I didn't install any anti-malware or virus software, I know my computer very well, and I don't browse any unsafe websites. however, some of my friends used my computer. I found that I suffered the attack from malware.

Due to didn't use any auti-malware before, so I don't know which one is the best free anti-malware for Windows 8, especially Windows 8 128 bit.

Hi guys,

Security 360 is your best choice in terms of remove anti-malware.

Security 360 PRO is an advanced malware & spyware removal utility that detects, removes the deepest infections, and protects your PC from various of potential spyware, adware, trojans, keyloggers, bots, worms, and hijackers. With the unique "Dual-Core" engine and the heuristic malware detection, Security 360 PRO detects the most complex and deepest spyware and malware in a very fast and efficient way.