> Source: [sk180493](https://support.checkpoint.com/results/sk/sk180493)

# sk180493 - External USB execution of malicious files is not detected by Endpoint Security Client versions earlier than E87.00

| Property | Value |
|----------|-------|
| Solution ID | sk180493 |
| Date Created | 2023-01-09 |
| Last Modified | 2023-01-11 |
| Technical Level | General |
| Products | Endpoint Security |
| Versions | Cloud, E89.X, E88.X |
| OS | Windows |

## Symptoms

- * When a USB flash drive (that is not formatted as NTFS) is inserted with malicious files, it is not detected by Endpoint Security Client.
* When USB flash drive with Mimikatz malicious file is inserted, it is not detected by Endpoint Security Client.

## Solution

This problem was fixed. The fix is included in:  

[**Endpoint Security Client E87.00**](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk180365&partition=Basic&product=Endpoint)  

Check Point recommends to always upgrade to the most recent version ([Remote Access (VPN) / Endpoint Security Clients](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doShowproductpage&productTab=downloads&product=175)).

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