How Infostealer Logs Became the Fuel Behind Massive Cloud Data Breaches

Infostealer logs—records of harvested credentials, session cookies, and SSO tokens—have become the dominant initial-access commodity enabling large-scale cloud breaches. The report details the end-to-end kill chain from infection (social-engineering lures, trojanized installers, fake updates) to collection, Telegram-based exfiltration, bulk marketplace sales, and brokerage by initial-access brokers who resell validated access to ransomware affiliates; it highlights major stealer families (Lumma, RedLine, Vidar, CastleLoader), the Snowflake breach case study, high-risk sectors, detection behaviors, recommended identity-centric mitigations (phishing-resistant MFA, CAE, managed devices), and short-lived IOCs.