simmac
@simmac.at
hacker, student, sw engineer, researcher.
appsec, privacy tech, tech&society, ctfs, making music, cooking etc
swe & sec&privacy researcher @zeitkapsl.eu
they/he/she
appsec, privacy tech, tech&society, ctfs, making music, cooking etc
swe & sec&privacy researcher @zeitkapsl.eu
they/he/she
Reposted by simmac
Sponsor Spotlight: A big thanks goes out the the city of Vienna @wien.gv.at for supporting #BSidesVienna. Check out their new public bug bounty over at bugcrowd.com/engagements/..., they pay out bounties!
City of Vienna Managed Bug Bounty | Bugcrowd
Learn more about City of Vienna - Vienna Municipal Department 01’s Bug Bounty engagement powered by Bugcrowd, the leader in crowdsourced security solutions.
bugcrowd.com
November 4, 2025 at 10:34 AM
Sponsor Spotlight: A big thanks goes out the the city of Vienna @wien.gv.at for supporting #BSidesVienna. Check out their new public bug bounty over at bugcrowd.com/engagements/..., they pay out bounties!
Reposted by simmac
I wrote a bit about my work on face recognition in @zeitkapsl.eu
At @zeitkapsl.eu we’re building face detection that runs fully on-device, with no unencrypted photos or metadata leaving your phone.
Curious how all that works?
@simmac.at took the time to describe the whole process in detail.
👉 zeitkapsl.eu/en/articles/...
#degoogle #privacy #e2ee #facesearch
Curious how all that works?
@simmac.at took the time to describe the whole process in detail.
👉 zeitkapsl.eu/en/articles/...
#degoogle #privacy #e2ee #facesearch
Privacy preserving face recognition
A privacy-first, on-device face recognition system that runs entirely on your smartphone by combining encrypted data, lightweight neural networks and secure device sync to organize your photos without...
zeitkapsl.eu
October 14, 2025 at 8:54 AM
I wrote a bit about my work on face recognition in @zeitkapsl.eu
I wrote a bit about my work on face recognition in @zeitkapsl.eu
At @zeitkapsl.eu we’re building face detection that runs fully on-device, with no unencrypted photos or metadata leaving your phone.
Curious how all that works?
@simmac.at took the time to describe the whole process in detail.
👉 zeitkapsl.eu/en/articles/...
#degoogle #privacy #e2ee #facesearch
Curious how all that works?
@simmac.at took the time to describe the whole process in detail.
👉 zeitkapsl.eu/en/articles/...
#degoogle #privacy #e2ee #facesearch
Privacy preserving face recognition
A privacy-first, on-device face recognition system that runs entirely on your smartphone by combining encrypted data, lightweight neural networks and secure device sync to organize your photos without...
zeitkapsl.eu
October 14, 2025 at 8:54 AM
I wrote a bit about my work on face recognition in @zeitkapsl.eu
how it started | how it's going
![EU-Parlament für Namensverbot
Das EU-Parlament will Bezeichnungen wie „Veggie-Wurst“ und „Soja-Schnitzel“ verbieten lassen. Eine Mehrheit der Abgeordneten stimmte am Mittwoch in Straßburg für eine entsprechende Gesetzesänderung. Das Votum sorgte im Anschluss für breite Kritik. Die Entscheidung ist nicht endgültig, sie geht nun in die Verhandlungen mit den 27 EU-Ländern.
355 Abgeordnete stimmten für das Verbot, 247 waren dagegen, und 30 enthielten sich. Die Ja-Stimmen kamen vor allem von Fraktionen rechts der Mitte. Aber auch Mitglieder der sozialdemokratischen S&D-Fraktion und der Liberalen stimmten dafür. Die Abstimmung war Teil eines Gesetzespakets, mit dem die EU eigentlich die Position von Bäuerinnen und Bauern in den Verhandlungen über Preise in Supermärkten stärken will.
