Bitdefender offers downloads of its Bitdefender Total Security 2018 5-Device 1-Year for Windows, Mac, iOS, and Android for $44.99. Coupon code "RENEWAL-EXP-19.99" knocks it to $19.99. That's tied with last week's mention and the lowest price we could find for this edition by $30. New features for 2018 include webcam protection, Safe Files (prevention of unauthorized changes to important files), and behavioral detection to closely monitor active apps for suspicious activity.