We only know about this because they were required to report it to the SEC as a publicly traded company. I've had zero communication from them as a customer, and their website and app just says:

We’re experiencing technical issues with our internal support systems.

Our customers’ internet service is up and running and not affected by this issue. In the meantime, please call for assistance.

You mostly can't get through when you call, and when you do finally get a person, they can't access your account or any of their internal systems to do anything for you. This is a CYA statement that they absolutely cannot back up.

From the article linked:

Frontier Communications detected the third party Sunday, April 14. The company’s report states the third party “gained unauthorized access” to some of its information technology environment.

Frontier says in the filing that once they detected the threat, they put their cyber incident response protocols into place in an effort to contain the incident. They say part of this process includes shutting down some of the company’s systems. The filing says that the shutdown resulted in an “operational disruption.”

The company says it launched an investigation into the incident and determined the third party was allegedly a cybercrime group. Frontier’s filing also states that the third party “gained access to, among other information, personally identifiable information.

According to the filing, Frontier says it believes that by Monday, they had contained the incident. They also say they then restored their core information technology environment. As of the filing Monday, Frontier said they were “in the process” of restoring their normal business operations.

...

Frontier said in the filing they did not believe the incident will materially impact their financial condition or the results of their operations.

Lmao

I'm not the only customer who lost service around the time of the attack — This reddit thread is full of people in the same situation, all over the country. It hasn't come back, and as I mentioned at the top, they can't do anything for us.

There are a lot of people like me who have no good alternatives (there are literally no other DSL or fiber providers for my address, there are too many trees between me and the WISP towers, satellite latency is a problem, and the cell signal here sucks), but there are a lot of people in that thread talking about switching.