The privacy problem with search
Every time a visitor types a query into a traditional site search, that keystroke is sent to a third-party server. The server logs the query, timestamps it, and often ties it to an IP address, session ID, or user account. This happens on every keystroke if you use an as-you-type search provider.
Search queries are personal data under GDPR. They reveal what people are thinking, what they want to buy, what medical symptoms they are researching, and what financial products they are comparing. The European Data Protection Board has made clear that search queries constitute personally identifiable information, especially when combined with identifiers like IP addresses or cookies.
The moment you send search queries to a third-party server, you become a data processor with real obligations. You need a Data Processing Agreement with your search provider. You need consent flows for search tracking. You need to handle data subject access requests — if a user asks what search queries you have stored about them, you must be able to answer. You need deletion workflows, data retention policies, and cross-border transfer mechanisms if your search provider operates outside the EU.
This is not a hypothetical burden. Fines under GDPR reach up to 4% of global annual revenue. And regulators are paying more attention to third-party data processors than ever before.