diff --git a/docs/changelog.md b/docs/changelog.md
index 7eab9aa6..2db017eb 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -19,6 +19,26 @@ docstring gives: it is a record, not a claim about now.
 
 ## 2026-11-09
 
+- **The in-house ntfy topics are renamed so a phone can tell them apart.**
+  The iOS ntfy app shows a subscription by its topic name and has no display
+  name ([binwiederhier/ntfy#1314](https://github.com/binwiederhier/ntfy/issues/1314)),
+  so the three `make gen-secret` names read as three random strings on the
+  iPhone. Each name is now its channel's word, a dash, and twelve hex
+  characters: `alerts-…`, `urgent-…`, `security-…`, in
+  `secrets/sensitive.sops.yaml` and at the end of the three receiver URLs in
+  `secrets/observability.sops.yaml`, changed in the same PR. A bare word was
+  declined. [#136](https://github.com/Gerrrt/HomeLab/issues/136) asked that
+  the names be kept like a credential. And `upstream-base-url` sends ntfy.sh
+  the SHA-256 of each topic's URL to wake the iPhone, so `…/urgent` would let
+  anyone compute that hash, subscribe to it on ntfy.sh, and see when a page
+  is sent. The ntfy.sh pair keep their names, because there the name alone is
+  the credential. Android's app gets display names instead
+  (`stacks/sensitive/README.md`). The same day, `ScheduledJobNeverRan` for
+  `household-copy` and `household-proof` was silenced for ninety days under
+  [#455](https://github.com/Gerrrt/HomeLab/issues/455): it is correct while
+  no holder is chosen, and it was repeating every twelve hours on the
+  in-house channel.
+
 - **[#421](https://github.com/Gerrrt/HomeLab/issues/421),
   [#790](https://github.com/Gerrrt/HomeLab/issues/790): `gandalf` is ready
   for `tpl-kali`'s build, `build-the-lab-templates.md` §5 step 2's `gandalf`
diff --git a/docs/runbooks/build-the-sensitive-tier-host.md b/docs/runbooks/build-the-sensitive-tier-host.md
index aacab391..6f3cecfc 100644
--- a/docs/runbooks/build-the-sensitive-tier-host.md
+++ b/docs/runbooks/build-the-sensitive-tier-host.md
@@ -354,7 +354,7 @@ what each key is for. The values:
 | `NTFY_ALERTMANAGER_TOKEN` | the pinned image's `ntfy token generate` — the command is beside the key | No. The monitoring host's `ALERTMANAGER_NTFY_TOKEN` is the other copy |
 | `NTFY_ALERTMANAGER_PASSWORD_HASH` | `make gen-secret`, then `make hash-password` on it | No — the password is thrown away; this user logs in by token |
 | `NTFY_PHONE_PASSWORD_HASH` | `make hash-password` | **The password** — each phone's ntfy app logs in with it |
-| `NTFY_TOPIC_ALERTS`, `_URGENT`, `_SECURITY` | `make gen-secret`, three times | No. The monitoring host's receiver URLs end in the same three |
+| `NTFY_TOPIC_ALERTS`, `_URGENT`, `_SECURITY` | The channel's word, a dash and `openssl rand -hex 6`: `alerts-…`, `urgent-…`, `security-…` — the example file says why | No. The monitoring host's receiver URLs end in the same three |
 | `MINIFLUX_DBPASS` | `make gen-secret` — never typed: it is spliced into a connection string | No |
 | `MINIFLUX_ADMIN_PASSWORD` | `make gen-secret` | **Yes**, it is a login |
 | `LINKDING_SUPERUSER_PASSWORD` | `make gen-secret` | **Yes**, it is a login, and the only thing guarding the list ([ADR-0061](../adr/0061-add-linkding-to-the-sensitive-tier-behind-one-factor.md)) |
diff --git a/secrets/observability.example.yaml b/secrets/observability.example.yaml
