Private companies are increasingly providing a fee-based electronic messaging system similar to email for prisoners to communicate — and reaping the profits.

Rick Smith, head of Securus Technologies, says his company is helping solve crimes while providing humane access to prisoners. Angry critics claim otherwise.

Securus Technologies, a prison technology company, blames a rogue employee -- not outsiders -- for a data breach that exposed 70 million inmate phone calls.

The business of providing phone calls to inmates and their families is lucrative, and controversial. But who owns the basic technology?

Securus, a billion-dollar tech firm, will no longer force jails to replace in-person family visits with its video visitation system.

At jails across the country, sheriffs are threatening to literally rip phones out of the walls. Here's why.

They can be huge moneymakers for cash-strapped county jails. But one Tennessee sheriff is in the hot seat for a backroom deal.

A New York startup wants to deliver tablets to inmates — not so they can watch Netflix, but so they can earn a GED.

An investigation into the business practices of Securus, a for-profit tech company that charges prisoner family members as much as $20 for a 20-minute video call — and requires jails to eliminate...