john stack

LearnerConnectorCurator@johncybstack

Short cybersecurity explainers, a Lightning developer bootcamp in Addis Ababa, and tech community meetups in between.

Hey everyone 🙌, I’m Yohannes. Just getting started. Every great startup starts with a problem worth solving. :) @plxy30 👈 DM for any Q

john stack

@johncybstack· 320

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Overview Journey Start here Their words Latest posts

The channel, now called john stack, opened at the end of April 2026 to share blockchain, cybersecurity, coding, opportunities and the things being built along the way. Expect short security explainers mixed with posts from hackathons and community meetups. In July it announced a spot in the Africa Free Routing Lightning Developer Bootcamp, adding Bitcoin and Lightning to the mix. In October it began a six-month lock-in, posting motion design, visual effects and editing work.

Posting activity

7.8posts a week

239 posts in 26 weeks

26 weeks agothis week

Active since Apr 2026Longest streak 26 wk26-week streak going

Busiest time

All Hours

Peaks around 6pm

Projects

0 shipped

Language

English

90% English · 3% Amharic

Posts read

248

Favourite emoji 😁

It has posted at least once a week for 26 weeks in a row, and that streak is still running.
Forwards make up 44 percent of posts, so a good share of the feed is the wider community's event recaps and news.
Its favorite word is "day", which shows up in everything from gm posts to event recaps.

The journey.

Apr – May 2026
Hello, tech fest
The channel opened at the end of April with a welcome post promising blockchain, cybersecurity, coding, opportunities and lessons. May filled up with events: a panel discussion with co-founders and CEOs at the GDG on Campus AASTU Generations Tech Fest, and a day out with a crowd of fellow creators.
Sources#4 #17 #58
Jun – Jul 2026
Explainer mode
In June and July the channel posted bite-sized tech explainers: the moth behind the word "bug", the final part of a series on the Haystak dark-web search index, and a reminder that most security problems live in the parts users never see.
Sources#85 #105 #187
Jul – Aug 2026
A new name and a Lightning bootcamp
In July the channel took the name john stack, then announced a spot in the Africa Free Routing Lightning Developer Bootcamp in Addis Ababa and nudged followers to apply before the deadline. In late August it shared that it was verified on There's An AI For That, describing its focus as AI, cybersecurity, reverse engineering and Bitcoin/Lightning.
Sources#137 #193 #194 #263
Oct 2026
Pitches and a lock-in
October brought a pitching session and good conversations with the team at Vaironect, plus a meeting with the founder of Dineflow. Then the channel kicked off a six-month lock-in to post motion design, visual effects and editing work, and by day two it was already asking followers what they thought.
Sources#337 #338 #350 #360