A zombie computer, or zombie, is a computer attached to the Internet that has been compromised by a hacker, computer virus, or trojan horse. Generally, a compromised machine is only one of many in a network of remotely controlled computers used to perform malicious tasks. Most owners of zombie computers are unaware that their systems are being used in this way, but the damage caused by such systems can be devastating. Approximately what percent of the world's spam is sent from zombie computers?
Back in the day
In this case, the US Supreme Court upheld a Louisiana statute mandating racially segregated railroad cars, ruling that the equal protection clause of the 14th Amendment dealt with political and not social equality. This provided constitutional sanction for the adoption of the Jim Crow laws. Justice Henry Billings Brown wrote the majority opinion, stating that "separate but equal" laws did not imply one race's inferiority to another. Why was Homer Plessy chosen to serve as the case's plaintiff?
Born on a day like today
Isabella d'Este was one of the leading women of the Italian Renaissance and a major cultural and political figure. Known as "The First Lady of the Renaissance," she was well-educated in her youth and was a keen musician and collector of Roman sculpture. Under her auspices, the court of Mantua became one of the most cultured in Europe, drawing many important artists, writers, and thinkers. The portrait of her that hangs at the Louvre in Paris was painted by what famous artist and scientist?