United States (US) audit hub
Audit hub for major United States websites — the world's largest tech ecosystem and the bulk of the global SaaS, fintech and consumer-internet surface.
The United States hosts the deepest concentration of consumer-internet, B2B SaaS and infrastructure properties on the public web — six of the ten most-visited domains worldwide are headquartered between San Francisco and Seattle, and a long list of category-defining companies (Stripe, Shopify, Cloudflare, Vercel, Datadog) routinely set the technical bar that the rest of the industry copies. From an auditing standpoint US-headquartered properties skew toward modern stacks: TLS 1.3 is essentially universal across the larger surface, HSTS preload submission is common, and DMARC enforcement at p=quarantine or p=reject is the default rather than the exception. Performance hygiene is good in aggregate but uneven across verticals — fintech and SaaS dashboards score high on Core Web Vitals while legacy retail and media properties carry visible third-party tag bloat. SEO patterns reflect mature search-marketing teams: schema-markup adoption is broad (Organization, Product, FAQPage, BreadcrumbList), and most sites publish XML sitemaps the size of small databases. Email deliverability is well-managed because deliverability tooling, SPF/DKIM/DMARC tuning and BIMI rollout originated in the US ecosystem. The vulnerability profile most unique to US properties is the volume and scale of their attack surface — large companies operate hundreds of subdomains, and stale subdomain takeovers, expired CNAMEs to retired SaaS vendors, and forgotten Heroku/Vercel apps are an ongoing source of incident reports.