### Overview
Following the detection of suspicious access to the Exchange Server, a detailed analysis was conducted. Initial indicators suggest exploitation of known vulnerabilities in Exchange Server versions recently patched by Microsoft.

### Technical Details
- **CVE**: Possible exploitation of CVE-2021-26855, known as ProxyLogon.
- **Attack Vector**: Unauthorized access was achieved through a compromised email account.

### Recommendations
- Immediate application of the latest security patches.
- Review and harden email account credentials.
- Monitor network for further unauthorized access attempts.

### Next Steps
Prepare for potential execution of malicious scripts as attackers often deploy payloads shortly after initial access.