The article implies this is the first time they've notified customers, so they've either been unaware (seems unlikely since the FBI had a mole in HTP, who have

The article implies this is the first time they've notified customers, so they've either been unaware (seems unlikely since the FBI had a mole in HTP, who have claimed responsibility) or just not disclosing it? Is that true? I can understand why people are annoyed at Linode and everything, but this seems ridiculous if it's the first time.