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# What's new in Sigma

> Sigma release notes for Aug 11, 2023: Column-Level Security, bulk actions for admins, and more.

## Admin

### Column-Level Security (Beta)

Column-Level Security provides granular control over data access allowing you the flexibility to restrict or grant access to column-level data. This ensures that the security of sensitive or confidential information is only accessible to authorized users.  Column-Level Security (CLS) is managed through team membership and user attributes.

Column-Level Security provides the following benefits:

* Secures columns that contain sensitive information.
* Data sharing and collaboration: Organizations can share specific columns with external parties or partners without exposing the entire dataset.
* Data Confidentiality in Multi-Tenant Environments: In multi-tenant systems or cloud-based environments, where multiple clients or orgs share the same infrastructure, CLS ensures that each tenant's data remains isolated and protected from other tenants.
* Data Masking and Anonymization: Combine CLS with data masking and anonymization techniques to protect sensitive data, while allowing certain authorized users to work with pseudo or obfuscated values.

For more information, see [Column-level security](https://help.sigmacomputing.com/docs/column-level-security).

### Bulk actions for admins

In order to improve the admin experience and provide admin functionality at scale, numerous actions can now be performed in bulk.

**User Management**

* Bulk password reset
* Bulk invite resend
* Bulk invite delete
* Bulk reactivate disabled users
* Team Management

**Bulk add team members**

* Bulk team member transfer
* Bulk remove members from team
* Bulk team delete

**User Attributes and Exports**

* Bulk delete of User Attributes
* Bulk delete of Scheduled Exports

### New audit log connection schema and dimension tables

The **Sigma Audit Logs** connection now features a **SIGMA_SHARED** schema with dimension tables containing information about your Sigma organization's resources, objects, assets, etc.

Dimension tables:

|                             |                                                              |
| :-------------------------- | :----------------------------------------------------------- |
| **CONNECTIONS**             | Connection attributes                                        |
| **DOCUMENTS**               | Document attributes (for folders, workbooks, datasets, etc.) |
| **SCHEDULED_NOTIFICATIONS** | Notification attributes for scheduled exports                |
| **SENDGRID_LOGS**           | Email attributes for exports                                 |
| **TEAMS**                   | Organization                                                 |
| **USERS**                   | Organization user attributes                                 |

The dimension tables can be joined with the AUDIT_LOGS table to add context to audit log events. For example, join AUDIT_LOGS with the DOCUMENTS table to add document attributes (e.g., creation date, document path, and archive status) to event entries related to user interactions with workbooks, datasets, etc.

## Functions

### ArraySlice function

The **ArraySlice** function returns a portion of an array, defined by the starting index and length. See [ArraySlice](https://help.sigmacomputing.com/docs/arrayslice).

## Bug fixes

* The footer is now hidden for embedded workbooks, including tagged versions, if you set the show_footer parameter to false.