Add “noopener” in the youtube link?

You can do so using the LYTE API, specifically the lyte_match_postparse_template filter Alex. Are you familiar with how to use filters?

hmmm not really ??

ok, try adding this (the easiest & safest solution is using the code snippets plugin);

add_filter( 'lyte_match_postparse_template', function( $lytetemplate ) {
    return str_replace( ' target="_blank">', ' target="_blank" rel="noopener">', $lytetemplate );
} );

Awesome, that worked great!
Thanks a lot for the fast support! ??

Alex