#0day

Live, measured metrics for the hashtag #0day from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.

hashtag.org network · sponsored

Own #0day

This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.

$2,449.80/ year · 4-character #name
Claim #0day — $2,449.80/yr→
Annual, renews each year
Buy on hashtag.space (web3)
one-timepay once, yours for life
card via hashtag.org · tokens via hashtag.space
5
Uses / 7 days
Mastodon
5
Accounts / 7 days
Mastodon
40
Recent posts
Mastodon
~0/hr
Recent pace
Mastodon · last 40
0.7
Avg reactions / post
Mastodon · last 40

Day-by-day usage

measured · fosstodon.org (Mastodon public tags API) · fetched 2026-07-27 02:27 UTC
1
07-21
2
07-22
1
07-23
1
07-24
0
07-25
0
07-26
0
07-27

5 uses by 5 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.

Related hashtags

measured · fosstodon.org (Mastodon public search API) · fetched 2026-07-27 02:27 UTC
#cursor0day
0 uses · 0 accounts / 7d
#windows0day
0 uses · 0 accounts / 7d
#0day_syndicate
0 uses · 0 accounts / 7d
#day0
0 uses · 0 accounts / 7d
#glassof0day
0 uses · 0 accounts / 7d
#not0day
0 uses · 0 accounts / 7d
#Recipe0fTheDay
0 uses · 0 accounts / 7d
#DevDay0
0 uses · 0 accounts / 7d
#gab0day
0 uses · 0 accounts / 7d
#0DayPowered
0 uses · 0 accounts / 7d
#Cit0Day
0 uses · 0 accounts / 7d
#Zer0DayLabCrew
0 uses · 0 accounts / 7d

Live pulse

measured · mastodon.social (Mastodon tag timeline) · fetched 2026-07-27 02:27 UTC

Everything below is measured over the latest 40 public posts (spanning ~1179 hours).

Posting hours (UTC) — busiest: 17:00

00:0012:0023:00

Languages: English (20) · German (11) · French (4) · Chinese (2) · Danish (2) · Chinese (China) (1)

Avg boosts / post: 1.2

Top of the latest posts

  • A proposed change to the German Intelligence Services Law (#BND-Gesetz) would--if enacted--require #cybersecurity authorities to notify any #0day to the German foreign and domestic intelligence service to that they can abuse it until it's f

    Jan Penfrat@[email protected]♥ 6↻ 72026-07-10 07:24 UTCView post →

  • Microsoft Flickentag 2026-07: Rekord der Rekorde. Weitere Steigerungen fallen mir nicht mehr ein. Brachte schon der Flickentag im vorigen Monat einen Allzeit-Rekord, so hat Microsoft (MS) die Anzahl der Flicken jetzt noch mal mehr als verdr

    Christoph Schmees@[email protected]♥ 3↻ 12026-07-15 09:46 UTCView post →

  • Casual #0day dropped for #AffiNE users: https://github.com/toeverything/AFFiNE/issues/15121

    Maxime Thiebaut@[email protected]♥ 3↻ 02026-06-17 17:52 UTCView post →

Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/0day