index fd869f19..28f3043c 100644
--- a/secrets/observability.example.yaml
+++ b/secrets/observability.example.yaml
@@ -100,9 +100,9 @@ SNMP_PRIVPASS_NEO: change-me-neo-priv
 # shows a title and one line instead of JSON. Nothing about the
 # token goes in the URL — it is ALERTMANAGER_NTFY_TOKEN below, sent as a
 # header, because Caddy's access log records the URL.
-ALERTMANAGER_WEBHOOK_URL: https://ntfy.matrix.elysium/change-me-alerts-topic?template=homelab
-ALERTMANAGER_URGENT_WEBHOOK_URL: https://ntfy.matrix.elysium/change-me-urgent-topic?template=homelab
-ALERTMANAGER_SECURITY_WEBHOOK_URL: https://ntfy.matrix.elysium/change-me-security-topic?template=homelab
+ALERTMANAGER_WEBHOOK_URL: https://ntfy.matrix.elysium/alerts-changeme0000?template=homelab
+ALERTMANAGER_URGENT_WEBHOOK_URL: https://ntfy.matrix.elysium/urgent-changeme0000?template=homelab
+ALERTMANAGER_SECURITY_WEBHOOK_URL: https://ntfy.matrix.elysium/security-changeme0000?template=homelab
 
 # The same urgent and security channels, AGAIN, on ntfy.sh — for a phone that
 # is not on the home network and so cannot reach the in-house server (#136).
diff --git a/secrets/observability.sops.yaml b/secrets/observability.sops.yaml
index 7760a4d0..69c07500 100644
--- a/secrets/observability.sops.yaml
+++ b/secrets/observability.sops.yaml
@@ -28,9 +28,9 @@ SNMP_AUTHPASS_ILO: ENC[AES256_GCM,data:SEcb8Q7E6aCbgyDzxxgMx7Ch/j6wmb5I,iv:yfOpf
 SNMP_PRIVPASS_ILO: ENC[AES256_GCM,data:9p47YaJSds6YfcKkbNFEBPqoTXlkwKZG,iv:SWOVZIyiqoxWEt/arM+ffyY0dF7Ry3BMyfNPWISSqlo=,tag:Lvw3Wqap/ts3Kj7a8p3Njg==,type:str]
 #ENC[AES256_GCM,data:KYm60Zx9WHuw0PObbmuV5uOxqGJG51YHztUtmrAPocdqvPmnbSQJthKe3+PngPrfFfn7G8RfRANrDTgboVgQOWbwtvIlhK8CutPr16gq2rM=,iv:elgWymJ/VyQzT63VSPBtWYIsJY26GeG2T4MYZCmInWY=,tag:Px8SEziU2qyNYMMI0B1WAg==,type:comment]
 #ENC[AES256_GCM,data:c+QE2sE9agdh20ZSaWSTdnENoeFagYWbpy9D7oVKofDsi9oBM8rxxrlp4s8CfB3KcNv7uFBD2SZdMBVDltjfkJICEjKgfJCBQ8A=,iv:PQBt/eUj95BdLusTJc5o3ZwyqIZGy9/XEG/AQTHk/IU=,tag:spc+wLic1oKSlHgvBjiLSg==,type:comment]
-ALERTMANAGER_WEBHOOK_URL: ENC[AES256_GCM,data:q4l2VKC7cMagPDrdB8L9wUdLXufLWKdEHyuKivCiOoeRqZ6L7SXGyWor/mNCTYCRTWkbSahRX8nWRYTPZpuSlX1MuZ5l,iv:+RywBWb3PL+hqutP36aYvREDWyWPDww870b87P2xYFc=,tag:pKz2SSMgL/A+flKEbWZzkg==,type:str]
