Disclosure context

About nightspire

Nightspire is a ransomware group that first emerged in March 2025 and appears to be primarily financially motivated, having targeted over 215 victims in a relatively short operational timeframe. The group's origin and affiliations remain unclear due to limited public documentation from major cybersecurity organizations, though their targeting patterns suggest a broad opportunistic approach rather than nation-state backing. Based on available victim data, Nightspire appears to employ common ransomware attack vectors targeting organizations across multiple sectors, with a particular focus on manufacturing, technology, healthcare, and construction industries, while demonstrating a geographic preference for victims in the United States, India, Taiwan, France, and Hong Kong. The group's rapid victim acquisition rate since their March 2025 emergence suggests an active and potentially effective operational capability, though specific technical details about their attack methodology, encryption techniques, or extortion tactics have not been publicly documented by major threat intelligence firms. Given the recent emergence of this group and limited public reporting from established cybersecurity organizations like CISA, FBI, or Mandiant, Nightspire remains an active threat with insufficient public documentation to fully assess their operational sophistication or organizational structure. The group has been linked to 265 public disclosures across our corpus. First observed on a leak site on March 12, 2025; most recent post May 18, 2026. The operation is currently active.

Timeline of this disclosure

April 14, 2026BK Tomorrow listed by nightspireon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Not Found sector, which has 4,859 disclosures indexed across all operators we track. Geographically, BK Tomorrow is reported in US, a country with 2,713 ransomware disclosures in our corpus.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.

Ransomware victim disclosure

← All victims

BK Tomorrow (BK Mobil)

listed as BK Tomorrow · Claimed by nightspire · listed 1 month ago

36d

Age

since listed · data leaked

Status timeline

Listed
Apr 14, 2026
Data leaked

At a glance

Group: nightspire
Status: Data leaked
Country: US
Sector: Not Found
Listed on leak site: Apr 14, 2026

About the victim

AI dossier — public-source company profile

BK Tomorrow, operating under the brand BK Mobil, is a Turkish education technology company headquartered at Ankara Teknoloji Geliştirme Bölgesi (Bilkent Technopark). The company develops AI-powered and adaptive digital learning platforms — including Metodbox, Metodbox AI (LLM-based), STEM/project-based learning tools, augmented reality education apps, and university/high school exam preparation platforms. Its stated mission is to train young scientists and position Turkey as a global technology leader through innovative educational systems.

Industry: Education Technology (EdTech) Software & Platforms
Address: Ankara Teknoloji Geliştirme Bölgesi, Cyberplaza C Blok 3 Kat, BK Mobil No:354, 06800 Bilkent Çankaya / Ankara, Turkey
Founded: 2020

Attack summary

Severity: high — Confirmed exfiltration and publication of proprietary source code constitutes significant business data loss; source code exposure can enable further attacks, IP theft, and compromise of downstream users of the company's educational platforms.

The Nightspire ransomware group claims to have exfiltrated the source code of BK Tomorrow and has published the data. No ransom amount or file size was disclosed.

high

Data the group says was taken

AI dossier — extracted from the leak post

Source code of BK Tomorrow / BK Mobil platforms

What the group claims

Source Code of BK Tomorrow

Sources

Victim sitewww.bktomorrow.com/en

Source

Indexed 1 month ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.