Ransomware

KOIKE Sanso Kogoyo Co.

Location not known1 source

ClaimedExitium says it has data from KOIKE Sanso Kogoyo Co.. KOIKE Sanso Kogoyo Co. has not confirmed it. No confirmation after 32 days.

KOIKE Sanso Kogoyo Co. Ltd. claimed by Exitium

Claimed by Exitium on its leak site.

Open the live map Am I affected?

Location not known.

Sector: Manufacturing
Records affected: 5.8K GB, claimed by the attackers
Claimed by: Exitium
First reported: 12 Oct 2026
Latest source: 12 Oct 2026

What is known

Confirmed

No confirmed figure

Claimed

5,800 GB

Claimed by Exitium. Not verified.

Data involved

Data types not stated

Cause

Cause not stated

Claimed: 12 Oct 2026
First seen by Black Shard: 9 Nov 2026

Sources

Leak-site claim by Exitium, tracked by RansomLook12 Oct 2026Listed on Exitium's leak site.

Status timeline

12 Oct 2026
Leak-site claim by Exitium, tracked by RansomLook
12 Oct 2026
Status: claimed

Attacker group

Exitium
Claimed by the group on its leak site, 12 Oct 2026.

What to do

This is only a claim by the attackers so far. There is no need to panic, but the basics are worth doing.

Expect delays if you rely on this organisation's services, and keep records of anything you are owed.
If you have an account, change that password, and anywhere you reused it.

Talk to our team 24/7 incident line: 1800 370 270

How sure we are

That it happened as stated 10%

The place 0%

1 independent source. Location not known.

Not known yet

Attack dateData involvedA statement from the organisation

Update log

9 Nov 2026First seen.

Under attack? Call the incident line.

Black Shard's team can check your exposure, take a fix off your plate or step in on a live incident.

Talk to our team Breach response

24/7 incident line1800 370 270Call first, then work through the first-hour steps.