### Overview
Following the activation of persistence mechanisms, there is now evidence of **lateral movement** across Yahoo accounts and systems. Attackers are leveraging their foothold to access additional resources.

### Tactics Observed
- **Credential Reuse:** Using harvested credentials to access related accounts and services.
- **Network Traversal:** Exploiting network vulnerabilities to move between systems within Yahoo's infrastructure.

### Analysis
This phase indicates a concerted effort to maximize data access and exfiltration potential, likely with the aim of conducting a massive data breach.

### Next Steps
Prepare for possible data exfiltration efforts as attackers reach their objectives.