The Internet is not a safe place.
If you are surfing the Internet without proper protection softwares on your PC, you risk losing all your files/images/videos and also, everything you type/read including passwords are easily stolen by cyber criminals.
Antivirus softwares are programs that help protect your computer against most viruses, worms, Trojan horses, and other unwanted invaders that can make your computer “sick.”
Viruses, worms, and the like often perform malicious acts, such as deleting files, accessing personal data, or using your computer to attack other computers.
Some of the recommend FREE Anti-Virus programs are:
Avast Free Antivirus 2016: https://www.avast.com/faq.php?article=AVKB3
AVG AntiVirus Free (2016): http://www.avg.com/ww-en/free-antivirus-protection
Panda Free Antivirus (2016): http://www.pandasecurity.com/usa/homeusers/solutions/free-antivirus/
Check Point ZoneAlarm Free Antivirus + Firewall 2016: http://download.zonealarm.com/bin/free/1001_za/zaSetupWeb_141_011_000.exe
Your PC also requires a Firewall.
Without a firewall, your computer is operating with an “open door” policy. Bank account information, passwords, credit card numbers, virtually any sensitive information on your computer becomes available to hackers. Hackers can get in, take what they want, and even leave one of their own “back doors” in place for ongoing access to your computer whenever they like.
Some of the recommend FREE Firewall programs are:
Comodo Anti-virus plus Firewall: https://www.comodo.com/home/internet-security/firewall.php (how to install- https://help.comodo.com/topic-72-1-284-3004-.html)
ZoneAlarm Firewall: http://www.zonealarm.com/software/free-firewall/
Its recommended to go for Paid softwares that includes Anti-Virus plus Firewall:
Norton Internet Security: http://www.lazada.com.my/symantec-norton-internet-security-1-year-1-pc-1153032.html
Kaspersky Internet Security: http://www.lazada.com.my/kaspersky-2016-internet-security-1-user-4044100.html
Why pay for Anti-virus/Internet Security software suites: http://www.pcworld.com/article/210589/free_versus_fee_free_and_paid_antivirus_programs_compared.html
