With a huge range of features included out-of-the-box and over 13 000+ additional extensions available to download
[VQMOD] SecureMyAdmin
FREE
iAdmin Security [RECOMENDED]
$20.00
Awesome Fireworks Effects
Forced SSL Everywhere OC 1.x - 3.x
$25.00
Account Registration Captcha
$19.99
Admin Login Security Lockdown Suite
[VQMOD] Admin login Captcha 1.5.X - 2.X