Command Palette
Search for a command to run...
Cyber Security E-Books
A curated collection of free cybersecurity e-books available in multiple formats for unlimited download
since Jun 16, 2026 · HTTP 200
CohortClass of 2026What it is
A curated collection of free cybersecurity e-books available in multiple formats for unlimited download. Offers high-quality, colored educational materials covering various cyber security topics and concepts.
HTTP liveness
9 probes since Jun 16Jun 16Jul 13
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jun 16, 2026First probe — redirectedRedirected offsite
Discussion 0 comments
No comments yet. Be the first!
Pulse Indexobserved activity
9 probes0 pressGitHub –Tranco –
Not enough observed signals for a Pulse Index (needs 2+ signal families).
Cohort survival · Class of 2026weekly
567 products launched in 2026 · 100% still active
567 active0 sunset
Still active
100%
Median lifespan
4.9y