WordPress at a glance
filter is not described

send_auth_cookies filter-hook . WP 4.7.4

Allows preventing auth cookies from actually being sent to the client.

Usage

add_filter( 'send_auth_cookies', 'filter_function_name_1663' );
function filter_function_name_1663( $send ){
	// filter...

	return $send;
}
$send(true/false)
Whether to send auth cookies to the client.

Where the hook is called

wp_set_auth_cookie()
wp_clear_auth_cookie()
wp-includes/pluggable.php 916
if ( ! apply_filters( 'send_auth_cookies', true ) ) {
wp-includes/pluggable.php 943
if ( ! apply_filters( 'send_auth_cookies', true ) ) {

Where the hook is used (in WP core)

Does not used.