Chainalysis Updates Breach Notice From “Some Non-Sensitive Data” to Just a .WAV File of CISO Screaming

NEW YORK—Blockchain analytics firm Chainalysis on Wednesday updated its security incident notice. In October, the notice had called the exposed customer data “non-sensitive.” The new version replaces all previous text with a 45-second .WAV file of the company’s chief information security officer screaming.

“We remain committed to transparency as the scope of this incident evolves,” read the alt text attached to the file. Company sources said it was recorded in a stairwell shortly after investigators reached the password hash table.

The update follows the firm’s original assurance that attackers using “offensive agentic techniques” had accessed only names and email addresses. Chainalysis now says that finding was accurate “for about four days.”

To restore access, customers have been asked to email a list of trusted IP addresses to the support inbox. A spokesperson said the lists would be forwarded “to whoever is reading that inbox now.”

At press time, Chainalysis had posted a second update: the same .WAV file at 2x speed, with a note promising further details as the investigation continues.