### Threat Actor Activities
Credential theft has facilitated extensive lateral movement across the network, targeting vaccine production systems.

### Observations
- **Credential Harvesting**: Attackers have obtained privileged credentials, allowing access to sensitive areas of the network.
- **Targeted Systems**: Focus has been on systems integral to vaccine production and distribution.

### Defensive Measures
- Implement multi-factor authentication across all systems.
- Regularly update and patch systems to reduce vulnerabilities.