Who attacked Monty Holding Group?

pysa, a ransomware group, claimed the attack on Monty Holding Group on September 9, 2021. This cyberattack was formally announced and is tracked with 0 community validation(s).

What is the status of the attack on Monty Holding Group?

Current status: Announced. Data is not yet public. The attack was discovered on September 9, 2021 and 0 validation(s) have been recorded by the community.

In which country is Monty Holding Group located?

Monty Holding Group is an organization based in NL operating in the Investment Management sector.

What is the timeline of the attack on Monty Holding Group?

The attack follows a documented timeline of 3 events. First event: Découverte initiale (September 9, 2021). Latest event: Enrichissement AI (November 30, 2025). Each stage is tracked and validated by the DataInTheDark community.