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# es_event_cs_invalidated_t

A type for an event that indicates the invalidation of a process’ code signing status.

```
struct es_event_cs_invalidated_t
```

## Overview

Endpoint Security generates this event as a result of removing the `CS_VALID` bit from a process’s CS flags. This occurs in the following situations:

- An invalid page for a process with an otherwise-valid code signature pages in.
- A call to `csops(CS_OPS_MARKINVALID)` explicitly invalidates the process.

Endpoint Security doesn’t generate this event if `CS_HARD` is set, since `CS_HARD` by design prevents the process from becoming invalid.

## Topics

### Inspecting Event Properties

[`reserved`](/documentation/EndpointSecurity/es_event_cs_invalidated_t/reserved)

An unused field reserved for future use.


---

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