Computer experts know that computers connected to the Internet can be identified by an Internet protocol IP number, also known as an IP address.
An IP address is similar to a telephone number in that the number can be traced through subpoena to a particular location or vicinity. He used a monetary brokerage service that is designed to protect the anonymity of buyers and sellers. Investigators leaned that "ugofif" had used Phoenix public library computers on hundreds of occasions. Because the library does not log nor retain basic user information, the investigation would have stalled except for one unusual IP address that appeared in the long listings of hundreds of identical library addresses.
The unusual IP address did not match the IP addresses associated with the library. Investigators researched the unusual IP address. They found that it was associated with a computer e- mail kiosk at a convenience store in Phoenix.
The store was not far from the main downtown public library. The convenience store has a small podium-like stand with a computer attached that permits users to insert money and then log-in and check email.
Fortunately for investigators, the store also maintains a video tape recording system that preserves images of customers. Using the images, investigators then began covert surveillance at the downtown branch of the library, looking for the person in the picture. The library has dozens of computers located on three different floors of the building.
On December 30, , a person resembling the man depicted on the store video was observed using a library computer at the downtown library. Covert surveillance was conducted for two hours as the man moved about and used seven different library computers. Initial surveillance could not confirm that the person was in fact "ugofif".
The library did not require users to provide any proof of identity in order to use the computers and investigators later learned that the computers have software set to eliminate evidence shortly after a patron departs. When the man left the library, investigators followed afoot. A few blocks from the library he was detained temporarily under a pretext and he presented identification with the name Taurean Allmon. Allmon said that he was transient and living at the nearby homeless shelter.
A search warrant was prepared for the purpose of seizing the seven library computers that had been used by Allmon. On January 5, , the search warrant was ready.
Detectives planned to wait for Allmon to use a computer at the library, detain him, and then seize the computers listed in the warrant. Detectives watched for two days but Allmon did not return to the library. Finally, on January 6, the warrant was served and ten computers were seized. Undercover on-line investigators continued working the case and learned that Allmon had traveled to California for a temporary laborer job.
While in California, Allmon had used various library and motel computers while continuing to traffic child pornography. Investigators learned that Allmon said that he would return to Phoenix sometime in February. Allmon had removable media storage devices in his possession that were seized by detectives. He made admissions to crimes amounting to the possession of child pornography, and possession with intent to sell child pornography. Computer forensic analysis of the computer storage media seized from Allmon revealed numerous disturbing images of child pornography involving children as young as five years old.
The computer forensic analysis of 17 computers seized from the library proved unproductive because the computers contain special software that quickly eliminates or over-writes evidence that might have helped investigators.
On March 9, Allmon pled guilty to one felony count of sexual exploitation of a minor and one felony count of attempted sexual exploitation of a minor. Allmon will serve ten years in prison followed by lifetime probation and registration as a sex offender.
Arizona Department of Corrections inmate number Deferred jail term for an Arizona Internet sexual predator Phoenix, Arizona - September 11, Offender: Anthony Russell Allen, a.
The arrest occurred in Phoenix. Allen came to the attention of law enforcement when he used the Internet with the intention of meeting a minor for sex. During Internet chat conversations, while using the screen name: Have u ever seen a guy naked? The armored car driver arrived in his personal vehicle, a sedan and was taken into custody. He confessed to the crime. Allen served served 3 days in jail and pled guilty to one count of luring a minor for sexual exploitation.
On September 11, he was sentenced by Judge Bethany G. Hicks of Maricopa County Superior Court. This is a deferred jail term. This means that the offender will only go to jail if he violates his probation terms. The attorney said that an alert Information Technology IT Specialist employed by the organization had observed unusual Internet traffic originating from an employee's computer. A computer logged in under an employee's name was trafficking sexually explicit chat conversations, apparently with minors, and the computer user was attempting to arrange meetings for sex with the minors.
Using the screen name "tripledigitheat" the computer user was discussing sex acts already completed with one unidentified minor. The IT specialist tracked the origin of the Internet traffic to someone logged it under the employee user name, "sthenderson".
Investigators were informed that "sthenderson" was the name assigned to an account registered to Dr. Steven Henderson, a neuropsychologist employed by the healthcare organization. An intense week-long proactive investigation ensued. Henderson was placed under covert surveillance. On November 11, , "tripledigitheat", engaged in sexually explicit Internet chat conversation with the intent to meet a minor for sex. His chats included the following excerpted statements: He was met instead by detectives and taken into custody.
Immediately aware of his predicament, but selfishly oblivious to the suffering of others Henderson lamented, "No, no, no, don't do this! You don't understand, you're ending my life! His workplace computer was seized pursuant to a search warrant. Investigators identified the minor victim name withheld who provided statements incriminating Henderson.
Physical trace evidence was recovered from the victim's home. The evidence matched Henderson and corroborated the victim's story. The Maricopa County Attorney's Office handled plea negotiations. Klein of the Maricopa County Superior Court to one felony count of sexual conduct with a minor and dangerous crime against children in the first degree. He also plead guilty to three counts of felony attempted sexual conduct with a minor and dangerous crimes against children in the second degree.
On August 25, , Dr. Steven William Henderson, age 41, was sentenced to 17 years prison, lifetime probation, and sex offender registration. Arizona State Prisoner number