No. It turns out that breach was faked, effectively. It was done by manipulating Brian Krebs. He's since issued a mea culpa (although a somewhat weak one): https://krebsonsecurity.com/2022/08/final-thoughts-on-ubiqui...

That was an insider trying to extort the company by pretending to be an outside hacker. He then posed as a whistleblower to try and throw investigators off the trail.