The links to the source code leak for the Intel UEFI BIOS of Alder Lake CPUs was recently posted by a Twitter user named 'freak'.
The leak contained 5.97 GB of files, source code, private keys, change logs, and compilation tools, with the latest timestamp on the files being 9/30/22, likely to be the time when a hacker or insider copied the data.
However it is still not confirmed that the source code was stolen during a cyberattack or leaked by an insider.
"id": "INT2250111022",
"linkid": "intel-corporation",
"type": "Breach",
"date": "10/2022",
"severity": "100",
"impact": "5",
"explanation": "Attack threatening the organization's existence"