[...]
Österreichs Abgeordnete gespalten
Österreichische Vertreter im EU-Parlament bezogen gemischte Positionen: Die FPÖ sprach sich vor der Abstimmung klar für das Verbot aus. „Kundentäuschung darf es nicht geben – wer Fleisch kauft, soll Fleisch bekommen, und wer Gemüse kauft, soll auch wissen, dass es Gemüse ist“, teilte der FPÖ-EU-Abgeordnete Gerald Hauser auf ORF.at-Anfrage mit.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:yecw7rperelbbw77fyhehs5j/bafkreiapfbtjkqo3xwmxz6cqslh3isuayihoal4hz2i5ajjqqqr6scfnvy@jpeg)
October 8, 2025 at 7:01 PM
how it started | how it's going
Reposted by simmac
🚨 🇩🇪's position on Chat Control is at a tipping point, reportedly there is disagreement within government parties
📢 The upcoming hours will decide the digital future of 🇪🇺!
Especially if you are a 🇩🇪 citizen:
📧 ☎️ contact your representatives &
✍️ sign the petition now: weact.campact.de/petitions/ch...
📢 The upcoming hours will decide the digital future of 🇪🇺!
Especially if you are a 🇩🇪 citizen:
📧 ☎️ contact your representatives &
✍️ sign the petition now: weact.campact.de/petitions/ch...
Chatkontrolle stoppen!
Die EU-Kommission will Messenger-Dienste wie WhatsApp und Signal zwingen, alle privaten Nachrichten und Fotos in Echtzeit zu scannen. Angeblich zum Kinderschutz. In Wahrheit bedeutet die Chatkontrolle...
weact.campact.de
October 7, 2025 at 10:42 PM
🚨 🇩🇪's position on Chat Control is at a tipping point, reportedly there is disagreement within government parties
📢 The upcoming hours will decide the digital future of 🇪🇺!
Especially if you are a 🇩🇪 citizen:
📧 ☎️ contact your representatives &
✍️ sign the petition now: weact.campact.de/petitions/ch...
📢 The upcoming hours will decide the digital future of 🇪🇺!
Especially if you are a 🇩🇪 citizen:
📧 ☎️ contact your representatives &
✍️ sign the petition now: weact.campact.de/petitions/ch...
Reposted by simmac
Together with @tuta.com, the @digitalsme.eu as well as @cryptpad.org, @ecosiasearch.bsky.social, @element.io, @mailbox.org, @nextcloud.bsky.social, @olvid.io, @proton.me, @startmail.bsky.social, @threema.ch and many more we signed an open letter against the EU chat control:
tuta.com/blog/open-le...
tuta.com/blog/open-le...
Europe's future is at stake: Open letter against Chat Control | Tuta
European SMEs have united to direct a strong open letter to urge ministers of EU member states to oppose Chat Control and to defend privacy and a strong European tech industry.
tuta.com
October 7, 2025 at 12:09 PM
Together with @tuta.com, the @digitalsme.eu as well as @cryptpad.org, @ecosiasearch.bsky.social, @element.io, @mailbox.org, @nextcloud.bsky.social, @olvid.io, @proton.me, @startmail.bsky.social, @threema.ch and many more we signed an open letter against the EU chat control:
tuta.com/blog/open-le...
tuta.com/blog/open-le...
Reposted by simmac
We promised to release our source code by end of year...
and we finally did it.
We built @zeitkapsl.eu around a principle: you should own your memories, not us. Releasing our code is the logical next step.
🧭 Explore on Codeberg: codeberg.org/zeitkapsl/zeitkapsl
#opensource #gplv3 #foss
and we finally did it.
We built @zeitkapsl.eu around a principle: you should own your memories, not us. Releasing our code is the logical next step.
🧭 Explore on Codeberg: codeberg.org/zeitkapsl/zeitkapsl
#opensource #gplv3 #foss
October 4, 2025 at 8:21 PM
We promised to release our source code by end of year...
and we finally did it.
