What happened
A data breach at the insurance unit of Brazil's state-owned bank Caixa exposed the names and tax identification numbers of 7.6 million customers. The story appeared on Hacker News' front page with 153 points.
Why it matters
The tax ID (CPF in Brazil) is sensitive information widely used for identity verification and financial transactions. Names combined with tax IDs create fertile ground for identity theft and fraud attempts.
Scope
The breach is reported to affect the entire customer base. The source does not detail how the breach occurred, when it was detected, or whether affected customers have been notified.
What to do
Affected users are advised to monitor their accounts and any official notifications closely, and to be wary of suspicious communications.
