Chainalysis data breach

People affected

Not reportedno count given yet

Reported

30 October 2026News report and 6 more

Who is affected

People worldwide

What was exposed 8

• Email addresses
• Names
• Customer identity data
• User IDs
• Role information
• Access levels
• Customer account data
• Organizational role labels

How it happened

How

Hacking an external attacker used artificial intelligence (AI) agents to gain unauthorized access to its internal systems source

What changed since it was first reported

1. 1 November 2026 Confirmed breach (The Hacker News)

Sources 7

• News reportfinance.biggoChainalysis Says AI Agent Attack Leaked Customer Data, Unrelated to Binance Incident30 October 2026
  Confirmed by Chainalysis: The company said on October 31 that an external attacker used artificial intelligence (AI) agents to gain unauthorized access to its internal systems and work tools
• News reportThe Hacker NewsChainalysis Confirms Intrusion Into Internal Tools and Exposure of Customer Identity Data31 October 2026
  Confirmed by Chainalysis: Chainalysis detected an external actor
• News reportBleepingComputerChainalysis discloses data breach from "offensive agentic techniques"31 October 2026
  Confirmed by Chainalysis: Chainalysis published a security incident disclosure along with the full text of the email sent to affected customers.
• News reportCriptoNoticiasChainalysis sufre un ciberataque con IA que expuso datos de sus clientes30 October 2026

News reports are read by an AI model; every fact taken from an article was checked word for word against it, and anything it could not find was dropped. · Corrections and changes