diff --git a/backend/src/main/java/org/cryptomator/hub/api/AuthorityDto.java b/backend/src/main/java/org/cryptomator/hub/api/AuthorityDto.java
index a8018a9d..fbb1d431 100644
--- a/backend/src/main/java/org/cryptomator/hub/api/AuthorityDto.java
+++ b/backend/src/main/java/org/cryptomator/hub/api/AuthorityDto.java
@@ -6,6 +6,18 @@
 
 abstract sealed class AuthorityDto permits UserDto, GroupDto {
 
+	private static final String DEFAULT_USER_DATA_IMAGE = """
+			data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIGNsYXNzPSJoLTUgdy01IiB2aWV3Qm94PSIwIDAgMjAgMjAiIGZpbGw9ImN1cnJlbnRDb2xvciI+CiAgPHJlY3QgeD0iMCIgeT0iMCIgd2lkd\
+			Gg9IjIwIiBoZWlnaHQ9IjIwIiByeD0iMDAiIHJ5PSIwMCIgZmlsbD0id2hpdGUiIC8+CiAgPHBhdGggZmlsbC1ydWxlPSJldmVub2RkIiBkPSJNMTAgOWEzIDMgMCAxMDAtNiAzIDMgMCAwMDAgNnptLTcgOWE3IDcgMCAxMTE0IDBIM3oiIGNsaXAt\
+			cnVsZT0iZXZlbm9kZCIgLz4KPC9zdmc+
+			""";
+	private static final String DEFAULT_GROUP_DATA_IMAGE = """
+			data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIGNsYXNzTmFtZT0iaC01IHctNSIgdmlld0JveD0iMCAwIDIwIDIwIiBmaWxsPSJjdXJyZW50Q29sb3IiPgogIDxyZWN0IHg9IjAiIHk9IjAiI\
+			HdpZHRoPSIyMCIgaGVpZ2h0PSIyMCIgcng9IjAwIiByeT0iMDAiIGZpbGw9IndoaXRlIiAvPgogIDxwYXRoIGQ9Ik0xMyA2YTMgMyAwIDExLTYgMCAzIDMgMCAwMTYgMHpNMTggOGEyIDIgMCAxMS00IDAgMiAyIDAgMDE0IDB6TTE0IDE1YTQgNCAw\
+			IDAwLTggMHYzaDh2LTN6TTYgOGEyIDIgMCAxMS00IDAgMiAyIDAgMDE0IDB6TTE2IDE4di0zYTUuOTcyIDUuOTcyIDAgMDAtLjc1LTIuOTA2QTMuMDA1IDMuMDA1IDAgMDExOSAxNXYzaC0zek00Ljc1IDEyLjA5NEE1Ljk3MyA1Ljk3MyAwIDAwNCA\
+			xNXYzSDF2LTNhMyAzIDAgMDEzLjc1LTIuOTA2eiIgLz4KPC9zdmc+
+			""";
+
 	public enum Type {
 		USER, GROUP
 	}
@@ -27,8 +39,8 @@ protected AuthorityDto(String id, Type type, String name, String pictureUrl) {
 		this.type = type;
 		this.name = name;
 		this.pictureUrl = Objects.requireNonNullElseGet(pictureUrl, () -> switch (type) {
-			case USER -> "/user-icon.svg";
-			case GROUP -> "/group-icon.svg";
+			case USER -> DEFAULT_USER_DATA_IMAGE;
+			case GROUP -> DEFAULT_GROUP_DATA_IMAGE;
 		});
 	}
 
diff --git a/frontend/public/group-icon.svg b/frontend/public/group-icon.svg
deleted file mode 100644
index 64a8f4c7..00000000
--- a/frontend/public/group-icon.svg
+++ /dev/null
@@ -1,4 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" className="h-5 w-5" viewBox="0 0 20 20" fill="currentColor">
-  <rect x="0" y="0" width="20" height="20" rx="00" ry="00" fill="white" />
-  <path d="M13 6a3 3 0 11-6 0 3 3 0 016 0zM18 8a2 2 0 11-4 0 2 2 0 014 0zM14 15a4 4 0 00-8 0v3h8v-3zM6 8a2 2 0 11-4 0 2 2 0 014 0zM16 18v-3a5.972 5.972 0 00-.75-2.906A3.005 3.005 0 0119 15v3h-3zM4.75 12.094A5.973 5.973 0 004 15v3H1v-3a3 3 0 013.75-2.906z" />
-</svg>
\ No newline at end of file
diff --git a/frontend/public/user-icon.svg b/frontend/public/user-icon.svg
deleted file mode 100644
index 705395cb..00000000
--- a/frontend/public/user-icon.svg
+++ /dev/null
@@ -1,4 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" class="h-5 w-5" viewBox="0 0 20 20" fill="currentColor">
-  <rect x="0" y="0" width="20" height="20" rx="00" ry="00" fill="white" />
-  <path fill-rule="evenodd" d="M10 9a3 3 0 100-6 3 3 0 000 6zm-7 9a7 7 0 1114 0H3z" clip-rule="evenodd" />
-</svg>
\ No newline at end of file