diff --git a/modules/magniteAnalyticsAdapter.js b/modules/magniteAnalyticsAdapter.js
index 3b70a51cd68..5cc45e3adbf 100644
--- a/modules/magniteAnalyticsAdapter.js
+++ b/modules/magniteAnalyticsAdapter.js
@@ -46,6 +46,7 @@ const pbsErrorMap = {
   4: 'request-error',
   999: 'generic-error'
 }
+let cookieless;
 
 let prebidGlobal = getGlobal();
 const {
@@ -332,10 +333,14 @@ const getTopLevelDetails = () => {
 
   // Add DM wrapper details
   if (rubiConf.wrapperName) {
+    let rule;
+    if (cookieless) {
+      rule = rubiConf.rule_name ? rubiConf.rule_name.concat('_cookieless') : 'cookieless';
+    }
     payload.wrapper = {
       name: rubiConf.wrapperName,
       family: rubiConf.wrapperFamily,
-      rule: rubiConf.rule_name
+      rule
     }
   }
 
@@ -823,6 +828,15 @@ magniteAdapter.track = ({ eventType, args }) => {
         auctionData.floors = addFloorData(floorData);
       }
 
+      // Identify chrome cookieless trafic
+      if (!cookieless) {
+        const cdep = deepAccess(args, 'bidderRequests.0.ortb2.device.ext.cdep');
+        if (cdep && (cdep.indexOf('treatment') !== -1 || cdep.indexOf('control_2') !== -1)) {
+          cookieless = 1;
+          auctionData.cdep = 1;
+        }
+      }
+
       // GDPR info
       const gdprData = deepAccess(args, 'bidderRequests.0.gdprConsent');
       if (gdprData) {
diff --git a/test/spec/modules/magniteAnalyticsAdapter_spec.js b/test/spec/modules/magniteAnalyticsAdapter_spec.js
index 0dfd6c15ba8..397ee4a8577 100644
--- a/test/spec/modules/magniteAnalyticsAdapter_spec.js
+++ b/test/spec/modules/magniteAnalyticsAdapter_spec.js
@@ -1741,6 +1741,79 @@ describe('magnite analytics adapter', function () {
         expect(message1.bidsWon).to.deep.equal([expectedMessage1]);
       });
     });
+    describe('cookieless', () => {
+      beforeEach(() => {
+        magniteAdapter.enableAnalytics({
+          options: {
+            cookieles: undefined
+          }
+        });
+      })
+      afterEach(() => {
+        magniteAdapter.disableAnalytics();
+      })
+      it('should add sufix _cookieless to the wrapper.rule if ortb2.device.ext.cdep start with "treatment" or  "control_2"', () => {
+        // Set the confs
+        config.setConfig({
+          rubicon: {
+            wrapperName: '1001_general',
+            wrapperFamily: 'general',
+            rule_name: 'desktop-magnite.com',
+          }
+        });
+        const auctionId = MOCK.AUCTION_INIT.auctionId;
+
+        let auctionInit = utils.deepClone(MOCK.AUCTION_INIT);
+        auctionInit.bidderRequests[0].ortb2.device.ext = { cdep: 'treatment' };
+        // Run auction
+        events.emit(AUCTION_INIT, auctionInit);
+        events.emit(BID_REQUESTED, MOCK.BID_REQUESTED);
+        events.emit(BID_RESPONSE, MOCK.BID_RESPONSE);
+        events.emit(BIDDER_DONE, MOCK.BIDDER_DONE);
+        events.emit(AUCTION_END, MOCK.AUCTION_END);
+        [gptSlotRenderEnded0].forEach(gptEvent => mockGpt.emitEvent(gptEvent.eventName, gptEvent.params));
+        events.emit(BID_WON, { ...MOCK.BID_WON, auctionId });
+        clock.tick(rubiConf.analyticsEventDelay);
+        expect(server.requests.length).to.equal(1);
+        let request = server.requests[0];
+        let message = JSON.parse(request.requestBody);
+        expect(message.wrapper).to.deep.equal({
+          name: '1001_general',
+          family: 'general',
+          rule: 'desktop-magnite.com_cookieless',
+        });
+      })
+      it('should add cookieless to the wrapper.rule if ortb2.device.ext.cdep start with "treatment" or  "control_2"', () => {
+        // Set the confs
+        config.setConfig({
+          rubicon: {
+            wrapperName: '1001_general',
+            wrapperFamily: 'general',
+          }
+        });
+        const auctionId = MOCK.AUCTION_INIT.auctionId;
+
+        let auctionInit = utils.deepClone(MOCK.AUCTION_INIT);
+        auctionInit.bidderRequests[0].ortb2.device.ext = { cdep: 'control_2' };
+        // Run auction
+        events.emit(AUCTION_INIT, auctionInit);
+        events.emit(BID_REQUESTED, MOCK.BID_REQUESTED);
+        events.emit(BID_RESPONSE, MOCK.BID_RESPONSE);
+        events.emit(BIDDER_DONE, MOCK.BIDDER_DONE);
+        events.emit(AUCTION_END, MOCK.AUCTION_END);
+        [gptSlotRenderEnded0].forEach(gptEvent => mockGpt.emitEvent(gptEvent.eventName, gptEvent.params));
+        events.emit(BID_WON, { ...MOCK.BID_WON, auctionId });
+        clock.tick(rubiConf.analyticsEventDelay);
+        expect(server.requests.length).to.equal(1);
+        let request = server.requests[0];
+        let message = JSON.parse(request.requestBody);
+        expect(message.wrapper).to.deep.equal({
+          family: 'general',
+          name: '1001_general',
+          rule: 'cookieless',
+        });
+      });
+    });
   });
 
   describe('billing events integration', () => {