In May 2000, a computer virus, also known as the Love Letter, swept through the nation. A news report later in the year describes the especially potent and damaging malware that made its way into a number of computer systems through e-mails with "I Love You" in the subject line.

FACT CHECK: We strive for accuracy and fairness. But if you see something that doesn't look right, click here to contact us! HISTORY reviews and updates its content regularly to ensure it is complete and accurate.

RELATED CONTENT

Follow these presidential lessons in love to win a second term with your Valentine.

Learn about the landmark Supreme Court decision in Loving v. Virginia, which legalized interracial marriage in the United States.

Did you know that the first-ever tanks, chemical weapons and blood banks were introduced during World War I? Get all the facts behind the conflict known as the "war to end all wars."

How the Census Led to Modern Computing

When it came to words of affection, these presidents didn't need the aid of speechwriters.

Elizabeth I ruled England for 44 busy years. Learn more about the Queen who refused to marry in this video.