ZERO DAY
Investor Due Diligence Report
by Kim Zetter
ghostTechnology
Stories about cybersecurity and national security
6K
~0%
Subscriber count is a platform estimate
Pricing
$10/mo
$100/yr annual option
$4K
~420 est. paid subs
$2K/mo – $6K/mo(±50%)
0.5
0.01%
(comments + likes) / subscribers
Bi-weekly
0.4 posts/week
44/100
Variable (~19.0d avg)
| Newsletter | Subscribers | Weekly Growth | Price | Platform |
|---|---|---|---|---|
| Box of Amazing | 23K | N/A | Free | substack |
| Better Engineers | 20K | N/A | $20/mo | substack |
| HackerPulse Dispatch | 18K | N/A | Free | substack |
| Cafétech | 18K | N/A | Free | substack |
| Month | Subscribers | Est. Revenue | Change |
|---|---|---|---|
| Feb 2026 | 6.5K | $4,019.17 | — |
| Mar 2026 | 5.5K | $3,400.83 | -15.4% |
| Apr 2026 | 8K | $4,946.67 | +45.5% |
| May 2026 | 7K | $4,328.33 | -12.5% |
| Jun 2026 | 6K | $3,710 | -14.3% |
Platform Dependency
Uses ghost platform
Publishing Consistency
Variable publishing frequency
Key Person
Single-author publication — key-person dependency
Revenue Model
Active paid subscription tier
Subscriber threshold
6K subscribers — above the 2K category median for first paid tier
Has paid tier
Active paid subscription offering
Peer monetization
100% of 90 similar-size peers in Technology have paid tiers
Pricing position
$10/mo vs $5/mo category median (783 newsletters)
| Date | Monthly | Annual |
|---|---|---|
| Feb 2026 | $10 | $100 |
Disclaimer: This report is generated automatically based on publicly available data and proprietary estimation models. Estimated subscriber counts are derived from engagement patterns and should be verified through direct disclosure. Revenue estimates are based on known pricing and estimated paid subscriber counts. This report is for informational purposes only and should not be the sole basis for investment decisions.
| Component | Score | Weight |
|---|---|---|
| Engagement Rate | 47/100 | 30% |
| Publishing Consistency | 79/100 | 10% |
| Entra.News - Your weekly dose of Microsoft Entra |
| 17K |
| N/A |
| $5/mo |
| substack |