blog.orange.tw is the personal site of Orange Tsai, a well-known security researcher who has presented at top conferences like Black Hat and Pwn2Own. Unlike many sites you research, this one isn't trying to sell you anything or collect your data. It's simply a place where the author shares technical write-ups and talks. The domain has been active since 2012, and its content gets regular attention on Hacker News – a strong external trust signal. The technical setup is clean: served over Fastly's CDN with modern encryption, and Google's Safe Browsing sees no threats. For a security-focused blog, missing legal pages and contact info are perfectly normal. If you're wondering whether blog.orange.tw is safe, the answer is yes – it's a legitimate, long-standing resource in the security community.
In plain English
This is the personal blog of security researcher Orange Tsai, and it's been online for over 13 years with a spotless record. No scam flags, no malware, and a history of respected content shared on Hacker News. Safe to read and follow.
Where the score comes from
Modern TLS, no malware flags, and a clean Google Web Risk check. For a personal blog, this is more than adequate – nothing to worry about.
The domain has been around for 13 years and belongs to a known public figure (Orange Tsai). WHOIS privacy is standard for individuals and doesn't hide anything suspicious.
Hacker News has featured this site's content multiple times over nearly a decade. The Wayback Machine shows 13 years of consistent history, and no blacklists have flagged it.
The site has a clear About page and custom branding, which is good. Missing contact info is normal for a personal blog – you're not sending money or personal data here.
No privacy policy or terms of service, but that's expected for a hobby blog that doesn't collect payments or sensitive information. No compliance obligations apply.
Served by Fastly's CDN with a valid certificate – solid hosting. The lack of DNSSEC is a minor gap but not a concern for a read-only blog.
What we checked
Security & Transport
Certificate issued by Let's Encrypt
No threats detected by Google Web Risk
Cloudflare's malware-blocking resolver (1.1.1.2) answered normally for this domain. These resolvers refuse domains their threat intelligence lists for malware or phishing, and a scam only days old often isn't listed yet. Quad9 gave no usable answer.
Valid certificate, expires in 73 days
Neither a visitor arriving from a Google search nor Google's crawler was sent elsewhere or shown spam that a direct visit wasn't. Cloaking that checks the visitor's network address can't be seen from our server.
Site does not set common security response headers (CSP, HSTS, X-Frame-Options, etc)
Web server: GitHub.com
Connection uses TLS 1.3
Identity & WHOIS
Site publishes an About / Team / Company page — a transparency signal that the operator is willing to describe who runs the business.
Site has custom branding and social media metadata
No dedicated legal-entity disclosure page detected — common and expected outside the EU, but required for commercial sites in Germany, France, Spain, Italy, and other EU jurisdictions.
No contact page link, email address or phone number found on the homepage
Domain created 2012-11-01 (13 years, 11 months ago) — registration of the parent domain orange.tw
Expires in 2194 days
No privacy policy or terms of service found — expected for commercial sites, normal for personal blogs and hobby projects
The registration shows a privacy service or redaction notice in place of the owner. Most registrars do this by default since GDPR (2018), for companies as well as individuals, so it hides nothing unusual.
Registered through PCHOME
Infrastructure & DNS
Domain restricts which CAs can issue certificates: digicert.com, letsencrypt.org, sectigo.com, digicert.com, letsencrypt.org, sectigo.com
Site is served behind Fastly — indicates real operational investment in edge infrastructure
Not listed by SpamCop and Barracuda, the blacklists that answered
Resolves to: 2606:50c0:8000::153, 2606:50c0:8001::153, 2606:50c0:8002::153, 2606:50c0:8003::153, 185.199.109.153, 185.199.110.153, 185.199.111.153, 185.199.108.153
Domain is not signed with DNSSEC
DNSSEC status from WHOIS
No MX records found — domain may not handle email
Hosted on: AS54113 FASTLY (US)
Fast page load, timed once from our server in Europe including the DNS lookup, connection setup and any redirects
Reputation & Reach
Hacker News readers upvoted links to this site in 4 different years between 2016 and 2026. The most upvoted, "WorstFit: Unveiling Hidden Transformers in Windows ANSI" (2025), got 373 points.
og:type declared as website
HTML declares lang="en"
Google's Chrome UX Report publishes data for https://blog.orange.tw, which it only does once enough distinct real Chrome users have visited over the last 28 days.
Site maintains a proper sitemap with 101 indexed pages
No social media links found on homepage
No structured data markup found
This site is not in the top 1 million most visited websites — this is normal for small or new businesses
Earliest archive snapshot from 20121106
Website is live and responding
No robots.txt file — common for small sites
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