Philosophy
Privacy on macOS, protect your digital life effectively
Radars right now
SIGNAL When iMessage fails, your messages go out in the clear When iMessage drops out, your iPhone falls back to SMS or unencrypted RCS without a real warning. Three Messages settings stop the fallback. Read the radar
When iMessage or encrypted RCS drops out, Messages moves the conversation to unencrypted RCS, SMS or MMS, in the same thread. No alert, just a discreet mention. Three iPhone settings shut these fallbacks down. An iMessage that can't go out encrypted then stays failed, and you decide whether to send it anyway.
What you need to do
1. Turn off Resend as Text Message (Retry as Text Message on some iPhones), in Settings > Apps > Messages. An iMessage that fails stays failed instead of going out as SMS.
2. Turn off RCS Messaging, in its own submenu, if you want no fallback to unencrypted RCS. You also lose encrypted RCS, where your carrier offers it. In France, Orange, SFR, Bouygues Telecom and Free offer RCS, none encrypts it on iPhone yet, so you lose no encryption.
3. Turn off MMS Messaging. Even with the SMS fallback off, Messages can still fall back to MMS.
ALERT Self-hosted Nextcloud, a Collabora flaw already exploited A critical flaw in Nextcloud's built-in Collabora opens your server without a password. Check, hunt for the intruder, update it or remove it. Read the radar
A critical flaw in Nextcloud's built-in Collabora lets anyone run commands on your server without a single password, and administrators have already found backdoors on theirs. A patched built-in Collabora has been available since September 11 for Nextcloud 30 and later, but updating it does not evict an intruder who is already in.
What you need to do
1. Check whether the built-in Collabora (the richdocumentscode app) is installed on your Nextcloud, and which version. Before version 26.4.303 of the built-in Collabora, you are exposed. A Collabora installed separately, connected through Nextcloud Office, is not affected.
2. Hunt for a backdoor before you patch, unexpected PHP files in the built-in Collabora folder and suspicious requests in your logs since September 10.
3. Update the built-in Collabora to 26.4.303 or later, or remove it. Disabling it is not enough. If your Nextcloud runs version 29 or older, this update is not offered to you, update Nextcloud first. Aim for Nextcloud 33 or later in any case, earlier versions are no longer maintained.
4. If you find an intruder, change every secret your web server can read. The commands are in the full radar.
Latest
AI Agents Under Control
1 of 7 published
Latest Your AI agent has the keys to your house
Your AI talks to ad networks, mute its mic
Stop living as an administrator on your Mac
AI
See more →
Your SSH Keys vs AI Agents
2 episodes · complete series
Your AI, at Home
3 episodes · complete series
MCP servers, the backdoor into your AI
Apple Intelligence, what's really leaving your Mac
Tutorials
See more →
Antivirus alone no longer protects your Mac
Make Your SIEM Talk
3 of 5 published
Mac and Tailscale, your private WireGuard network in 15 min flat
Build Your Sovereign SIEM
8 episodes · complete series
Latest Alerting and total cost, the final tally of your sovereign SIEM
Switching from Gmail to ProtonMail on Mac
Why your mail client is a sieve, and how to fix it
Comparisons
See more →
Leaving Google Photos for Proton, Ente or Immich?
De-Googled browsers, the false choice they sell you
kSuite vs Google Workspace, the honest comparison
Little Snitch vs LuLu, which outgoing firewall for your Mac
Explainers
See more →
Your email provider has ten days to hand you over
Code signing, the shared anchor of Santa and Little Snitch
Passwork, « Made in EU » outside, FSB-certified inside
Your Mac was patched by XProtect without your knowledge, it's for your own good
Proton Meet, end-to-end encrypted video calls
Privacy isn't a subscription you pay to Big Tech.
@macsouverain
@macsouverain.bsky.social