Sebastian Schinzel

Sebastian Schinzel✓

Mastodon @seecurity@infosec.exchange
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Make a deal with Sebastian Schinzel

🔒 Paid proposals held safely in escrow — released only when the work's approved.

📣Sponsored postOne disclosed post (toot) with your link and message. $12→ 🧵Sponsored threadA multi-post explainer or story — the fediverse rewards dept… $30→ 📦Product seeding / honest reviewSend me your product — I post a disclosed, honest take. Auth… $16→ 📌Pinned sponsored postA disclosed post pinned to the top of my profile for the mon… $36/mo→ 🔗Profile link (bio field)Your link in one of my profile metadata fields for the month… $18/mo→ 🔁Boost packageI boost (repost) your account's toots through the month — di… $24/mo→ 🏛️Instance / community sponsorshipSponsor the server I run — a sponsor line in the About/rules… $30/mo→ 🤝Mutual boost collabWe boost each other across instances — a value swap between … Swap→

Every booking is a normal escrow-protected deal.

Followers
1.3K
Account age
3 yrs

Known for

Being extra cautious here because if we fail, we’ll need to use Teams. 🫣9 views Being extra cautious here because if we fail, we’ll need to use Teams. 🫣 "In addition to fixing the 271 bugs identified by Claude Mythos Preview in the 150 release, we've shipped more of these fixes in 149.0.2, 150.0.1, and 150.0.2. We also continue to find bugs with other means internally, and, similar to other projects, we've seen a significant uptick in external reports in the last few months." https://hacks.mozilla.org/2026/05/behind-the-scenes-hardening-firefox/3 views "In addition to fixing the 271 bugs identified by Claude Mythos Preview in the 150 release, we've shipped more of these fixes in 149.0.2, 150.0.1, and 150.0.2. We also continue to find bugs with other means internally, and, similar to other projects, we've seen a significant uptick in external reports in the last few months." https://hacks.mozilla.org/2026/05/behind-the-scenes-hardening-firefox/

📊 Post engagement

7
Avg engagement / post
0.5%
Engagement vs followers
Nov 2022
On Mastodon since

🔥 Top post: RE: https://infosec.exchange/@seecurity/116528973838326581 We ar · 19 likes + reposts

📊 Activity & format

Posting cadence
1.1 / week
A lower-frequency account — each post lands with more weight.
Content mix
Mostly text
Recent: 9 text · 3 image · 0 video.
Follower / following
2.5×
Follows 520 back. A more reciprocal / networked account.

Recent posts

View on Mastodon ↗
🔥 Top post RE: https://infosec.exchange/@seecurity/116528973838326581 We are currently looking at Matrix to replace Mattermost. I got some feedback of institutions successfully using Matrix. What server implementations are you using? There are several options, with Synapse seeming a standa… ★ 19
This is what I get in Element (Mac OS Desktop). RE: https://infosec.exchange/@seecurity/116603246333682094 We are heading towards Matrix (with Synapse) and Element. One critical thing is Latex-math-mode for the math courses and it turns out Element struggles to support this. All users n… ★ 2 RE: https://infosec.exchange/@seecurity/114024782630937683 Wir haben unsere Klimaanlage vor 4 Jahren zum Heizen angeschafft und haben den Gasverbrauch um 80% reduziert. Kleiner Nebeneffekt: bei den mittlerweile üblichen Hitzewellen im Som… ★ 2 What’s the German word for regularly using LLMs and secretly being excited about the experience, but at the same time feeling too ashamed to openly speak about it? ★ 6 Looking for accounts to follow on Mastodon about agentic software engineering. Any recommendations? #followerpower ★ 4 RE: https://social.v.st/@quixoticgeek/116611731183393595 The background story of this is: academics increasingly use AI to assist in research and paper writing. This leads to flaws in the papers due to hallucinations, which are generally h… ★ 15 Being extra cautious here because if we fail, we’ll need to use Teams. 🫣 ★ 9 RE: https://infosec.exchange/@seecurity/116600479602883129 Anyone here using other Matrix servers than Synapse for >1,000 users? ★ 2 ETA für neue Rechtschreibreform, in der Kompositworte zwingend mit Bindestrich geschrieben werden müssen? Beispiel heute aus der Zeitung: Autopsietisch. ★ 1 "In addition to fixing the 271 bugs identified by Claude Mythos Preview in the 150 release, we've shipped more of these fixes in 149.0.2, 150.0.1, and 150.0.2. We also continue to find bugs with other means internally, and, similar to othe… ★ 3 Our faculty uses Mattermost heavily and many lecturer use it as the primary communication channel with students. Now Mattermost changes its licensing policy and it looks like we’ll have to switch to Teams. Any alternatives for a self-host… ★ 10

🐘 Community & instance

Home server
infosec.exchange
A cybersecurity & infosec server — its members and audience skew toward that niche, so expect a community-aligned, engaged following.
✅ Link-verified
Verified link
Proved ownership of a website linked on their profile — Mastodon's green-check verification, a real identity signal rather than a paid badge.
On Mastodon since
Nov 2022
Joined in the Twitter-exodus wave of late 2022 — part of the migration that made Mastodon a real destination.

💡 Facts

🗓️Joined Mastodon in 2022 — 3 years ago.
👁️Averages 7 views per post.
📤Posts about 1.1× per week.

🛡️ Audience credibility

75/100 Good
  • Est. 92% real, active audience · Low fake-follower risk.
  • Engagement (~0.5% of followers engage each post) is around typical for Mastodon.
  • Verified account.
  • Established account (3+ years old).
Est. authentic audience
92%
Fake-follower risk
Low
Data confidence
High

Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.

About

Husband, dad, mountain biker, professor of computer security at FH Münster and department lead @fraunhofersit. Private account.

📸 Gallery

This is what I get in Element (Mac OS Desktop). Being extra cautious here because if we fail, we’ll need to use Teams. 🫣 "In addition to fixing the 271 bugs identified by Claude Mythos Preview in the 150 release, we've shipped more of these fixes in 149.0.2, 150.0.1, and 150.0.2. We also continue to find bugs with other means internally, and, similar to other projects, we've seen a significant uptick in external reports in the last few months." https://hacks.mozilla.org/2026/05/behind-the-scenes-hardening-firefox/

🔀 Audience overlap

Estimated

Estimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.

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