T-Mobile API Scraping 2023: 37M Accounts, One Credential
A single compromised API credential let an actor scrape ~37 million T-Mobile accounts over six weeks. Machine-identity governance lessons from a repeat offender.
A single compromised API credential let an actor scrape ~37 million T-Mobile accounts over six weeks. Machine-identity governance lessons from a repeat offender.
CVE-2023-4966 let attackers read valid session tokens out of NetScaler memory and inherit authenticated sessions wholesale — MFA already passed. CISA’s Emergency Directive 23-08 forced hunts and rebuilds as LockBit monetized the access.
In September 2023 two extortion crews — Rhysida and the short-lived Ransomed.vc — both posted Sony data claims, complete with a Bitcoin auction and a leaked code-signing certificate. Sony investigated; the claimed 6TB scale never verified.
Ransomware forced the Guardian’s newsroom off its networks for weeks in late 2022 — yet print and web kept publishing. Editorial continuity lessons.
A cloned intranet page harvested an employee’s password and MFA code, opening hours of internal access. Phishing-resistant MFA and self-report lessons.
LockBit encrypted Royal Mail’s international sorting operations in January 2023 and demanded $80M. Royal Mail paid nothing and kept the letters moving.
Rackspace’s December 2022 ransomware incident took Hosted Exchange down for weeks, ended the product’s life, and cost $12M+. Legacy platform lessons.
Operation Cookie Monster seized the market selling browser sessions, cookies, and saved credentials for ~2M identities, with 119 arrests across 17+ countries. Session-security lessons.
LastPass confirmed attackers copied encrypted vault backups after pivoting through a DevOps engineer’s endpoint. KDF legacy and unencrypted metadata set the real risk.
Change Healthcare lost the claims pipeline of a nation in hours. This minute-by-minute playbook covers hour zero containment, the command structure by hour four, backup verification, pay/no-pay, regulatory clocks — and the non-technical decisions that decide survival.
A defunct test tenant, a legacy password without MFA, and a residential-proxy password spray gave Russia’s Midnight Blizzard a foothold inside Microsoft’s own corporate estate in January 2024 — culminating in stolen executive email and a downstream supplier breach wave. This account explains the password-spray tradecraft, how the actors abused OAuth apps to mine mailboxes, why the failure drew a czar-memo mea culpa, and the SEC disclosure mechanics that made the saga public.
Reused passwords took over 14,000 23andMe accounts, then the DNA Relatives feature amplified the access into profile data for 6.9 million genetically-linked users. The October 2023 breach rewrote breach math: your exposure now includes every relative’s password hygiene.