We built @zeitkapsl.eu around a principle: you should own your memories, not us. Releasing our code is the logical next step.
🧭 Explore on Codeberg: codeberg.org/zeitkapsl/zeitkapsl
#opensource #gplv3 #foss
and we finally did it.
We built @zeitkapsl.eu around a principle: you should own your memories, not us. Releasing our code is the logical next step.
🧭 Explore on Codeberg: codeberg.org/zeitkapsl/zeitkapsl
#opensource #gplv3 #foss
Reposted by simmac
Surprise: the #BSidesVienna CF* is extended until 11.10. If you thought you missed your chance, you didn’t! Talks, workshops, rookie track—we’re still looking forward to your ideas.
cfp.bsidesvienna.at
cfp.bsidesvienna.at
BSidesVienna 0x7E9
Schedule, talks and talk submissions for BSidesVienna 0x7E9
cfp.bsidesvienna.at
September 30, 2025 at 10:26 PM
Surprise: the #BSidesVienna CF* is extended until 11.10. If you thought you missed your chance, you didn’t! Talks, workshops, rookie track—we’re still looking forward to your ideas.
cfp.bsidesvienna.at
cfp.bsidesvienna.at
Reposted by simmac
Für alle, die jetzt erklären, die Milliarden kämen ja aus der ASFINAG.
Stimmt, aber die Asfinag steht im Eigentum der Republik. Die Bundesregierung könnte sich die Milliarden der Asfinag per Sonderdividende ins Budget holen. Oder der Nationalrat könnte das per ASFINAG-Novelle.
Und genau so.. 1/2
Stimmt, aber die Asfinag steht im Eigentum der Republik. Die Bundesregierung könnte sich die Milliarden der Asfinag per Sonderdividende ins Budget holen. Oder der Nationalrat könnte das per ASFINAG-Novelle.
Und genau so.. 1/2
September 25, 2025 at 12:17 PM
Für alle, die jetzt erklären, die Milliarden kämen ja aus der ASFINAG.
Stimmt, aber die Asfinag steht im Eigentum der Republik. Die Bundesregierung könnte sich die Milliarden der Asfinag per Sonderdividende ins Budget holen. Oder der Nationalrat könnte das per ASFINAG-Novelle.
Und genau so.. 1/2
Stimmt, aber die Asfinag steht im Eigentum der Republik. Die Bundesregierung könnte sich die Milliarden der Asfinag per Sonderdividende ins Budget holen. Oder der Nationalrat könnte das per ASFINAG-Novelle.
Und genau so.. 1/2
wien.orf.at/stories/3323...
Dafür sind die Milliarden jetzt da? @spoe.at quo vadis? Sozialkürzungen und gleichzeitig fossile, klimaschädliche Großprojekte umsetzen die uns Milliarden kosten und laut allen wissenschaftlichen Gutachten keinen Nutzen bringen? 🤡
Dafür sind die Milliarden jetzt da? @spoe.at quo vadis? Sozialkürzungen und gleichzeitig fossile, klimaschädliche Großprojekte umsetzen die uns Milliarden kosten und laut allen wissenschaftlichen Gutachten keinen Nutzen bringen? 🤡
Lobautunnel soll doch gebaut werden
Der Lobautunnel kommt. Das hat Verkehrsminister Peter Hanke (SPÖ) heute bekannt gegeben. Der Lobautunnel ist Teil des S1-Abschnitts Schwechat-Süßenbrunn und soll die A4 mit der A23 verbinden. Rund um ...
wien.orf.at
September 25, 2025 at 9:45 AM
wien.orf.at/stories/3323...
