DDOSECRETS PUBLISHES 410 GB OF HEAP DUMPS, HACKED FROM TELEMESSAGE'S ARCHIVE SERVER

Summary from the TLDR InfoSec newsletter

Distributed Denial of Secrets published 410 GB of data that it stole from TeleMessage, an Israeli firm that makes modified versions of chat apps such as Signal and centrally archives messages. Some heap dumps include plaintext metadata, while others only include metadata, including sender and recipient information, timestamps, and group names. Due to the sensitive nature and PII in the messages, DDoSecrets only shared the data with journalists and researchers.