diff --git a/src/controllers/api/accounts.ts b/src/controllers/api/accounts.ts
index 1ae6a4f6..d5beac03 100644
--- a/src/controllers/api/accounts.ts
+++ b/src/controllers/api/accounts.ts
@@ -9,7 +9,7 @@ import { booleanParamSchema, fileSchema } from '@/schema.ts';
 import { Storages } from '@/storages.ts';
 import { uploadFile } from '@/utils/upload.ts';
 import { nostrNow } from '@/utils.ts';
-import { createEvent, paginated, parseBody, updateEvent, updateListEvent } from '@/utils/api.ts';
+import { assertAuthenticated, createEvent, paginated, parseBody, updateEvent, updateListEvent } from '@/utils/api.ts';
 import { extractIdentifier, lookupAccount, lookupPubkey } from '@/utils/lookup.ts';
 import { renderAccounts, renderEventAccounts, renderStatuses } from '@/views.ts';
 import { accountFromPubkey, renderAccount } from '@/views/mastodon/accounts.ts';
@@ -82,6 +82,7 @@ const accountController: AppController = async (c) => {
 
   const event = await getAuthor(pubkey);
   if (event) {
+    assertAuthenticated(c, event);
     return c.json(await renderAccount(event));
   } else {
     return c.json(await accountFromPubkey(pubkey));
@@ -97,6 +98,7 @@ const accountLookupController: AppController = async (c) => {
 
   const event = await lookupAccount(decodeURIComponent(acct));
   if (event) {
+    assertAuthenticated(c, event);
     return c.json(await renderAccount(event));
   }
   try {
@@ -204,7 +206,15 @@ const accountStatusesController: AppController = async (c) => {
 
   const store = await Storages.db();
 
-  const [user] = await store.query([{ kinds: [30382], authors: [Conf.pubkey], '#d': [pubkey], limit: 1 }], { signal });
+  const [[author], [user]] = await Promise.all([
+    store.query([{ kinds: [0], authors: [pubkey], limit: 1 }], { signal }),
+    store.query([{ kinds: [30382], authors: [Conf.pubkey], '#d': [pubkey], limit: 1 }], { signal }),
+  ]);
+
+  if (author) {
+    assertAuthenticated(c, author);
+  }
+
   const names = getTagSet(user?.tags ?? [], 'n');
 
   if (names.has('disabled')) {
diff --git a/src/controllers/api/statuses.ts b/src/controllers/api/statuses.ts
index 8e66f7cb..98337777 100644
--- a/src/controllers/api/statuses.ts
+++ b/src/controllers/api/statuses.ts
@@ -16,7 +16,7 @@ import { lookupPubkey } from '@/utils/lookup.ts';
 import { languageSchema } from '@/schema.ts';
 import { Storages } from '@/storages.ts';
 import { hydrateEvents } from '@/storages/hydrate.ts';
-import { createEvent, paginated, paginatedList, parseBody, updateListEvent } from '@/utils/api.ts';
+import { assertAuthenticated, createEvent, paginated, paginatedList, parseBody, updateListEvent } from '@/utils/api.ts';
 import { getInvoice, getLnurl } from '@/utils/lnurl.ts';
 import { purifyEvent } from '@/utils/purify.ts';
 import { getZapSplits } from '@/utils/zap-split.ts';
@@ -48,13 +48,18 @@ const createStatusSchema = z.object({
 
 const statusController: AppController = async (c) => {
   const id = c.req.param('id');
+  const signal = AbortSignal.any([c.req.raw.signal, AbortSignal.timeout(1500)]);
 
-  const event = await getEvent(id, {
-    signal: AbortSignal.timeout(1500),
-  });
+  const event = await getEvent(id, { signal });
+
+  if (event?.author) {
+    assertAuthenticated(c, event.author);
+  }
 
   if (event) {
-    return c.json(await renderStatus(event, { viewerPubkey: await c.get('signer')?.getPublicKey() }));
+    const viewerPubkey = await c.get('signer')?.getPublicKey();
+    const status = await renderStatus(event, { viewerPubkey });
+    return c.json(status);
   }
 
   return c.json({ error: 'Event not found.' }, 404);
diff --git a/src/utils/api.ts b/src/utils/api.ts
index 829a2cce..e47779d2 100644
--- a/src/utils/api.ts
+++ b/src/utils/api.ts
@@ -286,8 +286,22 @@ function localRequest(c: Context): Request {
   });
 }
 
+/** Actors with Bluesky's `!no-unauthenticated` self-label should require authorization to view. */
+function assertAuthenticated(c: AppContext, author: NostrEvent): void {
+  if (
+    !c.get('signer') && author.tags.some(([name, value, ns]) =>
+      name === 'l' &&
+      value === '!no-unauthenticated' &&
+      ns === 'com.atproto.label.defs#selfLabels'
+    )
+  ) {
+    throw new HTTPException(401, { message: 'Sign-in required.' });
+  }
+}
+
 export {
   activityJson,
+  assertAuthenticated,
   createAdminEvent,
   createEvent,
   type EventStub,