penetration testing or an authenticated assessment.
Industry
Updated at 
United States
