Top Data Breaches of November 2026

When a country declares a state of emergency in cyberspace, breaches stop being just headlines. That was Japan last month, with more than 20 major companies and leading brands hit.

Globally, crypto companies have been hit with massive financial losses; companies like Binance have suffered losses of $6.3 billion worth of assets.

With highly regulated sectors like public finance & crypto, and critical infrastructure already under constant radar of cybercriminals, compliance pressure has also increased among organizations that are already spending millions on security.  

Here is a look at some of the top breaches of November 2026:

November latest data breach news

Let us look at some of the top data breaches of November 2026:

Victim: Shibata Co. Ltd

About

Shibata is a Shinjuku-based supplier of electronic materials that came into operation in 1995. It is known for the supply of Magnet Wire.

Industry

Electronics

What happened?

The Qilin ransomware group has claimed to have targeted Shibata Co.Ltd and listed the company on its leak site. The company has not confirmed the intrusion or data theft yet.

Impact

The nature and quantity of data exposed, records affected and operations impacted is currently not disclosed.

When was it claimed/detected/reported?

The company was listed by Qilin ransomware group on its leak site on November 1, 2026.

Source

To be continued

In October, we saw how some of the most devastating data breaches impacted some of the biggest companies. Keep checking this space as we update our list of November’s top data breaches with a closer look at how they happened and their impact.

Note: Our list only highlights the breaches that have either occurred in 2026 or been reported/disclosed in 2026. All breaches reported in previous years, as of 2026, will be excluded from the list.