diff --git a/src/components/Note/Poll.tsx b/src/components/Note/Poll.tsx
index ad834f6..26ceb36 100644
--- a/src/components/Note/Poll.tsx
+++ b/src/components/Note/Poll.tsx
@@ -1,5 +1,5 @@
 import { Button } from '@/components/ui/button'
-import { POLL_TYPE } from '@/constants'
+import { BIG_RELAY_URLS, POLL_TYPE } from '@/constants'
 import { useTranslatedEvent } from '@/hooks'
 import { useFetchPollResults } from '@/hooks/useFetchPollResults'
 import { createPollResponseDraftEvent } from '@/lib/draft-event'
@@ -253,9 +253,9 @@ export default function Poll({ event, className }: { event: Event; className?: s
 
 async function ensurePollRelays(creator: string, poll: { relayUrls: string[] }) {
   const relays = poll.relayUrls.slice(0, 4)
+  // Privacy: Use defaults instead of fetching creator's relays
   if (!relays.length) {
-    const relayList = await client.fetchRelayList(creator)
-    relays.push(...relayList.read.slice(0, 4))
+    relays.push(...BIG_RELAY_URLS.slice(0, 4))
   }
   return relays
 }
diff --git a/src/components/NoteStats/LikeButton.tsx b/src/components/NoteStats/LikeButton.tsx
index 9a91a79..3048583 100644
--- a/src/components/NoteStats/LikeButton.tsx
+++ b/src/components/NoteStats/LikeButton.tsx
@@ -80,8 +80,7 @@ export default function LikeButton({ event }: { event: Event }) {
         }
 
         const reaction = createReactionDraftEvent(event, emoji)
-        const seenOn = client.getSeenEventRelayUrls(event.id)
-        const evt = await publish(reaction, { additionalRelayUrls: seenOn })
+        const evt = await publish(reaction)
         noteStatsService.updateNoteStatsByEvents([evt])
       } catch (error) {
         console.error('like failed', error)
diff --git a/src/components/NoteStats/Likes.tsx b/src/components/NoteStats/Likes.tsx
index 87143f5..0eb1dd7 100644
--- a/src/components/NoteStats/Likes.tsx
+++ b/src/components/NoteStats/Likes.tsx
@@ -45,8 +45,7 @@ export default function Likes({ event }: { event: Event }) {
 
       try {
         const reaction = createReactionDraftEvent(event, emoji)
-        const seenOn = client.getSeenEventRelayUrls(event.id)
-        const evt = await publish(reaction, { additionalRelayUrls: seenOn })
+        const evt = await publish(reaction)
         noteStatsService.updateNoteStatsByEvents([evt])
       } catch (error) {
         console.error('like failed', error)
diff --git a/src/components/NoteStats/VoteButtons.tsx b/src/components/NoteStats/VoteButtons.tsx
index fa7eb7f..49799f4 100644
--- a/src/components/NoteStats/VoteButtons.tsx
+++ b/src/components/NoteStats/VoteButtons.tsx
@@ -61,22 +61,19 @@ export default function VoteButtons({ event }: { event: Event }) {
         if (existingVote) {
           // Remove vote by creating a reaction with the same emoji (this will toggle it off)
           const reaction = createReactionDraftEvent(event, emoji)
-          const seenOn = client.getSeenEventRelayUrls(event.id)
-          const evt = await publish(reaction, { additionalRelayUrls: seenOn })
+          const evt = await publish(reaction)
           noteStatsService.updateNoteStatsByEvents([evt])
         } else {
           // If user voted the opposite way, first remove the old vote
           if (userVote) {
             const oldEmoji = userVote === 'up' ? '⬆️' : '⬇️'
             const removeReaction = createReactionDraftEvent(event, oldEmoji)
-            const seenOn = client.getSeenEventRelayUrls(event.id)
-            await publish(removeReaction, { additionalRelayUrls: seenOn })
+            await publish(removeReaction)
           }
           
