Third-Party Cookies Phase-Out: Why First-Party Data Matters
Chrome has started restricting third-party cookies. Retargeting and cross-site analytics get shakier as a result, and first-party data - the stuff prospects hand you directly - becomes the dependable way to find and follow up leads. Run a small B2B company that lives off ad retargeting and website analytics for enquiries? Then yes, this touches your pipeline. The good news: the fix is mostly organisational. Capture what people tell you, record where it came from, keep it in one place.
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What Is Changing With Third-Party Cookies in Chrome?
On 4 January 2024 Chrome started restricting third-party cookies by default for 1% of users. Google’s stated plan is to ramp up to all users from Q3 2024, subject to addressing the competition concerns of the UK Competition and Markets Authority. It is all laid out in Chrome’s January 2024 cookie update. Mind you, that is the schedule as Google announced it. A plan, not a guarantee.
What does a browser in the test group actually see? New Tracking Protection controls. When a site tries to access third-party cookies, an eye icon shows up in the address bar. Click it and you get an explanation of the feature, plus the option to temporarily allow them.
For a small firm the consequence is plain. Retargeting audiences shrink, because fewer visitors can be recognised on other sites. And cross-site attribution gets patchier, so working out which ad led to which enquiry turns into guesswork more often.
Third-Party vs First-Party Data: What Is the Difference?
Third-party data is gathered about people by someone else, across other websites. First-party data is what people share with your company directly. The former often rides on a third-party cookie - a small file set by a domain other than the site being visited - which lets an ad platform recognise the same browser in many places.
In B2B, the direct kind comes out of everyday contact: enquiry forms, emails, meetings and calls, purchases and contracts, support requests. Nothing exotic. The real contrast is traceability. You know where each detail originated and what the person agreed to. Can you say that about a bought or inferred audience? Rarely.
Why First-Party Data Gets More Valuable for a Small B2B Company
Information you collected yourself does not hang on a browser setting or an ad platform. So it keeps working whatever happens with the Chrome cookie deprecation. Three more things going for it:
- Accuracy - details come from the prospect, not from guesses based on browsing behaviour.
- Relevance - when sales cycles are long, a short list of known accounts with context beats a large anonymous audience.
- Ownership - the records stay with you when you switch ad tools or agencies.
How to Collect Customer Data With Consent
Ask only for what you will use. Say why you ask. Record the person’s agreement at the moment they give it. In practice, collecting customer data with consent boils down to a handful of habits:
- Shorten forms to the essential fields.
- State the purpose next to the form, in plain words.
- Use a separate, unticked checkbox for marketing messages.
- Record the date and the exact wording of the consent.
- Make withdrawal as easy as signing up.
People part with contact details far more readily when they get something useful back: a quote, a demo, a checklist, a place at an event. Fair trade. Whatever you offer, the mechanics of capturing website form leads should send each submission straight to the person who will reply (not to a shared inbox nobody opens).
GDPR sets the frame, at a high level: you need a lawful basis, you use the information only for the purpose you stated, and you keep no more than necessary. The specifics for your situation? Check them with a legal adviser.
Using the CRM as a Data Source: Which Fields Are Worth Keeping?
The CRM becomes the single record of who a prospect is, how they reached you and what was agreed. So keep only fields someone will act on. A workable set:
- source of the contact (form, referral, event, call)
- date of first contact
- company and role
- stated need or product interest
- consent status and date
- last interaction and next step
Record the source at entry. Not later, from memory. And keep its values consistent with a fixed list or tags, otherwise you end up with five spellings of “referral”. In EpicCRM, website form submissions land in a lead inbox, and each contact keeps its relationship history with configurable tags for source and interest. One more thing: resist hoarding. Fields nobody fills in or reads only add risk.
Segmenting First-Party Customer Data Without Being Creepy
Segment on what people told you or did with you directly, and never reveal knowledge they did not knowingly share. For a small B2B firm the useful groupings are stated interest, pipeline stage, industry and time since last contact. I like one simple test here: would the recipient understand why they received this message?
Respect the scope of consent too. Someone who asked for a quote did not necessarily agree to a newsletter. So personalising the customer experience should stay within what each person signed up for.
Once segments exist, tagged contacts can be passed to email campaigns through the Mailcraft integration. Seeing campaign results in one place then shows which groups respond. No cross-site tracking required.
What to Do This Quarter
Don’t go shopping for new tooling. Start with the leads you already receive. A short sequence is enough:
- Audit where enquiries arrive today: forms, inboxes, phone, events.
- Route them into one place.
- Add source and consent fields.
- Review your forms against the steps above.
- Test how your site and ads behave with third-party cookies blocked in Chrome.
Keep retargeting and analytics running, sure. Just stop treating them as the only way to follow up prospects. First-party data built now keeps lead follow-up working as the third-party cookies phase-out progresses. And it stays yours, however any browser timeline unfolds.
FAQ
Are first-party cookies affected by Chrome’s change?
No. The restriction targets third-party cookies, the ones used to recognise a browser across different sites. Cookies set by your own domain for logins and on-site analytics are a different category and are not part of this change.
Do I need consent to store a lead’s details in a CRM?
Under GDPR you need a lawful basis and a clear purpose for holding someone’s details. Replying to an enquiry is one thing. Sending marketing is another, and it usually requires separate agreement. For anything beyond this general picture, ask a legal adviser.
How much first-party data does a small company need?
Less than most owners expect. Contact details, source, stated need and consent status cover the bulk of follow-up work. Add another field only when someone on the team will use it.



