Amstel Securities

Amstel Securities was compromised in a ransomware attack attributed to THEGENTLEMEN in May 2026. The organization, operating in the Financial Services sector in Netherlands, was added to the group's data leak site as part of an extortion campaign.

THEGENTLEMEN operates as a financially motivated ransomware-as-a-service (RaaS) operation, exfiltrating sensitive data and threatening public disclosure to pressure victims into paying ransom demands.

amstelsecurities.com zoominfo.com/c/amstel-securities-llp/353641962 Amstel Securities is a premier independent brokerage firm founded in 1989, connecting Asian and global markets with 35+ years of expertise in fixed income, equities, and derivatives. As a trusted agency and matched-principal broker, they specialize in Southeast Asian domestic currency bonds, high-yield credit, and G7 markets, serving institutional clients with unbiased execution and deep liquidity. Backed by strategic partnerships with BNY Mellon's Pershing for clearing and custody, they deliver secure, efficient solutions for wealth managers, family offices, and accredited investors worldwide