diff --git a/lib/decorators/EventPropertiesDecorator.hpp b/lib/decorators/EventPropertiesDecorator.hpp
index 103c11553..dfb4d6b27 100644
--- a/lib/decorators/EventPropertiesDecorator.hpp
+++ b/lib/decorators/EventPropertiesDecorator.hpp
@@ -24,6 +24,7 @@ namespace MAT_NS_BEGIN {
 #define RECORD_FLAGS_EVENTTAG_HASH_PII 0x00100000
 // #define MICROSOFT_EVENTTAG_DROP_PII 0x02000000
 #define RECORD_FLAGS_EVENTTAG_DROP_PII 0x00200000
+#define RECORD_FLAGS_EVENTTAG_SCRUB_IP 0x00400000
 
     class EventPropertiesDecorator : public IDecorator
     {
@@ -125,6 +126,8 @@ namespace MAT_NS_BEGIN {
             int64_t tags = eventProperties.GetPolicyBitFlags();
             int64_t flags = 0;
 
+            // Scrub/obfuscate IP addresses.
+            flags = RECORD_FLAGS_EVENTTAG_SCRUB_IP;
             // We must remap from one bitfield set to another, no way to bit-shift :(
             // At the moment 1DS SDK in direct upload mode supports DROP and MARK tags only:
             flags |= (tags & MICROSOFT_EVENTTAG_MARK_PII) ? RECORD_FLAGS_EVENTTAG_MARK_PII : 0;