person's new legal name. For example, in the 1960s, civil rights campaigner Malcolm X, originally known as Malcolm Little, changed his surname to "X" to represent his unknown African ancestral name that had been lost when his ancestors were brought to North America as slaves. He then changed his name again to Malik El-Shabazz when he converted to Islam. Likewise some Jews adopted Hebrew family names upon immigrating to Israel, dropping surnames that had been in their families for generations. The politician David Ben-Gurion, for example, was born David Grün in Poland. He adopted his Hebrew name in 1910 when he published his first article in a Zionist journal in Jerusalem. Concealing identity Pseudonymous authors may still have their various identities linked together through stylometric analysis of their writing style. The precise degree of this unmasking ability and its ultimate potential is uncertain, but the privacy risks are expected to grow with improved analytic techniques and text corpora. Authors may practice adversarial stylometry to resist such identification. Business Businesspersons of ethnic minorities in some parts of the world are sometimes advised by an employer to use a pseudonym that is common or acceptable in that area when conducting business, to overcome racial or religious bias. Criminal activity Criminals may use aliases, fictitious business names, and dummy corporations (corporate shells) to hide their identity, or to impersonate other persons or entities in order to commit fraud. Aliases and fictitious business names used for dummy corporations may become so complex that, in the words of The Washington Post, "getting to the truth requires a walk down a bizarre labyrinth" and multiple government agencies may become involved to uncover the truth. Giving a false name to a law enforcement officer is a crime in many jurisdictions; see identity fraud. Literature A pen name, or nom de plume (French for "pen name"), is a pseudonym (sometimes a particular form of the real name) adopted by an author (or on the author's behalf by their publishers). Although the term is most frequently used today with regard to identity and the Internet, the concept of pseudonymity has a long history. In ancient literature it was common to write in the name of a famous person, not for concealment or with any intention of deceit; in the New Testament, the second letter of Peter is probably such. A more modern example is all of The Federalist Papers,