Dafür sind die Milliarden jetzt da? @spoe.at quo vadis? Sozialkürzungen und gleichzeitig fossile, klimaschädliche Großprojekte umsetzen die uns Milliarden kosten und laut allen wissenschaftlichen Gutachten keinen Nutzen bringen? 🤡
Dafür sind die Milliarden jetzt da? @spoe.at quo vadis? Sozialkürzungen und gleichzeitig fossile, klimaschädliche Großprojekte umsetzen die uns Milliarden kosten und laut allen wissenschaftlichen Gutachten keinen Nutzen bringen? 🤡
Reposted by simmac
Adversarial ATProto PDS Migration www.da.vidbuchanan.co.uk/blog/adversa...
aka how to migrate your account if your old PDS explodes, and how to prepare for it in advance
aka how to migrate your account if your old PDS explodes, and how to prepare for it in advance
Adversarial ATProto PDS Migration | Blog
www.da.vidbuchanan.co.uk
July 28, 2025 at 6:50 PM
Adversarial ATProto PDS Migration www.da.vidbuchanan.co.uk/blog/adversa...
aka how to migrate your account if your old PDS explodes, and how to prepare for it in advance
aka how to migrate your account if your old PDS explodes, and how to prepare for it in advance
Reposted by simmac
berthub.eu/articles/pos...
Great overview on the current sad state of #chatcoontrol from @berthubert.bsky.social
Great overview on the current sad state of #chatcoontrol from @berthubert.bsky.social
Chatcontrol 2025 (kurz) - Bert Hubert
Kurz zusammengefasst: Unter der Führung Dänemarks fordern viele EU-Mitgliedsstaaten, WhatsApp, Signal und co dazu zu zwingen, dass alle darüber versendeten Fotos und Links mit KI durchsucht werden. We...
berthub.eu
August 18, 2025 at 7:37 AM
berthub.eu/articles/pos...
Great overview on the current sad state of #chatcoontrol from @berthubert.bsky.social
Great overview on the current sad state of #chatcoontrol from @berthubert.bsky.social
Reposted by simmac
Great (and sad) overview on the current state of #ChatControl
fightchatcontrol.eu
As of today, only #Austria, #Netherlands and #Poland are opposing
Let's change that: get in touch with your MEPs:
fightchatcontrol.eu#contact-tool
fightchatcontrol.eu
As of today, only #Austria, #Netherlands and #Poland are opposing
Let's change that: get in touch with your MEPs:
fightchatcontrol.eu#contact-tool
Fight Chat Control - Protect Digital Privacy in the EU
Learn about the EU Chat Control proposal and contact your representatives to protect digital privacy and encryption.
fightchatcontrol.eu
August 12, 2025 at 7:36 AM
Great (and sad) overview on the current state of #ChatControl
fightchatcontrol.eu
As of today, only #Austria, #Netherlands and #Poland are opposing
Let's change that: get in touch with your MEPs:
fightchatcontrol.eu#contact-tool
fightchatcontrol.eu
As of today, only #Austria, #Netherlands and #Poland are opposing
Let's change that: get in touch with your MEPs:
fightchatcontrol.eu#contact-tool
Reposted by simmac
You just want a safe place for your photos.No tracking. No ads. No surprises.
With Zeitkapsl, your memories are:
✅ end-to-end encrypted
✅ only visible to you (and who you choose)
✅ accessible on iOS, Android, desktop & web
#opensource #zeitkapsl #new #app #opensourcesoftware #ai #dsgvo #europe
With Zeitkapsl, your memories are:
✅ end-to-end encrypted
✅ only visible to you (and who you choose)
✅ accessible on iOS, Android, desktop & web
#opensource #zeitkapsl #new #app #opensourcesoftware #ai #dsgvo #europe
August 11, 2025 at 4:27 PM
You just want a safe place for your photos.No tracking. No ads. No surprises.