           // Then add the new vote
           const reaction = createReactionDraftEvent(event, emoji)
-          const seenOn = client.getSeenEventRelayUrls(event.id)
-          const evt = await publish(reaction, { additionalRelayUrls: seenOn })
+          const evt = await publish(reaction)
           noteStatsService.updateNoteStatsByEvents([evt])
         }
       } catch (error) {
diff --git a/src/components/PostEditor/PostRelaySelector.tsx b/src/components/PostEditor/PostRelaySelector.tsx
index 481f49a..0dcb326 100644
--- a/src/components/PostEditor/PostRelaySelector.tsx
+++ b/src/components/PostEditor/PostRelaySelector.tsx
@@ -51,15 +51,10 @@ export default function PostRelaySelector({
   const { relayUrls } = useCurrentRelays()
   const { relaySets, favoriteRelays } = useFavoriteRelays()
   const [postTargetItems, setPostTargetItems] = useState<TPostTargetItem[]>([])
-  const parentEventSeenOnRelays = useMemo(() => {
-    if (!parentEvent || !isProtectedEvent(parentEvent)) {
-      return []
-    }
-    return client.getSeenEventRelayUrls(parentEvent.id)
-  }, [parentEvent])
+  // Privacy: Only show user's own relays + defaults, never other users' relays
   const selectableRelays = useMemo(() => {
-    return Array.from(new Set(parentEventSeenOnRelays.concat(relayUrls).concat(favoriteRelays)))
-  }, [parentEventSeenOnRelays, relayUrls, favoriteRelays])
+    return Array.from(new Set(relayUrls.concat(favoriteRelays)))
+  }, [relayUrls, favoriteRelays])
   const description = useMemo(() => {
     if (postTargetItems.length === 0) {
       return t('No relays selected')
diff --git a/src/components/Profile/ProfileFeed.tsx b/src/components/Profile/ProfileFeed.tsx
index dd5e5e2..13c9c7e 100644
--- a/src/components/Profile/ProfileFeed.tsx
+++ b/src/components/Profile/ProfileFeed.tsx
@@ -40,27 +40,26 @@ export default function ProfileFeed({
 
   useEffect(() => {
     const init = async () => {
+      // Privacy: Only use user's own relays + defaults, never connect to other users' relays
+      const myRelayList = myPubkey ? await client.fetchRelayList(myPubkey) : { write: [], read: [] }
+      const userRelays = myRelayList.read.concat(BIG_RELAY_URLS)
+
       if (listMode === 'you') {
         if (!myPubkey) {
           setSubRequests([])
           return
         }
 
-        const [relayList, myRelayList] = await Promise.all([
-          client.fetchRelayList(pubkey),
-          client.fetchRelayList(myPubkey)
-        ])
-
         setSubRequests([
           {
-            urls: myRelayList.write.concat(BIG_RELAY_URLS).slice(0, 5),
+            urls: userRelays.slice(0, 5),
             filter: {
               authors: [myPubkey],
               '#p': [pubkey]
             }
           },
           {
-            urls: relayList.write.concat(BIG_RELAY_URLS).slice(0, 5),
+            urls: userRelays.slice(0, 5),
             filter: {
               authors: [pubkey],
               '#p': [myPubkey]
@@ -70,10 +69,9 @@ export default function ProfileFeed({
         return
       }
 
-      const relayList = await client.fetchRelayList(pubkey)
       setSubRequests([
         {
-          urls: relayList.write.concat(BIG_RELAY_URLS).slice(0, 8),
+          urls: userRelays.slice(0, 8),
           filter: {
             authors: [pubkey]
           }
@@ -81,7 +79,7 @@ export default function ProfileFeed({
       ])
     }
     init()
-  }, [pubkey, listMode])
+  }, [pubkey, listMode, myPubkey])
 
   const handleListModeChange = (mode: TNoteListMode) => {
     setListMode(mode)
diff --git a/src/components/QuoteList/index.tsx b/src/components/QuoteList/index.tsx
index bf4c9cf..acf62e9 100644
--- a/src/components/QuoteList/index.tsx
+++ b/src/components/QuoteList/index.tsx
@@ -29,14 +29,9 @@ export default function QuoteList({ event, className }: { event: Event; classNam
       setEvents([])
       setHasMore(true)
 
-      const relayList = await client.fetchRelayList(event.pubkey)
-      // Include user's mailbox relays for better quote discovery
+      // Privacy: Only use user's own relays + defaults, never connect to other users' relays
       const userRelays = userRelayList?.read || []
-      const relayUrls = Array.from(new Set(relayList.read.concat(userRelays).concat(FAST_READ_RELAY_URLS)))
-      const seenOn = client.getSeenEventRelayUrls(event.id)
-      relayUrls.unshift(...seenOn)
-      // Deduplicate the final list including seenOn relays
-      const finalRelayUrls = Array.from(new Set(relayUrls))
+      const finalRelayUrls = Array.from(new Set(userRelays.concat(FAST_READ_RELAY_URLS)))
 
