Okay. Everyone knows that computers are prone to viruses. But there are more bad guys than just viruses, there are also worms, spywares or phishing! The solution to all these is very simple. GET A MACBOOK! Alright. There's more to that of cause, as even if you use a macbook, you still have to practice safe behavior while using the computer.
1. Anti-virus Software?
These software supposedly helps to protect you against various threats like viruses, spywares, trojans... As long as it's updated to the latest virus definitions. A firewall is also important. Most of the time, they really work!
2) Do not download unknown files casually
If it's from an unknown source, try not to open or download it into your computer. You never know what it contains inside!
3) Always make sure it's the correct website before you submit your username and password or credit card number. Best if it is made through a secure website that has the "s" behind "http" on the url - https://
Even Barack Obama's team has experienced attack by the hackers. So these threats are real and can happen to you as well. Take a look at this video on Obama speaking on Cybersecurity.