Nieuwe bruggen
Sinds de dood van Twitter, wilde ik schrijven, maar ondertussen is best de vraag of je niet beter kan schrijven ‘Sinds de transformatie van Twitter naar X’, want het platform Twitter is toch wel blijven bestaan, weliswaar onder een andere naam. Alle politici zitten daar nog, alle sportploegen zitten daar nog, het netwerkeffect is toch te sterk. De totale ineenstorting is niet […]
https://www.filmvanalledag.nl/2025/08/10/nieuwe-bruggen/

Yes there are many ways to slice leading to entirely different models. In terms of categories I discern:
- Business domains (e.g. Microblogging, Content management).
- Application domains (e.g. ForgeFed, Mastodon).
Above I refer more to a meta-model, but expressed as a business domain it'd be something like "Protocol development".
Protocol layers, transports, extension points, wire formats, conceptual architecture, etc. So we can talk about #ActivityPub in ubiquitous language.
Picking Sides in the Protocol Wars by @ewancroft.uk - ewancroft.uk/blog/3lvzrtk...
#ActivityPub #ATProto #ATProtocol #Nostr
Picking Sides in the Protocol ...
Picking Sides in the Protocol Wars by @ewanc26 - https://ewancroft.uk/blog/3lvzrtkwttz2p
#ActivityPub #ATProto #ATProtocol #Nostr
🚨 CVE-2025-54888: HIGH severity auth bypass in fedify-dev fedify (<1.3.20, 1.4.0-dev.585–1.4.12, etc). Allows attacker to impersonate any ActivityPub actor. Patch to 1.3.20+ and monitor for abuse! https://radar.offseq.com/threat/cve-2025-54888-cwe-287-improper-authentication-in--7c8f93db #OffSeq #Fedify #Vuln #ActivityPub

How to Block Meta AI?
You can’t.
But you can slow it down.
The first half of Meta’s bot behaves like any other bot — that part you can block. There are many scripts available that are effective at stopping bots, and they work well.
The second half of Meta’s AI is where the real problem lies.
Meta anticipated that people would eventually catch on to their AI scraping, so they designed a system that uses standard web browsers. The AI doesn’t directly visit your site — it interacts with a browser instance on another system. It just does this using countless small, distributed micro-instances.
#Meta #AI #ArtificialIntelligence #Fediverse #ActivityPub #Mastodon #Misskey
Threads as a fun monster, with his shadow companions behind him.
After Meta acquired the Threads.com domain for an undisclosed sum last year, I noticed that Threads.com began forwarding to Threads.net (which included username handles).
Several months later, Adam Mosseri (then head of Threads and current CEO of Instagram) announced that Threads on the web would operate on the .com domain […]
https://darnell.tv/2025/08/09/shadow-net-domain-instagram-youtube-fediverse/

@thisismissem there are many #fediverse platforms using #ActivityPub, most of which allow media sharing, and i have never really understood what @pixelfed purports to bring to the party anyway.
A minor update to FEP-fe34: Origin-based security model
https://codeberg.org/fediverse/fep/pulls/662
- Explained how to identify public keys. They can be identified by publicKeyPem and publicKeyMultibase properties ("duck typing").
- Added a warning for JSON-LD consumers. Even innocuously looking property can become publicKeyPem or publicKeyMultibase after doing JSON-LD transformations.
You can read more about this problem in this post: https://socialhub.activitypub.rocks/t/am-i-understanding-something-wrong-or-is-json-ld-remote-context-support-a-gigantic-security-vulnerability-if-any-dumb-c2s-server-implementation-tries-to-federate-with-the-current-network/5439/1
@kopper suggests possible workarounds there but I think they are way too complicated. Just don't do JSON-LD.
#fep_fe34 #jsonld #ActivityPub
Reichweitenstarke Blogs und das #ActivityPub Plugin für Wordpress - Fedispace | notes https://notes.fedispace.de/reichweitenstarke-blogs-und-das-activitypub-plugin-fur-wordpress
Die Conclusio kann ich nur unterschreiben. Es wäre fein, wenn man bei Webspaces beim Hoster mehr Optionen hätte - Man zahl mehr und bekommt dafür mehr Space, mehr Prozessorzeit, etc.
Reichweitenstarke Blogs und das ActivityPub Plugin für Wordpress
Ich habe einen interessanten Beitrag von Elena Rossini gelesen, in dem sie kurz beschreibt, was ihr öfter im Zusammenhang mit WordPress und dem ActivityPub-Plugin passiert ist.
https://notes.fedispace.de/reichweitenstarke-blogs-und-das-activitypub-plugin-fur-wordpress
#bloggen #wordpress #activitypub