With Zeitkapsl, your memories are:
✅ end-to-end encrypted
✅ only visible to you (and who you choose)
✅ accessible on iOS, Android, desktop & web
#opensource #zeitkapsl #new #app #opensourcesoftware #ai #dsgvo #europe
With Zeitkapsl, your memories are:
✅ end-to-end encrypted
✅ only visible to you (and who you choose)
✅ accessible on iOS, Android, desktop & web
#opensource #zeitkapsl #new #app #opensourcesoftware #ai #dsgvo #europe
Reposted by simmac
Altman:
"With GPT-5, now it's like talking to an expert, a legitimate PhD-level expert in anything, in any area you need."
(Habs ausprobiert um sicherzugehen, dass die Maschinen nicht übernehmen - eine Grafik aller AT-BundeskanzlerInnen, Prompts im Alt-Text. Hier schon mit US-Präsidenten gesehen.)
"With GPT-5, now it's like talking to an expert, a legitimate PhD-level expert in anything, in any area you need."
(Habs ausprobiert um sicherzugehen, dass die Maschinen nicht übernehmen - eine Grafik aller AT-BundeskanzlerInnen, Prompts im Alt-Text. Hier schon mit US-Präsidenten gesehen.)
August 9, 2025 at 9:17 AM
Altman:
"With GPT-5, now it's like talking to an expert, a legitimate PhD-level expert in anything, in any area you need."
(Habs ausprobiert um sicherzugehen, dass die Maschinen nicht übernehmen - eine Grafik aller AT-BundeskanzlerInnen, Prompts im Alt-Text. Hier schon mit US-Präsidenten gesehen.)
"With GPT-5, now it's like talking to an expert, a legitimate PhD-level expert in anything, in any area you need."
(Habs ausprobiert um sicherzugehen, dass die Maschinen nicht übernehmen - eine Grafik aller AT-BundeskanzlerInnen, Prompts im Alt-Text. Hier schon mit US-Präsidenten gesehen.)
Reposted by simmac
I’m playing a CTF with my bestie, as one does, and she pointed out that challenges that use generative AI violate the cardinal rule of CTFs, which is that everything that is in there is there because someone put it there on purpose
As a longtime player and author, that is genuinely really upsetting
As a longtime player and author, that is genuinely really upsetting
August 8, 2025 at 10:53 PM
I’m playing a CTF with my bestie, as one does, and she pointed out that challenges that use generative AI violate the cardinal rule of CTFs, which is that everything that is in there is there because someone put it there on purpose
As a longtime player and author, that is genuinely really upsetting
As a longtime player and author, that is genuinely really upsetting
Reposted by simmac
Wir brauchen dringend einen Staatstrojaner um schwerste Verbrechen, wie etwa Verstöße gegen das Kärntner Campingplatzgesetz in Zukunft verhindern zu können.
July 29, 2025 at 9:39 AM
Wir brauchen dringend einen Staatstrojaner um schwerste Verbrechen, wie etwa Verstöße gegen das Kärntner Campingplatzgesetz in Zukunft verhindern zu können.
Reposted by simmac
Are you a photographer, maybe even working with sensitive photos such as boudoir, nude or family shoots, looking for an alternative to WeTransfer?
With our end-to-end encrypted🔐 solution, we can never train AI on your photos. Even if we wanted to (we promise, we don't)
zeitkapsl.eu/en/photograp...
With our end-to-end encrypted🔐 solution, we can never train AI on your photos. Even if we wanted to (we promise, we don't)
zeitkapsl.eu/en/photograp...
Your encrypted photo and video storage | zeitkapsl
The European alternative – Store, share, and organize your valuable memories with absolute privacy. Protect your photos from prying eyes.
zeitkapsl.eu
July 16, 2025 at 12:59 PM
Are you a photographer, maybe even working with sensitive photos such as boudoir, nude or family shoots, looking for an alternative to WeTransfer?
With our end-to-end encrypted🔐 solution, we can never train AI on your photos. Even if we wanted to (we promise, we don't)
zeitkapsl.eu/en/photograp...