       const { closer, timelineKey } = await client.subscribeTimeline(
         [
diff --git a/src/components/ReplyNoteList/index.tsx b/src/components/ReplyNoteList/index.tsx
index 06d8c50..e587d83 100644
--- a/src/components/ReplyNoteList/index.tsx
+++ b/src/components/ReplyNoteList/index.tsx
@@ -219,20 +219,11 @@ export default function ReplyNoteList({ index, event, sort = 'oldest' }: { index
       setLoading(true)
 
       try {
-        // Include user's mailbox relays for better reply discovery
+        // Privacy: Only use user's own relays + defaults, never connect to other users' relays
         const userRelays = userRelayList?.read || []
-        const seenOn =
-          rootInfo.type === 'E'
-            ? client.getSeenEventRelayUrls(rootInfo.id)
-            : rootInfo.type === 'A'
-              ? client.getSeenEventRelayUrls(rootInfo.eventId)
-              : []
-        
-        // Optimize relay selection: prioritize seen relays, then fast relays, then user relays
         const finalRelayUrls = Array.from(new Set([
-          ...seenOn, // Highest priority: relays where the event was seen
-          ...FAST_READ_RELAY_URLS, // Second priority: fast, well-connected relays
-          ...userRelays // Third priority: user's mailbox relays
+          ...FAST_READ_RELAY_URLS, // Fast, well-connected relays
+          ...userRelays // User's mailbox relays
         ]))
 
         const filters: (Omit<Filter, 'since' | 'until'> & {
diff --git a/src/providers/NostrProvider/index.tsx b/src/providers/NostrProvider/index.tsx
index 5c406df..854b5ea 100644
--- a/src/providers/NostrProvider/index.tsx
+++ b/src/providers/NostrProvider/index.tsx
@@ -655,11 +655,8 @@ export function NostrProvider({ children }: { children: React.ReactNode }) {
 
     const deletionRequest = await signEvent(createDeletionRequestDraftEvent(targetEvent))
 
-    const seenOn = client.getSeenEventRelayUrls(targetEvent.id)
-    const relays = await client.determineTargetRelays(targetEvent, {
-      specifiedRelayUrls: isProtectedEvent(targetEvent) ? seenOn : undefined,
-      additionalRelayUrls: seenOn
-    })
+    // Privacy: Only use user's own relays, never connect to "seen on" relays
+    const relays = await client.determineTargetRelays(targetEvent)
 
     await client.publishEvent(relays, deletionRequest)
 
diff --git a/src/services/client.service.ts b/src/services/client.service.ts
index e22eced..77b7623 100644
--- a/src/services/client.service.ts
+++ b/src/services/client.service.ts
@@ -7,7 +7,7 @@ import {
 } from '@/lib/event'
 import { getProfileFromEvent, getRelayListFromEvent } from '@/lib/event-metadata'
 import { formatPubkey, isValidPubkey, pubkeyToNpub, userIdToPubkey } from '@/lib/pubkey'
-import { getPubkeysFromPTags, getServersFromServerTags, tagNameEquals } from '@/lib/tag'
+import { getPubkeysFromPTags, getServersFromServerTags } from '@/lib/tag'
 import { isLocalNetworkUrl, isWebsocketUrl, normalizeUrl } from '@/lib/url'
 import { isSafari } from '@/lib/utils'
 import { ISigner, TProfile, TPublishOptions, TRelayList, TSubRequestFilter } from '@/types'
@@ -93,19 +93,14 @@ class ClientService extends EventTarget {
     event: NEvent,
     { specifiedRelayUrls, additionalRelayUrls }: TPublishOptions = {}
   ) {
-    if (event.kind === kinds.Report) {
-      const targetEventId = event.tags.find(tagNameEquals('e'))?.[1]
-      if (targetEventId) {
-        return this.getSeenEventRelayUrls(targetEventId)
-      }
-    }
-
     let relays: string[]
     if (specifiedRelayUrls?.length) {
       relays = specifiedRelayUrls
     } else {
       const _additionalRelayUrls: string[] = additionalRelayUrls ?? []
-      if (!specifiedRelayUrls?.length && ![kinds.Contacts, kinds.Mutelist].includes(event.kind)) {
+      
+      // For kind 1 (notes) and kind 24 (public messages), publish to mentioned users' inboxes
+      if (event.kind === kinds.ShortTextNote || event.kind === ExtendedKind.PUBLIC_MESSAGE) {
         const mentions: string[] = []
         event.tags.forEach(([tagName, tagValue]) => {
           if (
@@ -124,6 +119,7 @@ class ClientService extends EventTarget {
           })
         }
       }
+      
       if (
         [
           kinds.RelayList,
@@ -136,7 +132,8 @@ class ClientService extends EventTarget {
         _additionalRelayUrls.push(...BIG_RELAY_URLS)
       }
 
