Was TINYpulse NINTENDO BREACH hit by ransomware?

TINYpulse NINTENDO BREACH was listed by the ShadowByt3$ ransomware operation (Japan), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the ShadowByt3$ ransomware group?

ShadowByt3$ is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the TINYpulse NINTENDO BREACH breach?

ShadowByt3$ published data attributed to TINYpulse NINTENDO BREACH. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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TINYpulse NINTENDO BREACH

Claimed by ShadowByt3$ · listed 2 months ago

Age

since listed · data leaked

Status timeline

ListedJun 16, 2026
Data leakeddate unknown

At a glance

Group: ShadowByt3$
Status: Data leaked
Country: Japan
Sector: Technology
Listed on leak site: Jun 16, 2026

What the group claims

This will be quick. You don't even want to read the private messages as some will be embarrasing. Some people are confused but this breach doesn't affect you unless if you use tinypulse and work for nintendo. There will be more victims coming soon. If you get a email by us. by us we mean are only email on are leak site, then respond or it will get leaked. We will send file trees for confirmation to prove we actually breached your company. It's pretty funny how companies are defending themselves and when the truth comes out now they want to stay quiet. We have no further questions to answer. This is a warning to all companies if you get breached by us, It's best to contact us especially if we show you the file size. This was true negligence and now you will likely face a massive lawsuit, have fun tinypulse and told you this would be quick. uncompressed file size: (856MB) compressed size: (6.89MB) The included data includes: - full name, first name, last name, email (the w9 is only one and multiple invoices) - Private Employee Chats: Direct internal messages and conversations between workers. - Mar 10, 2025 Sure, it's Knowledge Team—we've needed more content creators for years, but it seems all we can ever get approved are more associates, often temporarily. This helps some, and I know there are vague rumors that maybe we will be able to swap our associates over to NOA employees in the future, but that's not what we need—we need more writers so that we can distribute the primary work among more people. overworking chat: Sep 22, 2025 How happy are you at work? 3 I'm generally extremely content, but the overwhelming number of overlapping high-priority projects and a constant stream of meetings, has left me with little to no available occupancy. This has made it tough to manage everything effectively and still make time for innovation.

Sources

Victim sitenintendo.com
Leak posthttps://anonfilesnew.com/2Tyhn8IdmrB/tinypulse_nintendo_breach.7z.7z

Source

Indexed 2 months 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.

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Disclosure context

About ShadowByt3$

ShadowByt3$ is an emerging ransomware group that was first observed in February 2026, appearing to be financially motivated based on its ransomware operations. The group's country of origin and any potential affiliations with other cybercriminal organizations remain unknown due to limited intelligence available on this newly identified threat actor. Given the minimal public documentation available, the group's attack methodology, tools, and operational tactics have not been sufficiently analyzed or reported by major cybersecurity firms or government agencies. No notable campaigns, high-profile victims, or significant ransoms have been publicly documented by CISA, FBI, Mandiant, or other reputable security researchers, with only one known victim reported to date and no specific sector targeting patterns identified. The current operational status of ShadowByt3$ remains unclear due to the limited intelligence available on this recently emerged and relatively unknown ransomware operation. The group has been linked to 21 public disclosures across our corpus. First observed on a leak site on February 25, 2026; most recent post August 25, 2026. The operation is currently active.

Timeline of this disclosure

June 16, 2026TINYpulse NINTENDO BREACH listed by ShadowByt3$on the group's public leak site

Other recent disclosures by ShadowByt3$

ShadowByt3$ has been linked to 21 public victims on Darkfield. A sample of the most recent:

See the full ShadowByt3$ dossier →

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 3,573 disclosures indexed across all operators we track. Geographically, TINYpulse NINTENDO BREACH is reported in Japan, a country with 89 ransomware disclosures in our corpus.

If your organisation is affected

A listing by ShadowByt3$ means TINYpulse NINTENDO BREACH appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
Report the incident to your national CERT, JPCERT/CC (Japan), as required for your jurisdiction.
Monitor for the data appearing on ShadowByt3$'s leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

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.