This is the case if your computer uses Windows 10, which comes with an excellent built-in antivirus and anti-malware tool called Windows Defender. However, most computers are also sold with antivirus systems already installed. These days there are a number of seriously powerful antivirus software you can install to protect your computer, such as McAfee and Norton. Luckily, as malware has become more sophisticated, so have anti-malware and antivirus systems. With the arms race between malware and anti-malware systems accelerating every day, it has never been more critical to protect your computer from attacks. More recently, a malware attack known as WannaCry spread rapidly through a corrupted Microsoft Windows program, costing billions of dollars in damages. Since then, the risk of malware attacks has only increased as hacker groups and malicious programmers have become more sophisticated. This notorious malware attack occurred nearly 22 years ago (basically a century in terms of computer technology development).

Known as the Love Bug or Love Letter for You attack, this infamous computer worm infected more than ten million personal computers in 2000 and cost an estimated $15 billion in damages worldwide. It started with three little words in an email subject line: I Love You.

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