diff --git a/src/components/home/contentLinkShare.vue b/src/components/home/contentLinkShare.vue
index 601f17d87..f6fa8288d 100644
--- a/src/components/home/contentLinkShare.vue
+++ b/src/components/home/contentLinkShare.vue
@@ -14,7 +14,7 @@
 				</h1>
 				<div class="box has-text-left view">
 					<router-view/>
-					<a class="menu-bottom-link" href="https://vikunja.io" target="_blank">
+					<a class="menu-bottom-link" href="https://vikunja.io" target="_blank" rel="noreferrer noopener nofollow">
 						{{ $t('misc.poweredBy') }}
 					</a>
 				</div>
diff --git a/src/components/home/navigation.vue b/src/components/home/navigation.vue
index 1fd3271de..9c73eec8f 100644
--- a/src/components/home/navigation.vue
+++ b/src/components/home/navigation.vue
@@ -130,7 +130,7 @@
 				</div>
 			</template>
 		</aside>
-		<a class="menu-bottom-link" href="https://vikunja.io" target="_blank">
+		<a class="menu-bottom-link" href="https://vikunja.io" target="_blank" rel="noreferrer noopener nofollow">
 			{{ $t('misc.poweredBy') }}
 		</a>
 	</div>
diff --git a/src/components/home/topNavigation.vue b/src/components/home/topNavigation.vue
index 6503dd567..5b518a59f 100644
--- a/src/components/home/topNavigation.vue
+++ b/src/components/home/topNavigation.vue
@@ -67,6 +67,7 @@
 						:href="imprintUrl"
 						class="dropdown-item"
 						target="_blank"
+						rel="noreferrer noopener nofollow"
 						v-if="imprintUrl">
 						{{ $t('navigation.imprint') }}
 					</a>
@@ -74,6 +75,7 @@
 						:href="privacyPolicyUrl"
 						class="dropdown-item"
 						target="_blank"
+						rel="noreferrer noopener nofollow"
 						v-if="privacyPolicyUrl">
 						{{ $t('navigation.privacy') }}
 					</a>
diff --git a/src/components/misc/error.vue b/src/components/misc/error.vue
index c4b5c4967..56b73b4a2 100644
--- a/src/components/misc/error.vue
+++ b/src/components/misc/error.vue
@@ -2,7 +2,7 @@
 	<div class="notification is-danger">
 		<i18n path="loadingError.failed">
 			<a @click="() => location.reload()">{{ $t('loadingError.tryAgain') }}</a>
-			<a href="https://vikunja.io/contact/">{{ $t('loadingError.contact') }}</a>
+			<a href="https://vikunja.io/contact/" rel="noreferrer noopener nofollow" target="_blank">{{ $t('loadingError.contact') }}</a>
 		</i18n>
 	</div>
 </template>
diff --git a/src/views/list/settings/background.vue b/src/views/list/settings/background.vue
index 4b0908287..060322c0e 100644
--- a/src/views/list/settings/background.vue
+++ b/src/views/list/settings/background.vue
@@ -35,7 +35,7 @@
 				v-model="backgroundSearchTerm"
 			/>
 			<p class="unsplash-link">
-				<a href="https://unsplash.com" target="_blank">{{ $t('list.background.poweredByUnsplash') }}</a>
+				<a href="https://unsplash.com" rel="noreferrer noopener nofollow" target="_blank">{{ $t('list.background.poweredByUnsplash') }}</a>
 			</p>
 			<div class="image-search-result">
 				<a
@@ -44,7 +44,7 @@
 					@click="() => setBackground(im.id)"
 					class="image"
 					v-for="im in backgroundSearchResult">
-					<a :href="`https://unsplash.com/@${im.info.author}`" target="_blank" class="info">
+					<a :href="`https://unsplash.com/@${im.info.author}`" rel="noreferrer noopener nofollow" target="_blank" class="info">
 						{{ im.info.authorName }}
 					</a>
 				</a>
diff --git a/src/views/user/Settings.vue b/src/views/user/Settings.vue
index 86132f0bf..a3f4bc2a4 100644
--- a/src/views/user/Settings.vue
+++ b/src/views/user/Settings.vue
@@ -264,7 +264,7 @@
 				</div>
 			</div>
 			<p>
-				<a href="https://vikunja.io/docs/caldav/" target="_blank">
+				<a href="https://vikunja.io/docs/caldav/" rel="noreferrer noopener nofollow" target="_blank">
 					{{ $t('user.settings.caldav.more') }}
 				</a>
 			</p>