Wp.com: Backups on WordPress: advanced options, partial restores
WordPress backups: advanced options, partial restores. is a long article of about 25 minutes of reading time.
security
UBAC 306: WPO and security with WordPress, with Carlos Longarela
I recently had the honor of boarding A Ticket to Chattanooga with Ana Cirujano and Pablo Moratinos who have driven this locomotive beautifully.
WP.com: Complete WordPress security from DNS to the browser
My article Complete WordPress Security from DNS to Browser has been published in the WordPress.com Spanish Blog.