Cryptanalysis & Racketeering

Cryptologist in the 1970s

The Cryptanalysis and Racketeering Records Unit (CRRU) supports law enforcement and the intelligence community through the analysis of cryptic communications, records, and symbols.

The Team 

Cryptanalysts and cryptanalyst forensic examiners.

The Work

In addition to the operational tasks listed below, unit members also testify in legal proceedings.


Decrypt manual codes and ciphers found in letters, notes, diaries, ledgers, and other types of written or electronic communications. Common users of codes include foreign and domestic terrorists, organized crime, gangs, prison inmates, and violent criminals.

Records Examinations

Examine and decode records from illicit businesses, such as drug trafficking, prostitution, illegal gambling, and human trafficking. Examinations may reveal the type of operation, dates of activity, gross profits, number and roles of participants, and accounting methods.

Symbol Examinations

Examine cryptic symbols from graffiti, tattoos, or other sources to provide intelligence and investigative leads to law enforcement.