diff --git a/packages/frontend/src/components/MkRolePreview.vue b/packages/frontend/src/components/MkRolePreview.vue
index f0343d499b..603c531aa5 100644
--- a/packages/frontend/src/components/MkRolePreview.vue
+++ b/packages/frontend/src/components/MkRolePreview.vue
@@ -12,7 +12,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</template>
 			<template v-else>
 				<i v-if="role.isAdministrator" class="ph-crown ph-bold ph-lg" style="color: var(--accent);"></i>
-				<i v-else-if="role.isModerator" class="ph-shield ph-bold ph-lg" style="color: var(--accent);"></i>
+				<i v-else-if="role.isModerator" class="ti ti-shield" style="color: var(--accent);"></i>
 				<i v-else class="ph-user ph-bold ph-lg" style="opacity: 0.7;"></i>
 			</template>
 		</span>
diff --git a/packages/frontend/src/pages/about.vue b/packages/frontend/src/pages/about.vue
index 23960d39d9..796fd0653d 100644
--- a/packages/frontend/src/pages/about.vue
+++ b/packages/frontend/src/pages/about.vue
@@ -77,7 +77,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 								{{ i18n.ts.termsOfService }}
 							</FormLink>
 							<FormLink v-if="instance.privacyPolicyUrl" :to="instance.privacyPolicyUrl" external>
-								<template #icon><i class="ph-shield ph-bold ph-lg"></i></template>
+								<template #icon><i class="ti ti-shield-lock"></i></template>
 								{{ i18n.ts.privacyPolicy }}
 							</FormLink>
 							<FormLink v-if="instance.feedbackUrl" :to="instance.feedbackUrl" external>
diff --git a/packages/frontend/src/pages/admin/index.vue b/packages/frontend/src/pages/admin/index.vue
index 6d347913fe..6ec949aafe 100644
--- a/packages/frontend/src/pages/admin/index.vue
+++ b/packages/frontend/src/pages/admin/index.vue
@@ -190,7 +190,7 @@ const menuDef = computed(() => [{
 		to: '/admin/branding',
 		active: currentPage.value?.route.name === 'branding',
 	}, {
-		icon: 'ph-shield ph-bold ph-lg',
+		icon: 'ti ti-shield',
 		text: i18n.ts.moderation,
 		to: '/admin/moderation',
 		active: currentPage.value?.route.name === 'moderation',
diff --git a/packages/frontend/src/pages/admin/moderation.vue b/packages/frontend/src/pages/admin/moderation.vue
index dbb0320e28..c19bac8ae2 100644
--- a/packages/frontend/src/pages/admin/moderation.vue
+++ b/packages/frontend/src/pages/admin/moderation.vue
@@ -144,7 +144,7 @@ const headerTabs = computed(() => []);
 
 definePageMetadata(() => ({
 	title: i18n.ts.moderation,
-	icon: 'ph-shield ph-bold ph-lg',
+	icon: 'ti ti-shield',
 }));
 </script>
 
diff --git a/packages/frontend/src/pages/admin/roles.editor.vue b/packages/frontend/src/pages/admin/roles.editor.vue
index 99a31d5157..e47a6e705c 100644
--- a/packages/frontend/src/pages/admin/roles.editor.vue
+++ b/packages/frontend/src/pages/admin/roles.editor.vue
@@ -31,7 +31,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	</MkInput>
 
 	<MkSelect v-model="rolePermission" :readonly="readonly">
-		<template #label><i class="ph-shield ph-bold ph-lg-lock"></i> {{ i18n.ts._role.permission }}</template>
+		<template #label><i class="ti ti-shield-lock"></i> {{ i18n.ts._role.permission }}</template>
 		<template #caption><div v-html="i18n.ts._role.descriptionOfPermission.replaceAll('\n', '<br>')"></div></template>
 		<option value="normal">{{ i18n.ts.normalUser }}</option>
 		<option value="moderator">{{ i18n.ts.moderator }}</option>
diff --git a/packages/frontend/src/pages/admin/security.vue b/packages/frontend/src/pages/admin/security.vue
index 97e3a09403..4b742820c7 100644
--- a/packages/frontend/src/pages/admin/security.vue
+++ b/packages/frontend/src/pages/admin/security.vue
@@ -10,7 +10,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<FormSuspense :p="init">
 			<div class="_gaps_m">
 				<MkFolder>
-					<template #icon><i class="ph-shield ph-bold ph-lg"></i></template>
+					<template #icon><i class="ti ti-shield"></i></template>
 					<template #label>{{ i18n.ts.botProtection }}</template>
 					<template v-if="enableHcaptcha" #suffix>hCaptcha</template>
 					<template v-else-if="enableMcaptcha" #suffix>mCaptcha</template>
diff --git a/packages/frontend/src/pages/settings/2fa.vue b/packages/frontend/src/pages/settings/2fa.vue
index 10a7182269..0573e9d3b6 100644
--- a/packages/frontend/src/pages/settings/2fa.vue
+++ b/packages/frontend/src/pages/settings/2fa.vue
@@ -16,7 +16,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		</MkInfo>
 
