From warez, jocularly respelt by association with Ciudad Juárez, a Mexican city on that country's border with the United States. The border is often publicly associated with illicit trafficking.
From
Wiktionary
Juarez Sentence Examples
The second was the nomination of Dr Miguel Juarez Celman for the presidential term commencing in October 1886.
No sooner had President Juarez Celman come into power towards the close of 1886, than the respectable portion of the community began to feel alarmed at the methods practised by the new president in his conduct of public affairs.
The Paseo de la Reforma, the finest avenue of the city, is a broad boulevard extending from the Avenida Juarez south-west to Chapultepec, a distance of nearly three miles.
At intervals are circular spaces, called " glorietas," with statues (the famous bronze equestrian statue of Charles IV., and monuments to Columbus, Cuauhtemoc the last of the Aztec emperors, and Juarez).
Other notable avenues are Bucareli and Juarez, and the Avenida de la Viga, which skirts the canal of that name.