diff --git a/app/components/ConfirmModal.vue b/app/components/ConfirmModal.vue
new file mode 100644
index 0000000..f5f4e4b
--- /dev/null
+++ b/app/components/ConfirmModal.vue
@@ -0,0 +1,22 @@
+<script setup lang="ts">
+defineProps<{
+  title: string;
+  description?: string;
+}>();
+
+const emit = defineEmits<{ close: [confirmed: boolean] }>();
+</script>
+
+<template>
+  <UModal :title="title">
+    <template #body>
+      <p v-if="description" class="text-sm text-muted">{{ description }}</p>
+    </template>
+    <template #footer>
+      <div class="flex gap-2 justify-end w-full">
+        <UButton variant="ghost" color="neutral" @click="emit('close', false)">Cancel</UButton>
+        <UButton color="error" @click="emit('close', true)">Delete</UButton>
+      </div>
+    </template>
+  </UModal>
+</template>
diff --git a/app/components/LinkModal.vue b/app/components/LinkModal.vue
index 5892d91..3bbb32e 100644
--- a/app/components/LinkModal.vue
+++ b/app/components/LinkModal.vue
@@ -8,7 +8,7 @@ const props = defineProps<{
 
 const schema = z.object({
   name: z.string({ error: "Required" }),
-  path: z.string({ error: "Required" }),
+  path: z.string({ error: "Required" }).startsWith("/", "Must start with /"),
   url: z.url({ error: (err) => err.code === "invalid_type" ? "Required" : "Invalid format", }),
   disabled: z.boolean().optional(),
 });
diff --git a/app/pages/dashboard.vue b/app/pages/dashboard.vue
index 73b285c..9e0b125 100644
--- a/app/pages/dashboard.vue
+++ b/app/pages/dashboard.vue
@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { LazyLinkModal } from "#components";
+import { LazyLinkModal, LazyConfirmModal } from "#components";
 
 definePageMeta({ middleware: "auth" });
 
@@ -37,14 +37,18 @@ const openModal = async (link: Link | null) => {
 }
 
 const deleteLink = async (link: Link) => {
+  const modal = overlay.create(LazyConfirmModal, { destroyOnClose: true });
+  const instance = modal.open({ title: "Delete link", description: `Are you sure you want to delete "${link.name}"?` });
+  if (!await instance.result) return;
+
   try {
     await $fetch(`/api/links/${link.id}`, { method: "DELETE" });
     toast.add({ title: "Link deleted", color: "success" });
     await refresh();
-  } catch {
-    toast.add({ title: "Failed to delete link", color: "error" });
+  } catch (error) {
+    toast.add({ title: getApiError(error), color: "error" });
   }
-}
+};
 
 </script>
 
diff --git a/server/api/auth/sign-in.post.ts b/server/api/auth/sign-in.post.ts
index 77ea2d0..d48dea7 100644
--- a/server/api/auth/sign-in.post.ts
+++ b/server/api/auth/sign-in.post.ts
@@ -1,3 +1,4 @@
+import { timingSafeEqual } from "node:crypto";
 import { z } from "zod";
 import { env } from "#server/env";
 
@@ -6,10 +7,44 @@ const bodySchema = z.object({
   password: z.string(),
 });
 
+const attempts = new Map<string, { count: number; resetAt: number }>();
+const MAX_ATTEMPTS = 10;
+const WINDOW_MS = 60_000;
+
+const isRateLimited = (ip: string): boolean => {
+  const now = Date.now();
+  const entry = attempts.get(ip);
+
+  if (!entry || now > entry.resetAt) {
+    attempts.set(ip, { count: 1, resetAt: now + WINDOW_MS });
+    return false;
+  }
+
+  if (entry.count >= MAX_ATTEMPTS) return true;
+  entry.count++;
+  return false;
+};
+
+const safeEqual = (a: string, b: string): boolean => {
+  const aBuf = Buffer.from(a);
+  const bBuf = Buffer.from(b);
+  if (aBuf.length !== bBuf.length) {
+    timingSafeEqual(aBuf, aBuf);
+    return false;
+  }
+  return timingSafeEqual(aBuf, bBuf);
+};
+
 export default defineEventHandler(async (event) => {
+  const ip = getRequestIP(event) ?? "unknown";
+  if (isRateLimited(ip)) {
+    throw createError({ statusCode: 429, message: "Too many attempts, try again later" });
+  }
+
   const body = await readValidatedBody(event, bodySchema.parse);
 
-  if (body.username !== env.ADMIN_USERNAME || body.password !== env.ADMIN_PASSWORD) {
+  const valid = safeEqual(body.username, env.ADMIN_USERNAME) && safeEqual(body.password, env.ADMIN_PASSWORD);
+  if (!valid) {
     throw createError({ statusCode: 401, message: "Invalid credentials" });
   }
 
diff --git a/server/api/links/[id]/index.patch.ts b/server/api/links/[id]/index.patch.ts
index 3634b81..22e2caa 100644
--- a/server/api/links/[id]/index.patch.ts
+++ b/server/api/links/[id]/index.patch.ts
@@ -7,12 +7,16 @@ const paramsSchema = z.object({
   id: z.string().transform(Number),
 });
 
-const bodySchema = z.object({
-  name: z.string().min(1).optional(),
-  path: z.string().min(1).optional(),
-  url: z.url().optional(),
-  disabled: z.boolean().optional(),
-});
+const bodySchema = z
+  .object({
+    name: z.string().min(1).optional(),
+    path: z.string().min(1).startsWith("/").optional(),
+    url: z.url().optional(),
+    disabled: z.boolean().optional(),
+  })
+  .refine((data) => Object.values(data).some((v) => v !== undefined), {
+    message: "At least one field must be provided",
+  });
 
 export default defineEventHandler(async (event) => {
   const params = await getValidatedRouterParams(event, paramsSchema.parse);
diff --git a/server/api/links/index.post.ts b/server/api/links/index.post.ts
index f8951da..c6e9931 100644
--- a/server/api/links/index.post.ts
+++ b/server/api/links/index.post.ts
@@ -4,7 +4,7 @@ import { z } from "zod";
 
 const bodySchema = z.object({
   name: z.string().min(1),
-  path: z.string().min(1),
+  path: z.string().min(1).startsWith("/"),
   url: z.url(),
   disabled: z.boolean().optional(),
 });
diff --git a/server/db/schema.ts b/server/db/schema.ts
index 39c6f8f..8bb107d 100644
--- a/server/db/schema.ts
+++ b/server/db/schema.ts
@@ -4,6 +4,6 @@ export const links = sqliteTable("links", {
   id: integer("id").primaryKey({ autoIncrement: true }),
   name: text("name").notNull().unique(),
   path: text("path").notNull().unique(),
-  url: text("url").notNull().unique(),
+  url: text("url").notNull(),
   disabled: integer("disabled", { mode: "boolean" }).notNull().default(false),
 });
diff --git a/server/utils/links.ts b/server/utils/links.ts
index 6d75124..9b2c33e 100644
--- a/server/utils/links.ts
+++ b/server/utils/links.ts
@@ -2,7 +2,7 @@ import { db } from "#server/db";
 import * as tables from "#server/db/schema";
 import { and, eq, ne } from "drizzle-orm";
 
-const UNIQUE_FIELDS = ["name", "path", "url"] as const;
+const UNIQUE_FIELDS = ["name", "path"] as const;
 type UniqueField = (typeof UNIQUE_FIELDS)[number];
 
 export const joinFields = (fields: string[]): string => {