-      const relayList = await this.fetchRelayList(event.pubkey)
+      // Use current user's relay list
+      const relayList = this.pubkey ? await this.fetchRelayList(this.pubkey) : { write: [], read: [] }
       const senderWriteRelays = relayList?.write.slice(0, 6) ?? []
       const recipientReadRelays = Array.from(new Set(_additionalRelayUrls))
       relays = senderWriteRelays.concat(recipientReadRelays)
@@ -1030,14 +1027,8 @@ class ClientService extends EventTarget {
       return event
     }
 
-    // Then try the relays where this event was originally seen
-    const seenOnRelays = this.getSeenEventRelayUrls(id)
-    if (seenOnRelays.length > 0) {
-      const seenOnEvent = await this.tryHarderToFetchEvent(seenOnRelays, { ids: [id], limit: 1 }, true)
-      if (seenOnEvent) {
-        return seenOnEvent
-      }
-    }
+    // Privacy: Don't try "seen on" relays - only use defaults
+    // Fallback to BIG_RELAY_URLS if not found
 
     // Third, try the provided relay URLs
     if (relayUrls.length > 0) {
@@ -1047,11 +1038,10 @@ class ClientService extends EventTarget {
       }
     }
 
-    // Finally, try all available relays as a last resort
+    // Privacy: Use defaults and provided relays only
     const allAvailableRelays = Array.from(new Set([
       ...FAST_READ_RELAY_URLS,
       ...FAST_WRITE_RELAY_URLS,
-      ...seenOnRelays,
       ...relayUrls
     ]))
     
@@ -1061,7 +1051,6 @@ class ClientService extends EventTarget {
   private async _fetchEvent(id: string): Promise<NEvent | undefined> {
     let filter: Filter | undefined
     let relays: string[] = []
-    let author: string | undefined
     if (/^[0-9a-f]{64}$/.test(id)) {
       filter = { ids: [id] }
     } else {
@@ -1073,7 +1062,6 @@ class ClientService extends EventTarget {
         case 'nevent':
           filter = { ids: [data.id] }
           if (data.relays) relays = data.relays
-          if (data.author) author = data.author
           break
         case 'naddr':
           filter = {
@@ -1081,7 +1069,6 @@ class ClientService extends EventTarget {
             kinds: [data.kind],
             limit: 1
           }
-          author = data.pubkey
           if (data.identifier) {
             filter['#d'] = [data.identifier]
           }
@@ -1096,9 +1083,9 @@ class ClientService extends EventTarget {
     if (filter.ids) {
       event = await this.fetchEventById(relays, filter.ids[0])
     } else {
-      if (author) {
-        const relayList = await this.fetchRelayList(author)
-        relays.push(...relayList.write.slice(0, 4))
+      // Privacy: Don't fetch author's relays, use defaults
+      if (!relays.length) {
+        relays.push(...BIG_RELAY_URLS)
       }
       event = await this.tryHarderToFetchEvent(relays, filter)
     }
@@ -1115,12 +1102,8 @@ class ClientService extends EventTarget {
     filter: Filter,
     alreadyFetchedFromBigRelays = false
   ) {
-    if (!relayUrls.length && filter.authors?.length) {
-      const relayList = await this.fetchRelayList(filter.authors[0])
-      relayUrls = alreadyFetchedFromBigRelays
-        ? relayList.write.filter((url) => !BIG_RELAY_URLS.includes(url)).slice(0, 4)
-        : relayList.write.slice(0, 4)
-    } else if (!relayUrls.length && !alreadyFetchedFromBigRelays) {
+    // Privacy: Don't fetch author's relays, only use provided relays or defaults
+    if (!relayUrls.length && !alreadyFetchedFromBigRelays) {
       relayUrls = BIG_RELAY_URLS
     }
     if (!relayUrls.length) return
@@ -1691,50 +1674,21 @@ class ClientService extends EventTarget {
   }
 
   async generateSubRequestsForPubkeys(pubkeys: string[], myPubkey?: string | null) {
+    // Privacy: Only use user's own relays + defaults, never fetch other users' relays
+    let urls = BIG_RELAY_URLS
+    if (myPubkey) {
+      const relayList = await this.fetchRelayList(myPubkey)
+      urls = relayList.read.concat(BIG_RELAY_URLS).slice(0, 5)
+    }
+    
     // If many websocket connections are initiated simultaneously, it will be
     // very slow on Safari (for unknown reason)
     if (isSafari()) {
-      let urls = BIG_RELAY_URLS
-      if (myPubkey) {
-        const relayList = await this.fetchRelayList(myPubkey)
-        urls = relayList.read.concat(BIG_RELAY_URLS).slice(0, 5)
-      }
       return [{ urls, filter: { authors: pubkeys } }]
     }
 
