Comcast is giving some of its customers a way to get back unlimited data for their home broadband connection without having to spend an extra $50 for an unlimited data add-on.

The cable operator is offering customers in parts of its Central Division its xFi Advanced Gateway — a combination cable modem and router — that comes bundled with unlimited data, xFi Advanced Security, and a Home Wi-Fi Assessment for an extra $15 a month. That amounts to $4 a month more than the cost of renting Comcast’s traditional xFi Gateway buys and also buys you a return ticket to unlimited internet service.

Comcast has also offered some new customers unlimited service in time-limited promotions, but this seems to be permanent, assuming Comcast offers it in your area.

The xFi Advanced Gateway with unlimited data appears to have quietly launched last fall, but so far it has not expanded to Comcast service areas outside of its Central U.S. division, which includes (Heartland) Michigan, Indiana, Kentucky and Arkansas, (Big South) Alabama, Arkansas, Georgia, Louisiana, Mississippi, South Carolina, Tennessee, and Virginia, plus the state of Florida and the greater Chicago area. Comcast says it has 17 states in its Central Division, but we could not find a definitive list that includes the three other states not listed here.

Interested customers will have to contact Comcast to determine if their area qualifies for this offer.

If you are a Comcast customer already paying an extra $50 a month for unlimited data, this could save you a considerable amount of money, assuming you live in a qualified area and don’t mind using their gateway.

Comcast internet customers have a new add-on option – xFi Advanced Security, an “artificial intelligence” security package designed to identify and block Wi-Fi intrusions and hack attacks on Internet of Things (IoT) equipment like lights, thermostats, smart meter apps, Wi-Fi equipped home appliances, security cameras, doorbells, voice enabled personal assistants, and garage door openers.

Comcast will sell the package for $5.99 a month (except for xFi Advantage customers, who get Advanced Security included at no additional cost), based on claims that hacker attacks on IoT devices are up 600% from 2016-2017.

xFi Advanced Security provides an added layer of protection for your entire network by preventing you from inadvertently accessing malicious sites, blocking remote access to smart devices from unknown or dangerous sources and monitoring activity in real time to detect when devices are behaving in unusual ways that could indicate a network threat.

Whenever a threat is detected, it’s automatically blocked and you are notified in xFi and given tips on how to resolve.

“As the digital world gets more complex, we wanted to make it simple and easy for our customers to protect their home networks. That’s why we developed xFi Advanced Security,” said Fraser Stirling, senior vice president of digital home, devices and AI for Comcast. “We want to give customers digital peace of mind for the devices they already own and the confidence to expand and evolve their connected homes knowing that every new camera, voice-assisted speaker or smart thermostat they add will be protected.”