Jannik Hollenbach✓ Add us as a preferred source on Google
🔄 Data last refreshed 25 days ago
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Make a deal with Jannik Hollenbach
👋 Unclaimed listing — auto-generated from public data; rates are estimates, not set by the creator. 🔒 Paid proposals held safely in escrow — released only when the work's approved.
Followers
79
Account age
3 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 Jannik Hollenbach
Known for
6 views
MultiJuicer 8 will have fancy animations for the Score Overview 😊
5 views
Starting with MultiJuicer v8, updates to the MultiJuicer ScoreBoard will also show up instantly after a challenge is solved 🚀
https://github.com/juice-shop/multi-juicer
4 views
Got a nice @secureCodeBox logo printed by @hacksilon for the OWASP secureCodeBox and friends assembly at #38c3 😊
3 views
@secureCodeBox #38c3 assembly is assembled 😊
Come by if you want to chat!
https://38c3.c3nav.de/l/owasp-securecodebox/@0,153.99,144.63,4.57
📊 Post engagement
Recent posts · likes + reposts
Nov 21latest
5
Avg engagement / post
2–6
Typical post (engagement)
6.3%
Engagement vs followers
73/100
Consistent reach
Nov 2022
On Mastodon since
Half of recent posts land between 2 and 6 likes + reposts (median 4) — a dependable floor a sponsored post can count on.
🔥 Top post: I’ve been nominated for the OWASP WASPY „Project Person“ Award t · 11 likes + reposts
📊 Activity & format
Posting cadence
0.2 / week
A lower-frequency account — each post lands with more weight.
Content mix
Mostly text
Recent: 7 text · 3 image · 2 video.
Follower / following
0.4×
Follows 213 back. A more reciprocal / networked account.
Recent posts
View on Mastodon ↗
@r0b1n_5 got the pattern shaders working for the MultiJuicer CTF globe :)
Might switch to a different pattern lib later, they could look a bit more interesting. But at least it is working pretty well so far.
Nice to see ZAP getting a new spider that can handle @owasp_juiceshop better 🙌
https://infosec.exchange/@zaproxy/113946790930979648
MultiJuicer v8 has been released 😊
v8 has been a lot of work, to rewrite the server side components from JavaScript to golang. MultiJuicer now needs a lot less dependencies to be build and consumes less resources to run.
https://github.com…
MultiJuicer is up and running. You can use https://38c3.multi-juicer.app/ to start yourself a JuiceShop instance on the raspberrypis 😊
@owasp_de gibt es jetzt eigentlich schon Pläne für nen semi offizielles OWASP Germany meetup auf dem #38c3? 😊
@secureCodeBox #38c3 assembly is assembled 😊
Come by if you want to chat!
https://38c3.c3nav.de/l/owasp-securecodebox/@0,153.99,144.63,4.57
Got a nice @secureCodeBox logo printed by @hacksilon for the OWASP secureCodeBox and friends assembly at #38c3 😊
All in all release v8 is nearly done. Only have a couple smaller tweaks left to do 🤞
Was really interesting building it. It’s using a http long polling mechanism (not web sockets, but long running requests that wait until an update takes place until responding)
It’s also using Kubernetes watchers to get notified on changes…
▶
Starting with MultiJuicer v8, updates to the MultiJuicer ScoreBoard will also show up instantly after a challenge is solved 🚀
https://github.com/juice-shop/multi-juicer
▶
MultiJuicer 8 will have fancy animations for the Score Overview 😊
🐘 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 5 views per post.
📤Posts about 0.2× per week.
🕵️ Fake follower check
Estimated75/100
Good
Credibility score
92%
Real
Real audience
Low
Fake-follower risk
High
Data confidence
- Est. 92% real, active audience · Low fake-follower risk.
- Engagement (~6.3% of followers engage each post) is around typical for Mastodon.
- Verified account.
- Established account (3+ years old).
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
About
Project Lead for OWASP Juice Shop 🧃 and OWASP secureCodeBox 🔒
📸 Gallery
🔀 Audience overlap
EstimatedEstimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.
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Jannik Hollenbach has 79 followers on Mastodon.
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