diff --git a/Build/constants/reject-data-source.ts b/Build/constants/reject-data-source.ts
index 033c0fdb..1bf536a6 100644
--- a/Build/constants/reject-data-source.ts
+++ b/Build/constants/reject-data-source.ts
@@ -533,6 +533,7 @@ export const PREDEFINED_WHITELIST = [
   'cuty.io', // short domain like bitly, blocked by phishing army
   'links.strava.com', // AdGuard CNAME Clickthrough Filters
   'email.strava.com', // EasyList
+  'insideruser.microsoft.com', // WindowsSpyBlocker
 
   // Doesn't make sense: CNAME domains
   '.cdn.cloudflare.net',
diff --git a/Source/domainset/reject.conf b/Source/domainset/reject.conf
index 60d0ef25..7dc14279 100644
--- a/Source/domainset/reject.conf
+++ b/Source/domainset/reject.conf
@@ -955,6 +955,7 @@ stats.crdroid.net
 cdn.matomo.cloud
 stats.adityathebe.com
 udata.namespace.so
+crashstats-collector-2.opera.com
 
 # CNAME: dualstack.beaconserver-ce-vpc0-1537565064.eu-west-1.elb.amazonaws.com
 # note "beaconserver"