X41 D-Sec GmbH Add us as a preferred source on Google
🔄 Data last refreshed 7 days ago
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Make a deal with X41 D-Sec GmbH
🔒 Paid proposals held safely in escrow — released only when the work's approved.
Followers
109
Account age
2 yrs
💰 Suggested sponsorship rate
$40 – $65 / sponsored post
Estimated from audience size & typical reach — every deal is negotiable and held in SocialDB escrow.
🎁 Free analysisfor X41 D-Sec GmbH
📊 Post engagement
Recent posts · likes + reposts
Feb 14latest
16
Avg engagement / post
5–24
Typical post (engagement)
14.7%
Engagement vs followers
62/100
Consistent reach
Jan 2024
On Mastodon since
Half of recent posts land between 5 and 24 likes + reposts (median 13) — a dependable floor a sponsored post can count on.
🔥 Top post: We just published our research on the use of power side channel · 42 likes + reposts
📊 Activity & format
Posting cadence
0.09 / week
A lower-frequency account — each post lands with more weight.
Content mix
Mostly text
Recent: 11 text · 1 image · 0 video.
Follower / following
55×
Follows 2 back. A strong ratio — an audience that follows them, not a follow-for-follow network.
Recent posts
View on Mastodon ↗
Markus presenting at off by one Singapore
There's an update for the Starlette issue: We've scanned thousands of hosts for CVE-2026-48710 and found something important: Being behind a proxy or CloudFlare isn't always a protection unlike previously stated!
When a reverse proxy or CD…
@mullvadnet blogpost can be found at https://mullvad.net/en/blog/new-security-audit-of-account-and-payment-services
After auditing the @mullvadnet client applications in 2024, we have recently audited Mullvad VPN's API.
The API is used by clients, partners, and internal services to manage user accounts and parts of the VPN infrastructure.
Five issues we…
https://x41-dsec.de/security/training/tableopt/exercise/2025/03/12/tabletop-exercises/
What are Tabletop Exercises (TTX) and why they matter to companies.
X41 performed an audit of Hickory DNS which is an open source Rust based DNS client, server, and resolver. We were sponsored by the great folks at @ostifofficial and supported by @ProssimoISRG
Our full report can be downloaded here: https:…
X41 Reviewed Mullvad VPN
https://x41-dsec.de/news/2024/12/11/mullvad/
Many thanks to the @mullvadnet team for the professional and good interaction during this audit!
X41 released two advisories this week, one for Antragsgrün https://x41-dsec.de/lab/advisories/x41-2024-002-antragsgruen/ and one for chilkat https://x41-dsec.de/lab/advisories/x41-2024-003-chilkat-asn1/
Chilkat PRNG Vulnerability Impact on E2EE Messenger ginlo https://x41-dsec.de/news/2024/04/09/ginlo/
Advisory X41-2024-001: Weak Chilkat PRNG
https://x41-dsec.de/lab/advisories/x41-2024-001-chilkat-prng/
X41 reviewed the source code of BIND9 for security issues on behalf of the @iscdotorg . More details and the full report are available here:
https://www.x41-dsec.de/news/security/research/source-code-audit/2024/02/13/bind9-security-audit
🐘 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.
On Mastodon since
Jan 2024
An established account with real history on the platform.
💡 Facts
🗓️Joined Mastodon in 2024 — 2 years ago.
👁️Averages 16 views per post.
📤Posts about 0.1× per week.
🕵️ Fake follower check
Estimated61/100
Fair
Credibility score
84%
Real
Real audience
Low
Fake-follower risk
High
Data confidence
- Est. 84% real, active audience · Low fake-follower risk.
- Engagement (~0.1× of followers engage each post) is around typical for Mastodon.
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
💚 Brand affinity
EstimatedBrands X41 D-Sec GmbH's audience is most likely to respond to — from detected sponsorships in this niche.
About
X41 D-Sec GmbH is an expert provider for application security services. Custom research and a IT security consulting and support services are core competencies of X41 D-Sec GmbH.
🔀 Audience overlap
EstimatedEstimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.
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Frequently asked questions
How much does X41 D-Sec GmbH charge for a sponsorship?
X41 D-Sec GmbH hasn't published fixed prices yet. Send a proposal through SocialDB and agree terms directly — your payment is held in escrow until the work is approved.
How do I contact X41 D-Sec GmbH for a brand deal or collaboration?
Send a paid deal or collab request right here on SocialDB — we notify X41 D-Sec GmbH, and once they accept, your payment is held safely in escrow and released when the work is approved. You don't need to track down an email.
How many followers does X41 D-Sec GmbH have?
X41 D-Sec GmbH has 109 followers on Mastodon.
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