diff --git a/package.json b/package.json
index 770c4bf..bf8cc68 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,8 @@
     "docs": "npx jsdoc2md -c .jsdoc.json --files 'src/*.js'  > docs/API.md",
     "semantic-release": "semantic-release",
     "semantic-release-dry": "semantic-release --dry-run --branches $CI_BRANCH 1.x main",
-    "prepare": "husky install"
+    "prepare": "husky install",
+    "generate-bloom-filter": "node test/generateAcquisitionBloomFilters.js"
   },
   "repository": {
     "type": "git",
diff --git a/src/index.js b/src/index.js
index 96f6733..2c73368 100644
--- a/src/index.js
+++ b/src/index.js
@@ -11,10 +11,12 @@
  */
 const { sampleRUM } = window.hlx.rum;
 
+const basicHash = (string, modulo) => Array.from(string)
+  .map((a) => a.charCodeAt(0))
+  .reduce((a, b) => a + b, 1) % modulo;
+
 const fflags = {
-  has: (flag) => fflags[flag].indexOf(Array.from(window.origin)
-    .map((a) => a.charCodeAt(0))
-    .reduce((a, b) => a + b, 1) % 1371) !== -1,
+  has: (flag) => fflags[flag].indexOf(basicHash(window.origin, 1371)) !== -1,
   enabled: (flag, callback) => fflags.has(flag) && callback(),
   disabled: (flag, callback) => !fflags.has(flag) && callback(),
   onetrust: [543, 770, 1136],
@@ -269,3 +271,48 @@ fflags.enabled('email', () => {
     params.filter((param) => regex.test(param)).forEach((param) => sampleRUM('email', { source: network, target: param }));
   });
 });
+
+// acquisition checkpoint
+(() => {
+  const sanitize = (str) => (str || '').toLowerCase().replace(/[^a-zA-Z0-9]/, '');
+  const toBinary = (s) => Array.from(s, (c) => parseInt(c, 16).toString(2).padStart(4, '0')).join('');
+  const moduli = [239, 241, 251]; // prime numbers smaller than 256
+  const knownVendors = toBinary('fbdef75ff9f4dedbfdeaba8f21e7884aebf67cfde6eefeea3b8ff32c6fb68a40'); // known vendors bloom filter
+  const categories = {
+    affiliate: ['aff', 'affiliate', 'affiliatemarketing'],
+    audio: ['spotify'],
+    brand: ['brand'],
+    display: ['advertorial', 'banner', 'cpa', 'cpc', 'cpm', 'cpv', 'discover', 'display', 'fbads', 'goppc', 'highimpact', 'inred', 'nps', 'paid', 'paiddisplay', 'placement', 'post', 'poster', 'pp', 'ppc'],
+    email: ['em', 'email', 'mail', 'newsletter'],
+    local: ['yext'],
+    owned: ['owned'],
+    qr: ['qr', 'qrcode'],
+    search: ['direct', 'google', 'googleflights', 'paidsearch', 'paidsearchnb', 'sea', 'sem'],
+    sms: ['sms'],
+    social: ['facebook', 'gnews', 'instagramfeed', 'instagramreels', 'instagramstories', 'line', 'linkedin', 'metasearch', 'organicsocialown', 'paidsocial', 'social', 'sociallinkedin', 'socialpaid'],
+    video: ['native', 'paidvideo', 'pvid', 'video', 'youtube'],
+    web: ['webapp'],
+  };
+  const sources = {
+    paid: ['affiliate', 'audio', 'display', 'local', 'search', 'social', 'video'],
+    owned: ['brand', 'email', 'owned', 'qr', 'sms', 'web'],
+  };
+  // these 'vendors' appear differently in the utmsource field. They are mapped to a single value:
+  const vendorMappings = [
+    { regex: /newsshowcase|aci|google|googleads|gads|google-ads|google_search|google_deman|aw|adwords|dv360|gdn|doubleclick|dbm|gmb/i, result: 'google' },
+    { regex: /instagram|ig/i, result: 'instagram' },
+    { regex: /face|fb|meta/i, result: 'facebook' },
+    { regex: /email/i, result: 'email' },
+    { regex: /bing/i, result: 'bing' },
+    { regex: /amazon|ctv/i, result: 'amazon' },
+    { regex: /qr/i, result: 'qrcode' },
+    { regex: /youtube|yt/i, result: 'youtube' },
+  ];
+  const utmMedium = sanitize(new URLSearchParams(window.location.search).get('utm_medium'));
+  const utmSource = sanitize(new URLSearchParams(window.location.search).get('utm_source'));
+  const preVendor = vendorMappings.find(({ regex }) => regex.test(utmSource))?.result || utmSource;
+  const category = Object.keys(categories).find((key) => (categories[key] || []).includes(utmMedium)) || '';
+  const source = Object.keys(sources).find((key) => (sources[key] || []).includes(category)) || '';
+  const vendor = moduli.every((modulo) => knownVendors.charAt(basicHash(preVendor, modulo)) === '1') ? preVendor : '';
+  sampleRUM('acquisition', { source: `${source}:${category}:${vendor}` });
+})();
diff --git a/test/generateAcquisitionBloomFilters.js b/test/generateAcquisitionBloomFilters.js
new file mode 100644
index 0000000..af90316
--- /dev/null
+++ b/test/generateAcquisitionBloomFilters.js
@@ -0,0 +1,138 @@
+/*
+ * Copyright 2024 Adobe. All rights reserved.
