AireStream

    How We Handle Your Data

    Client data notice and sub-processor list

    Last updated: 26/10/2026

    This notice explains what data we collect during an audit engagement, who processes it, where it is stored, and how long we keep it. It supplements our Privacy Policy and the Data Processing Agreement we sign with every client.

    What we collect during an engagement

    Kick-off questionnaire: your services, brand names, competitor names, and details of key personnel (names, roles, credentials, LinkedIn URLs) that you choose to share.

    Website data: a crawl of your publicly accessible website content and technical configuration.

    Google Search Console and Bing Webmaster Tools: read-only access you grant us, used to analyse search queries and page performance. We never modify your properties, and access is revoked when the engagement ends.

    Analytics data: only where you grant access, and only what is needed for the audit.

    Public visibility signals: we look up how your brand appears across search engines, maps and business listings, review sites, knowledge graphs and company registries, and community sites. These providers receive limited data such as your brand name, domain and public URLs.

    Competitor benchmarking: we also review publicly available competitor pages.

    Anonymised research data

    With your instruction under our agreement, we anonymise engagement data so it no longer identifies you or any individual, and use it to improve our methodology and benchmarks. See your Data Processing Agreement for details.

    Who is responsible

    You remain the data controller of all data you provide or grant access to. AireStream Ltd acts as your data processor, under a signed Data Processing Agreement. We are ICO-registered (registration ZC103113). For our own records (contracts, invoices, contact details) we act as an independent controller under our Privacy Policy.

    Who touches your data (sub-processors)

    We use a small set of vetted providers. Every AI provider below is used under commercial terms (API or business plans) that prohibit training on your data.

    ProviderWhat they doLocation
    Hetzner Online GmbHHosts our audit engine and working dataGermany / Finland (EEA)
    AnthropicAI analysis (Claude API and Claude for Work)USA
    OpenAIAI analysis (API)USA
    GoogleAI analysis (Gemini API, paid tier); search & visibility data (Places, PageSpeed Insights, Chrome UX Report, Search Console, Knowledge Graph); business email (Google Workspace)USA
    Perplexity AIAI search visibility testing (API)USA
    MicrosoftAI analysis (Azure OpenAI) and document storage / productivity (Microsoft 365)USA / EU
    NetlifyHosting of client-facing report pages (benchmarks and assessments)USA
    GranolaAI meeting notes and transcription for client callsUSA
    SlackInternal team messaging about engagementsUSA
    DataForSEOSearch engine results (SERP) and SEO data for visibility analysisEU (Estonia)
    AhrefsSEO and backlink data for visibility analysisSingapore
    TrustpilotPublic review signals for the brandUSA / EU
    SentryError & performance monitoring (diagnostics; personal data redacted)USA (EU region available)

    DataForSEO, Ahrefs and Trustpilot receive only limited identifiers such as your brand name, domain and public URLs.

    Where a provider is located outside the UK or EEA, we rely on an appropriate UK transfer safeguard: UK adequacy for EEA providers, the UK Extension to the EU-US Data Privacy Framework, or the UK International Data Transfer Addendum (IDTA) / Standard Contractual Clauses (for example, Ahrefs in Singapore). Copies of the relevant safeguards are available on request.

    We give clients at least 30 days' written notice before adding or replacing a sub-processor.

    Within AireStream

    Only AireStream's directors access client data on a need-to-know basis. We never enter your personal data or confidential information into consumer AI tools. Our internal AI Usage Policy restricts client data to the commercial AI services listed above.

    How long we keep it

    DataRetention
    Search Console / Bing / analytics accessRevoked at the end of the engagement
    Questionnaire responses, crawl data, analysis working data12 months after delivery in identifiable form (so a re-audit can measure progress), then anonymised. Anonymised data is no longer personal data and is retained for our research and benchmarking.
    Data held by AI providersAnthropic API 7 days (Claude for Work per Anthropic's commercial retention settings); OpenAI 30 days; Google Gemini API up to 55 days for abuse monitoring; Perplexity zero-retention
    Audit deliverables and contractual records6 years (contract and tax requirements)
    Error / diagnostic logs (Sentry)Retained per provider settings; personal data redacted from diagnostics

    You can request earlier deletion of engagement data at any time, subject to legal retention requirements.