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# 6.6.0

In this version, we have added an IAD pre-filter to the liveness check engine. The purpose of this pre-filter is to improve liveness detection in the presence of IAD attacks. In addition, the responses from the service endpoints now include a new property `sdkDuration`, which indicates the time spent by the SDK in processing the request. Finally, support has been extended for `ValidTimeStamp` in `SelphIDFacialExtractionResult` and `SelphIDDocumentResult`, and the authentication endpoints of the Rest-API service have been improved, adding the extraction results of both the image `query` and the image `target`.

### Added

* IAD pre-filtering (Injection Attack Detection) for the liveness check engine. Detects bands on the edges (Bands to edges) and nearest-neighbor scaling (Scaled nearest neighbor).
* Some improvements to the base64 library.
* Added `SelphIDFacialExtractionResult::Set/GetValidTimeStamp()`.
* Added `SelphIDDocumentResult::Set/GetValidTimeStamp()`.
* New property `sdkDuration` in the responses from the service endpoints.
* New property `validTimeStamp` in the responses from the service endpoints.
* `longDetail` in `options` of the service endpoints. If it is `true`, the result of the endpoint will include additional information. If omitted, the default value will be `false`.
* If `options:longDetail==true`, the following will be added `extractionQuery` and `extractionTarget` (both of type `FacialExtractionResult`) to `FacialAuthenticationResult` in the authentication endpoints of the service.
  * `/api/v1/selphid/authenticate-facial/images`.
  * `/api/v1/selphid/authenticate-facial/image/template`.
  * `/api/v1/selphid/authenticate-facial/templates`.