-    const relayLists = await this.fetchRelayLists(pubkeys)
-    const group: Record<string, Set<string>> = {}
-    relayLists.forEach((relayList, index) => {
-      relayList.write.slice(0, 4).forEach((url) => {
-        if (!group[url]) {
-          group[url] = new Set()
-        }
-        group[url].add(pubkeys[index])
-      })
-    })
-
-    const relayCount = Object.keys(group).length
-    const coveredCount = new Map<string, number>()
-    Object.entries(group)
-      .sort(([, a], [, b]) => b.size - a.size)
-      .forEach(([url, pubkeys]) => {
-        if (
-          relayCount > 10 &&
-          pubkeys.size < 10 &&
-          Array.from(pubkeys).every((pubkey) => (coveredCount.get(pubkey) ?? 0) >= 2)
-        ) {
-          delete group[url]
-        } else {
-          pubkeys.forEach((pubkey) => {
-            coveredCount.set(pubkey, (coveredCount.get(pubkey) ?? 0) + 1)
-          })
-        }
-      })
-
-    return Object.entries(group).map(([url, authors]) => ({
-      urls: [url],
-      filter: { authors: Array.from(authors) }
-    }))
+    // Simplified: Use user's relays for all followed users instead of individual relay lists
+    return [{ urls, filter: { authors: pubkeys } }]
   }
 }
 
diff --git a/src/services/lightning.service.ts b/src/services/lightning.service.ts
index 924b151..63ae72c 100644
--- a/src/services/lightning.service.ts
+++ b/src/services/lightning.service.ts
@@ -47,9 +47,9 @@ class LightningService {
         ? { recipient: recipientOrEvent }
         : { recipient: recipientOrEvent.pubkey, event: recipientOrEvent }
 
-    const [profile, receiptRelayList, senderRelayList] = await Promise.all([
+    // Privacy: Only use current user's relays + defaults
+    const [profile, senderRelayList] = await Promise.all([
       client.fetchProfile(recipient, true),
-      client.fetchRelayList(recipient),
       sender
         ? client.fetchRelayList(sender)
         : Promise.resolve({ read: BIG_RELAY_URLS, write: BIG_RELAY_URLS })
@@ -66,10 +66,8 @@ class LightningService {
     const zapRequestDraft = makeZapRequest({
       ...(event ? { event } : { pubkey: recipient }),
       amount,
-      relays: receiptRelayList.read
-        .slice(0, 4)
-        .concat(senderRelayList.write.slice(0, 3))
-        .concat(BIG_RELAY_URLS),
+      // Privacy: Only use sender's relays + defaults, not recipient's relays
+      relays: senderRelayList.write.slice(0, 4).concat(BIG_RELAY_URLS),
       comment
     })
     const zapRequest = await client.signer.signEvent(zapRequestDraft)
@@ -175,8 +173,8 @@ class LightningService {
     if (this.recentSupportersCache) {
       return this.recentSupportersCache
     }
-    const relayList = await client.fetchRelayList(CODY_PUBKEY)
-    const events = await client.fetchEvents(relayList.read.slice(0, 4), {
+    // Privacy: Use defaults instead of fetching CODY_PUBKEY's relays
+    const events = await client.fetchEvents(BIG_RELAY_URLS.slice(0, 4), {
       authors: ['79f00d3f5a19ec806189fcab03c1be4ff81d18ee4f653c88fac41fe03570f432'], // alby
       kinds: [kinds.Zap],
       '#p': OFFICIAL_PUBKEYS,
diff --git a/src/services/note-stats.service.ts b/src/services/note-stats.service.ts
index 9403d52..1d74803 100644
--- a/src/services/note-stats.service.ts
+++ b/src/services/note-stats.service.ts
@@ -35,8 +35,9 @@ class NoteStatsService {
     if (oldStats?.updatedAt) {
       since = oldStats.updatedAt
     }
+    // Privacy: Only use current user's relays + defaults, never connect to other users' relays
     const [relayList, authorProfile] = await Promise.all([
-      client.fetchRelayList(event.pubkey),
+      pubkey ? client.fetchRelayList(pubkey) : Promise.resolve({ write: [], read: [] }),
       client.fetchProfile(event.pubkey)
     ])