-ALERTMANAGER_URGENT_WEBHOOK_URL: ENC[AES256_GCM,data:5tpgO2n7maKWVTOgUzOI2xkJn1Sm+lXBApfWSfJG9F78rdbPNLe7ObIPYaYGqnP6aDZHjmFZJ+ufRU9m1rQFsxZzBAXz,iv:ciBrtVhs2k7KEHipQGm5vNBGUnK3fXKCcx1TWFOjeE8=,tag:cuFEDnIXNuqd7SlVLdQEkw==,type:str]
-ALERTMANAGER_SECURITY_WEBHOOK_URL: ENC[AES256_GCM,data:Ptb5MQlvZluQMil9v/XMPVoBeWTvr/anRaRriTk2XwxbI/oUcswsvIDXI453Wt9xplrz8G+xpAnSdOkug2SH/7IQRglA,iv:kp98mXHmGKJDYgujqAo4AaobPGDyZJUDMoeM+gz4VXI=,tag:zx0XHHVj3WJ0CrMBSXdBYw==,type:str]
+ALERTMANAGER_WEBHOOK_URL: ENC[AES256_GCM,data:NDX9rt9ZeJ+gpOerj1bFi++ZEmIanxe9MHxmFpUXVlHRUVE/7d0U5Unyfx5on5ktkoagSpYCYGfJ5bJJF4jleQ==,iv:aTLqUpoDczUvUGI2M1UfyuVx9oXanW+D/cL+BhTxm+M=,tag:BJUNPVNUiyUYBad30iLxVg==,type:str]
+ALERTMANAGER_URGENT_WEBHOOK_URL: ENC[AES256_GCM,data:zAmWXMTzLuWLTx1GAv5CKe57dnJ08PdoeAOltaQg5sP0ROkZetTkJpRcEEqjUUCbT8i9v511yKDikCZMPOvbvA==,iv:ZTLjWxUycqqI8u/JQJ3Z5WRY/zYRS09TJUvkRNIjLPg=,tag:xJEcbMhP9Xwp0aSMQoPMdw==,type:str]
+ALERTMANAGER_SECURITY_WEBHOOK_URL: ENC[AES256_GCM,data:tkdWGyemtcC7LIMQVnMAcdXsr6DalDnM/Y8r9uhQZPnBbrJ+S+y7LIZRniDNVlB8tafj+jy7+Gw2F2cjczu6zSSN,iv:4kqqu0aMbmDMyndy3RfPRfPmkWFIFnjJnKCVl0qLxC8=,tag:RqkfSWcoLumcBek38Fzdzg==,type:str]
 ALERTMANAGER_HEARTBEAT_URL: ENC[AES256_GCM,data:MLyUW0Il41PdYdQGJ8gP3/1tS5hF7RuFK6s+gC5uGjonhzR+oci17pfUmxWGKR8gq8v2kPgR9oc=,iv:R6MFSHEa8VlsMubSwnssfWnNV4rZj1o4KnV87yr5ZhU=,tag:2MkqtXOL7nZOZ3BJxxZ9Ag==,type:str]
 #ENC[AES256_GCM,data:ibikwgcTWigPNcgg0t3XIZXw9hH35iOL0wCrZT+igu9AwKq4gnI6jXkB6uoGtiVkbrZcHKi4i3flEG8=,iv:4Io1MYaGR3B2hBwC850ZcCYS+JbefgpkwIPtgkdTgcE=,tag:4GPC0EJpVymFIYU/oItxgQ==,type:comment]
 GRAFANA_RENDERER_TOKEN: ENC[AES256_GCM,data:Di7QsFgUnTpafqP8HMDBC8VcrjrU6co9,iv:6NvJz7n2UxORywAd/PvjmEf8hpeTWyqTXMyJ6GuITw0=,tag:fkskNXA66wNSyhLOmCUJcg==,type:str]
@@ -68,8 +68,8 @@ sops:
             NGhGVmx4eDU3R0l1bHRPM0t0NS82dEUKFrC+ts3UB8bm+oj+EviyTW6nVIlwFOIV
             25J6YSdIP+IbThGqA8j+yKPXrMaGv2PWVPADpTpmMg8nZJRx8Wv1XA==
             -----END AGE ENCRYPTED FILE-----
-    lastmodified: "2026-11-07T05:40:31Z"
-    mac: ENC[AES256_GCM,data:3rtiU3+sEwKodIaDn+8qzGhOecPyKesjAPzws62gr1rdZSOGmxQNX2WUlLGmpAuaJtQbCyN0+B9DYN4AQArw7toS3xkYADivjFctHL7nPcGHQ6AjgPyqaImMLguBXGcnDAxojIbL3Hqjh58tL8cauWrpgaoYDv9RMjx/BoSF2hs=,iv:7vXTWvIjAgOZ2I91VjC6FhaYrHPKbKnj4vSHXOWvQ3Q=,tag:+oCITNhb2/F9m060FpBt6g==,type:str]
+    lastmodified: "2026-11-09T18:06:33Z"
