#ctf

Live, measured metrics for the hashtag #ctf 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 #ctf

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.

$5,313.74/ year · 3-character #name
Claim #ctf — $5,313.74/yr→Buy on hashtag.space (web3)
card via hashtag.org · tokens via hashtag.space
23
Uses / 7 days
Mastodon
20
Accounts / 7 days
Mastodon
40
Recent posts
Mastodon
~0.1/hr
Recent pace
Mastodon · last 40
0.1
Avg reactions / post
Mastodon · last 40
—
Reddit posts / month
Reddit search
—
Open-web mentions
hashtag.org Firehose

Day-by-day usage

measured · mastodon.online (Mastodon public tags API) · fetched 2026-10-29 02:03 UTC
4
10-23
4
10-24
2
10-25
5
10-26
4
10-27
4
10-28
0
10-29

23 uses by 20 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.

Related hashtags

measured · mastodon.social (Mastodon public search API) · fetched 2026-10-29 02:03 UTC

No related tags with measured usage found for #ctf.

Live pulse

measured · mastodon.online (Mastodon tag timeline) · fetched 2026-10-29 02:03 UTC

Everything below is measured over the latest 40 public posts (spanning ~288 hours).

Posting hours (UTC) — busiest: 22:00

00:0012:0023:00

Languages: English (33) · Spanish (4) · German (1) · Chinese (Taiwan) (1) · Dutch (1)

Avg boosts / post: 0.7

Top of the latest posts

  • The DC540 #DEFCON chapter has just released their latest #CTF! No spoilers but here it is if you were a fan of #BadgeLife Ouroboros badge at https://kbadges.com this challenge might interest you! BEHOLD THE BIRTH OF THE ASSEMBLERS! https://

    Kevin Thomas ✅@[email protected]♥ 4↻ 32026-10-26 22:30 UTCView post →

  • How a 610 Netrun team works: up to four players, four downtown Easton venues, one day. Solve puzzles, find the hidden flags, and rack up points. Scoring runs on CTFd. Top three teams take the prizes ($300, $200, $100, plus Hak5 gear and a B

    DEFCON610@[email protected]♥ 0↻ 02026-10-28 16:00 UTCView post →

  • PHP Capture the Flag (CTF) Challenge Cloudflare가 php2shell로 불리는 PHP 취약점 CVE-2026-109618과 CVE-2026-109619를 대상으로 WAF 우회 CTF를 공개했다. 참가자는 PHP 8.5.11과 Apache mod_php로 구성된 샌드박스에서 원격 코드 실행을 통해 플래그를 획득해야 한다. 제시된 업로드 요청은 탐색 예시일 뿐 실제 취약점 악용이나 WAF 우회를

    ainews@[email protected]♥ 0↻ 02026-10-28 12:41 UTCView post →

#ctf across platforms

every network with a public tag surface

Follow #ctf 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/ctf