With our end-to-end encrypted🔐 solution, we can never train AI on your photos. Even if we wanted to (we promise, we don't)
zeitkapsl.eu/en/photograp...
Reposted by simmac
🕵️♂️ Maybe you should read the privacy policy: Meta now asks to scan your unshared photos to train its AI - tucked away in the fine print.
📰 TechCrunch article by @sarahp.bsky.social
techcrunch.com/2025/06/27/f...
At @zeitkapsl.eu, we keep things simple: 🔐 #E2EE.
Read ours: 👉 zeitkapsl.eu/en/privacy
📰 TechCrunch article by @sarahp.bsky.social
techcrunch.com/2025/06/27/f...
At @zeitkapsl.eu, we keep things simple: 🔐 #E2EE.
Read ours: 👉 zeitkapsl.eu/en/privacy
Facebook is asking to use Meta AI on photos in your camera roll you haven't yet shared | TechCrunch
By clicking "Allow," you'll let Facebook generate new ideas from your camera roll, like collages, recaps, AI restylings, or photo themes.
techcrunch.com
July 8, 2025 at 5:49 AM
🕵️♂️ Maybe you should read the privacy policy: Meta now asks to scan your unshared photos to train its AI - tucked away in the fine print.
📰 TechCrunch article by @sarahp.bsky.social
techcrunch.com/2025/06/27/f...
At @zeitkapsl.eu, we keep things simple: 🔐 #E2EE.
Read ours: 👉 zeitkapsl.eu/en/privacy
📰 TechCrunch article by @sarahp.bsky.social
techcrunch.com/2025/06/27/f...
At @zeitkapsl.eu, we keep things simple: 🔐 #E2EE.
Read ours: 👉 zeitkapsl.eu/en/privacy
Reposted by simmac
🧪 Beta testers wanted!
We’re building a Google Photos importer for our desktop app—but haven’t used Google Photos in years, so our test data is basically “hello-world.jpg”.
🔐 Got 1000s of photos/videos? Help us test & get 3 months free!
💬 DM if you're in!
#zeitkapsl #E2EE #madeInEU #GooglePhotos
We’re building a Google Photos importer for our desktop app—but haven’t used Google Photos in years, so our test data is basically “hello-world.jpg”.
🔐 Got 1000s of photos/videos? Help us test & get 3 months free!
💬 DM if you're in!
#zeitkapsl #E2EE #madeInEU #GooglePhotos
July 4, 2025 at 7:48 AM
🧪 Beta testers wanted!
We’re building a Google Photos importer for our desktop app—but haven’t used Google Photos in years, so our test data is basically “hello-world.jpg”.
🔐 Got 1000s of photos/videos? Help us test & get 3 months free!
💬 DM if you're in!
#zeitkapsl #E2EE #madeInEU #GooglePhotos
We’re building a Google Photos importer for our desktop app—but haven’t used Google Photos in years, so our test data is basically “hello-world.jpg”.
🔐 Got 1000s of photos/videos? Help us test & get 3 months free!
💬 DM if you're in!
#zeitkapsl #E2EE #madeInEU #GooglePhotos
Reposted by simmac
my heart goes out to the highest bidder
June 30, 2025 at 4:39 PM
my heart goes out to the highest bidder
Reposted by simmac
Simeon our security engineer at #zeitkapsl attended #IDSF (International digital security forum) in #Vienna this week.
We have also met our friends from #pwndlabs there.
We have also met our friends from #pwndlabs there.
June 6, 2025 at 1:49 PM
Simeon our security engineer at #zeitkapsl attended #IDSF (International digital security forum) in #Vienna this week.
We have also met our friends from #pwndlabs there.
We have also met our friends from #pwndlabs there.
Reposted by simmac
I want my code to be understandable to idiots with limited context, because that's also future-me.
June 3, 2025 at 3:44 AM
I want my code to be understandable to idiots with limited context, because that's also future-me.