So from the Article they claim:
"PayPal has since rolled back the code change responsible for this error, which potentially exposed the PII. We have not delayed this notification as a result of any law enforcement investigation."
That does little to explain the 2 month-ish delay in disclosing it. I presume they could have disclosed _at least_ that account data was leaked even if the underlying bug wasn’t yet closed?
Obviously without disclosing the nature of the bug in that case.
Just before Christmas? I doubt it
It's one of those "suspiciously specific denials"
They didn't delay the release because of law enforcement investigation, it doesn't say they didn't delay the release. There's a whole host of reasons besides "law enforcement investigation" to delay an embarrassing release, including "I don't wanna"