 		<MkFolder :defaultOpen="true">
-			<template #icon><i class="ph-shield ph-bold ph-lg-lock"></i></template>
+			<template #icon><i class="ti ti-shield-lock"></i></template>
 			<template #label>{{ i18n.ts.totp }}</template>
 			<template #caption>{{ i18n.ts.totpDescription }}</template>
 			<template #suffix><i v-if="$i.twoFactorEnabled" class="ti ti-check" style="color: var(--success)"></i></template>
diff --git a/packages/frontend/src/pages/user/home.vue b/packages/frontend/src/pages/user/home.vue
index 2dde798294..6501e3d7b8 100644
--- a/packages/frontend/src/pages/user/home.vue
+++ b/packages/frontend/src/pages/user/home.vue
@@ -22,7 +22,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 							<MkUserName class="name" :user="user" :nowrap="true"/>
 							<div class="bottom">
 								<span class="username"><MkAcct :user="user" :detail="true"/></span>
-								<span v-if="user.isAdmin" :title="i18n.ts.isAdmin" style="color: var(--badge);"><i class="ph-shield ph-bold ph-lg"></i></span>
+								<span v-if="user.isAdmin" :title="i18n.ts.isAdmin" style="color: var(--badge);"><i class="ti ti-shield"></i></span>
 								<span v-if="user.isLocked" :title="i18n.ts.isLocked"><i class="ph-lock ph-bold ph-lg"></i></span>
 								<span v-if="user.isBot" :title="i18n.ts.isBot"><i class="ph-robot ph-bold ph-lg"></i></span>
 								<button v-if="$i && !isEditingMemo && !memoDraft" class="_button add-note-button" @click="showMemoTextarea">
@@ -41,7 +41,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 						<MkUserName :user="user" :nowrap="false" class="name"/>
 						<div class="bottom">
 							<span class="username"><MkAcct :user="user" :detail="true"/></span>
-							<span v-if="user.isAdmin" :title="i18n.ts.isAdmin" style="color: var(--badge);"><i class="ph-shield ph-bold ph-lg"></i></span>
+							<span v-if="user.isAdmin" :title="i18n.ts.isAdmin" style="color: var(--badge);"><i class="ti ti-shield"></i></span>
 							<span v-if="user.isLocked" :title="i18n.ts.isLocked"><i class="ph-lock ph-bold ph-lg"></i></span>
 							<span v-if="user.isBot" :title="i18n.ts.isBot"><i class="ph-robot ph-bold ph-lg"></i></span>
 						</div>
diff --git a/packages/frontend/src/ui/_common_/common.ts b/packages/frontend/src/ui/_common_/common.ts
index 1a8fab3b1f..9b3ae6b3a8 100644
--- a/packages/frontend/src/ui/_common_/common.ts
+++ b/packages/frontend/src/ui/_common_/common.ts
@@ -98,7 +98,7 @@ export function openInstanceMenu(ev: MouseEvent) {
 		},
 	} : undefined, (instance.privacyPolicyUrl) ? {
 		text: i18n.ts.privacyPolicy,
-		icon: 'ph-shield ph-bold ph-lg',
+		icon: 'ti ti-shield-lock',
 		action: () => {
 			window.open(instance.privacyPolicyUrl, '_blank', 'noopener');
 		},
diff --git a/packages/frontend/vite.config.ts b/packages/frontend/vite.config.ts
index c8ceeccf37..cca22d568c 100644
--- a/packages/frontend/vite.config.ts
+++ b/packages/frontend/vite.config.ts
@@ -87,6 +87,8 @@ export function getConfig(): UserConfig {
 					'ti ti-dots': 'ph-dots-three ph-bold ph-lg',
 					'ti ti-check': 'ph-check ph-bold ph-lg',
 					'ti ti-device-floppy': 'ph-floppy-disk ph-bold ph-lg',
+					'ti ti-shield': 'ph-shield ph-bold ph-lg',
+					'ti ti-shield-lock': 'ph-shield ph-bold ph-lg',
 				},
 			}),
 			...process.env.NODE_ENV === 'production'