+ * This file is licensed to you under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License. You may obtain a copy
+ * of the License at http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under
+ * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
+ * OF ANY KIND, either express or implied. See the License for the specific language
+ * governing permissions and limitations under the License.
+ */
+
+const moduli = [239, 241, 251];
+
+const basicHash = (string, modulo) => Array.from(string)
+  .map((a) => a.charCodeAt(0))
+  .reduce((a, b) => a + b, 1) % modulo;
+
+const binaryToText = (binaryString) => {
+  return parseInt(binaryString, 2).toString(16);
+};
+
+// known vendors
+const vendors = [
+  'adlocus',
+  'admitadmonetize',
+  'aftership',
+  'amazon',
+  'attentive',
+  'avivid',
+  'baidu',
+  'banner',
+  'bing',
+  'blis',
+  'cheetah',
+  'cj',
+  'clarin',
+  'clm',
+  'criteo',
+  'demandgen',
+  'digidip',
+  'digitalremedycom',
+  'discovery',
+  'display',
+  'eloqua',
+  'email',
+  'eminent',
+  'facebook',
+  'famoussmokeshopinc',
+  'fark',
+  'fashionistatop',
+  'feedotter',
+  'flipboard',
+  'flyer',
+  'geniusmonkey',
+  'giftcardmall',
+  'google',
+  'hotstar',
+  'hrs',
+  'hsemail',
+  'inmobicom',
+  'inred',
+  'insider',
+  'instagram',
+  'integrateddisplay',
+  'internal',
+  'line',
+  'linkbux',
+  'linkedin',
+  'linkinbio',
+  'locationpage',
+  'lveng',
+  'm2trans',
+  'manutd',
+  'marketo',
+  'massiva',
+  'mavenintent',
+  'mediamond',
+  'mentionme',
+  'microsoft',
+  'native',
+  'newsletter',
+  'nexus',
+  'openweb',
+  'optum',
+  'outbrain',
+  'outlook',
+  'partner',
+  'partnerstudentbeanscom',
+  'petcademy',
+  'pinterest',
+  'pmax',
+  'programmatic',
+  'programmaticgdn',
+  'pushly',
+  'qrcode',
+  'reddit',
+  'redone',
+  'retailercode',
+  'seznam',
+  'shopfully',
+  'silverpop',
+  'sky',
+  'skyscanner',
+  'snapchat',
+  'spotify',
+  'substack',
+  'taboola',
+  'teads',
+  'thetradedesk',
+  'tiktok',
+  'tradedesk',
+  'tradetracker',
+  'twitter',
+  'web',
+  'yahoo',
+  'yandex',
+  'yext',
+  'yieldkit',
+  'youtube',
+];
+
+// Initialize 256 chars long array filled with initial zeros
+const bloomFilter = new Array(256).fill(0);
+
+// Insert each vendor into the Bloom filter
+vendors.forEach((vendor) => {
+  moduli.forEach((modulo) => {
+    const hash = basicHash(vendor, modulo);
+    bloomFilter[hash] = 1;
+  });
+});
+
+const f = bloomFilter.reduce((acc, _, index) => (index % 4 === 0 ? [...acc, bloomFilter.slice(index, index + 4).join('')] : acc), [])
+  .map((binaryChar) => binaryToText(binaryChar))
+  .join('');
+
+console.log(`Bloom Filter: ${f}`);