#ZeroDay

Live, measured metrics for the hashtag #ZeroDay 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 #zeroday

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.

$240.06/ year · 7-character #name
Claim #zeroday — $240.06/yr→Buy on hashtag.space (web3)
card via hashtag.org · tokens via hashtag.space
40
Uses / 7 days
Mastodon
24
Accounts / 7 days
Mastodon
40
Recent posts
Mastodon
~0.3/hr
Recent pace
Mastodon · last 40
0
Avg reactions / post
Mastodon · last 40
—
Reddit posts / month
Reddit search
—
Open-web mentions
hashtag.org Firehose

Day-by-day usage

measured · fosstodon.org (Mastodon public tags API) · fetched 2026-09-09 02:51 UTC
8
09-03
4
09-04
7
09-05
0
09-06
7
09-07
9
09-08
5
09-09

40 uses by 24 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 2026-09-09 02:51 UTC
#zerodays
0 uses · 0 accounts / 7d
#zerodayssince
0 uses · 0 accounts / 7d
#zerodaysecurity
0 uses · 0 accounts / 7d
#zerodayvulnerability
0 uses · 0 accounts / 7d
#zerodayexploits
0 uses · 0 accounts / 7d
#zerodayclock
0 uses · 0 accounts / 7d
#ZeroDayVulnerabilities
0 uses · 0 accounts / 7d
#zerodayexploit
0 uses · 0 accounts / 7d
#zerodaypodcast
0 uses · 0 accounts / 7d
#zerodaywhodunit
0 uses · 0 accounts / 7d
#zerodayworkweek
0 uses · 0 accounts / 7d
#zerodayssincewhitenonsense
0 uses · 0 accounts / 7d

Live pulse

measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-09-09 02:51 UTC

Everything below is measured over the latest 40 public posts (spanning ~139 hours).

Posting hours (UTC) — busiest: 16:00

00:0012:0023:00

Languages: English (36) · Italian (3) · German (1)

Avg boosts / post: 0.2

Top of the latest posts

  • #Microsoft Plugs Nearly 1,000 #Security Holes This month’s #patch bundle obliterates the software giant’s previous record set in July, when it released updates for at least 570 security #vulnerabilities. September’s #PatchTuesday brings thi

    PrivacyDigest@[email protected]♥ 0↻ 02026-09-09 02:50 UTCView post →

  • Chrome's two-week release cycle begins with Chrome 153, doubling the pace of features and security patches while Extended Stable stays at 8 weeks. #Chrome #Google #BrowserSecurity #Gemini #ZeroDay #WebSecurity #ChromeUpdate https://security

    Daily CyberSecurity@[email protected]♥ 0↻ 02026-09-09 01:52 UTCView post →

  • N-able didn't beat around the bush: Since our post 9/5/2026, 08:11:00 UTC a third independent researcher disclosed to N-able a new vulnerability— one that has been exploited in the wild and is unrelated to the previously disclosed CVEs. Thi

    ssvc@[email protected]♥ 0↻ 32026-09-09 01:37 UTCView post →

#zeroday across platforms

every network with a public tag surface

Follow #zeroday straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.

X (Twitter) ↗Instagram ↗TikTok ↗Facebook ↗LinkedIn ↗YouTube ↗Threads ↗Bluesky ↗Mastodon ↗Reddit ↗Pinterest ↗Tumblr ↗

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/zeroday