+    mac: ENC[AES256_GCM,data:qjDSln/C60uUX3ruTnvq4/zAO0LpoelFnGF8uNFPn8Lo8p6Ls2uY45zvdr030ar4EgNODlaCtnwduPaSBndWy8jdiFjwlxn4PUGKiparyHTTcdwcE403DH19zEOhEHL0eiAKT8ta1yG5hYMTy/xnN9KJlgn/ss+x/6vh2o5z6Bg=,iv:wD5FK7ZF1bRDXyighKRd8MKJbCdYZET1ENL5D732PkY=,tag:2KTocf207HyEYXHX+gOl8Q==,type:str]
     pgp: []
     unencrypted_suffix: _unencrypted
     version: 3.9.4
diff --git a/secrets/sensitive.example.yaml b/secrets/sensitive.example.yaml
index 80216484..16959fde 100644
--- a/secrets/sensitive.example.yaml
+++ b/secrets/sensitive.example.yaml
@@ -211,21 +211,30 @@ MQTT_RING_PASSWORD: change-me
 #                                    `phone` (`make hash-password`). The
 #                                    password goes in the password manager.
 #   NTFY_TOPIC_ALERTS / _URGENT / _SECURITY
-#                                    three topic names, each `make gen-secret`
-#                                    output. The same three names end the URLs
-#                                    in secrets/observability.sops.yaml. With
-#                                    deny-all a name grants nothing by itself,
-#                                    but #136 asked that they be kept like a
-#                                    credential, and they are.
+#                                    three topic names, each the channel's own
+#                                    word, a dash, and `openssl rand -hex 6`:
+#                                    alerts-…, urgent-…, security-…. The same
+#                                    three names end the URLs in
+#                                    secrets/observability.sops.yaml. The word
+#                                    is for the iPhone, whose ntfy app shows
+#                                    the topic name and has no display name
+#                                    (2026-11-09). The random tail is kept
+#                                    because #136 asked that the names be kept
+#                                    like a credential, and because ntfy.sh
+#                                    receives the SHA-256 of each topic's URL
+#                                    to wake the iPhone: a bare `urgent` would
+#                                    let anyone compute that hash and watch
+#                                    when a page is sent. Letters, digits and
+#                                    dashes only.
 #
 # Both hashes carry `$`; paste them as they are — render-config.sh escapes them
 # for compose's .env, as it does AdGuard's.
 NTFY_ALERTMANAGER_TOKEN: tk_changemechangemechangeme00
 NTFY_ALERTMANAGER_PASSWORD_HASH: change-me-to-the-output-of-make-hash-password
 NTFY_PHONE_PASSWORD_HASH: change-me-to-the-output-of-make-hash-password
-NTFY_TOPIC_ALERTS: change-me-to-something-long-and-random
-NTFY_TOPIC_URGENT: change-me-to-something-long-and-random
-NTFY_TOPIC_SECURITY: change-me-to-something-long-and-random
+NTFY_TOPIC_ALERTS: alerts-changeme0000
+NTFY_TOPIC_URGENT: urgent-changeme0000
+NTFY_TOPIC_SECURITY: security-changeme0000
 
 # Miniflux (#147, ADR-0057). Both generated (`make gen-secret`), none typed:
 #
diff --git a/secrets/sensitive.sops.yaml b/secrets/sensitive.sops.yaml
index abbabfc0..d2225874 100644
--- a/secrets/sensitive.sops.yaml
+++ b/secrets/sensitive.sops.yaml
@@ -101,9 +101,9 @@ PAPERLESS_ADMIN_PASSWORD: ENC[AES256_GCM,data:T8KRQtakbdjI8hrY+OKaB9vY1EkLT8RS,i
 NTFY_ALERTMANAGER_TOKEN: ENC[AES256_GCM,data:RNAM3K22PmpQiuZSfkVO7Hu8QdyuCCdXKfSOTcxZDnw=,iv:9Ijr/9D952aMoPOAHWS81Wp7QSFK7DRKX7ln4KOx0JM=,tag:N0YOlC/V7gE/ARoeQWAXOw==,type:str]
 NTFY_ALERTMANAGER_PASSWORD_HASH: ENC[AES256_GCM,data:ORDfCxUdjwMzZ9NSEYtgM1w4pFWxeVlrp0RlP+tMAef49PUdnsebgnceqSYwDGlJvQVCBzWJmSQsUvKQ,iv:P39Qfz774REjOms70R7DmORXa3QTVJM2oS7R2AptVo8=,tag:dveLyCaCAZfq5hqR+JiW4g==,type:str]
 NTFY_PHONE_PASSWORD_HASH: ENC[AES256_GCM,data:H+a+vnHDilp6R5GzZ5w3O3T4hjdKzCENO7tJ6VsD2IIDNFcMnbpPSva0ZgdyDKK8QnYaNuZiSyPDXYJu,iv:04S4saMbYjSJExNHl7KW+MgrC5U17lIGW9ZDaUEPMg4=,tag:flXr36yJecNafbaBgykrBw==,type:str]
-NTFY_TOPIC_ALERTS: ENC[AES256_GCM,data:/sd4w3Hn+0SpDNiynm7el3P6d8KouQh0,iv:pQDlGB0q3gCeC0WsqLh4Syfh6oR/ektEzwdpNu5HXOc=,tag:3iwQw4V+71g2ACjtNS59qw==,type:str]
-NTFY_TOPIC_URGENT: ENC[AES256_GCM,data:V0lKvEko5ukpqPZUDeEhKqDzJdWtXMNA,iv:y5IHLDN1ONc/3/X0JFEBh3eyKpx81ia+5JFjR7SD6Ow=,tag:K7JcvqILFVFyLI9m75vBBg==,type:str]
-NTFY_TOPIC_SECURITY: ENC[AES256_GCM,data:nzdGp87bMsDH6J0OAqdiEeVxg+CaL+Zf,iv:az6fiirnR7yBYcjuEO7osYA7rDJh13gB3ggl9EkX1VI=,tag:03LR/6ewhhQMS1dLrLGJEg==,type:str]
+NTFY_TOPIC_ALERTS: ENC[AES256_GCM,data:nMiZWCZE08B62kBL99zecgfQCQ==,iv:5kD7bA6a4VKZSqXUhJHa/rJiflJAIBco5VLW77DmOnc=,tag:H14YSU6KzVw4Beda3GUFRQ==,type:str]
+NTFY_TOPIC_URGENT: ENC[AES256_GCM,data:Q4WsVxnAWCGTTsOjIUZKEz3XfA==,iv:JQDqZbLKprvRUs555d2g/ns1c6DnA1kBu9bFess7G3g=,tag:aLqDuOHNa4JS/8gCZTa4dA==,type:str]
+NTFY_TOPIC_SECURITY: ENC[AES256_GCM,data:/c+jNLDvZ65FWUmBATG5b+ad1BJS,iv:f1PWfR3j0jjbgkCMiHEgQ9WnYjF9ZnAVSW8e+9frNFQ=,tag:gFq8WTJ3Dy17h04GriRgFw==,type:str]
 GLANCE_IMMICH_API_KEY: ENC[AES256_GCM,data:Z46+ZCHNrjtsIUU8DcvFafr6Usweryclv2TDYBM9sVNZPdrqKQvLHws=,iv:IeCnK3/Tf/aUt2ZeEL5GnrjkfAQ0TkohoHkOPZXViOE=,tag:FJDHraiLBbnMajTaJDwszg==,type:str]
 GLANCE_PAPERLESS_TOKEN: ENC[AES256_GCM,data:vf1VGOSgxUFiiSsmKkf87RMdLJsS34t9iusqQU2mWpcHyEcAzwaLRw==,iv:GiO2jD9ehOt3mz6n2Fqow/7QJVtXKhWMKLpmDOVYfD0=,tag:eC4UmvCw+DOv5/WpbeUYQQ==,type:str]
 MINIFLUX_DBPASS: ENC[AES256_GCM,data:OdnXudf3/cIN5rlSiHXvI7Z/TeSlLo19,iv:QoLjAWrDS6oX5f8o7rT051MrLxnZZYSSrMUz7sQ64ws=,tag:iYrO+4FSFhClk4cZSq2BJg==,type:str]
@@ -145,8 +145,8 @@ sops:
             RGFiYUlWUUxSYWpVbzNaR0RSaUpLYzQKRssWILF29DQ57eS6Rcnz8TF4qSPrLj4Q
             0coqwkg00uzmjaINDwnl9WAvXPBzSL7eEih2BKTVBRfhJjvDJ+tRWQ==
             -----END AGE ENCRYPTED FILE-----
-    lastmodified: "2026-10-22T20:39:23Z"
-    mac: ENC[AES256_GCM,data:q+5JhoBWOJ0zPcT0gHbSEj4XujKK12qrlQ+LI8/mk9re2bQWqHw16gwNPiuoadDMNuWytvhuQmVltcrYyjvw644KoLQRp3EGVzELB+aMaaEniyeyIDuv6rbMIUqhsZRX6SLIvSWD5zlOrjuP280f6s/QrGzdv0Rh6eKmaMCVfJA=,iv:5Jok8vhR2zaDM+iCKsGOQL+EP5Ac4IDa561BW1YEPs4=,tag:8AvUn6Q+tX0V2h/+EuYDqw==,type:str]
+    lastmodified: "2026-11-09T17:57:55Z"
+    mac: ENC[AES256_GCM,data:b3nztB8xsYuy5xS6Way0hhZTyPdKFmuqv3q9tmKeNaajOjCoOoEW332VYYHUvG3fGaQsuKkGi3v3lH+H/GCk2U0yZk+Zzj90Ser7l00a9g1yPv66Hp/H5nbSXrWePWAyXUv21cGtQ3oAjDq/OVlvEXyrDA79Cm8eDGKaTrFgik0=,iv:wCQiLX4xbFNjxfdTTEIiPg4B1f95HlU/zSPJOlMq+Ws=,tag:jpBwCBAtrwvIvx/ZQKvweg==,type:str]
     pgp: []
     unencrypted_suffix: _unencrypted
     version: 3.9.4
diff --git a/stacks/sensitive/README.md b/stacks/sensitive/README.md
index 4d14d9c6..34f89f17 100644
--- a/stacks/sensitive/README.md
+++ b/stacks/sensitive/README.md
@@ -745,6 +745,10 @@ here.
   1. Add the three in-house topics, with server
      `https://ntfy.matrix.elysium` and user `phone`. The password is in the
      password manager; the topic names are in `secrets/sensitive.sops.yaml`.
+     Each begins with its channel's word, because the iOS app shows the
+     topic name and cannot rename a subscription. Android's can: give every
+     subscription, the ntfy.sh pair included, a *Display name* in its
+     settings.
   2. Keep the two ntfy.sh subscriptions. They are the off-network pager.
   3. On iOS, leave the app's *default server* at `ntfy.sh`. The upstream
      wake-ups arrive through it.