: The archive contained login credentials (emails and passwords) harvested from various sources. While it was initially feared to be a single breach of a major government portal or service, analysis revealed it was a "combo list" —a collection of data aggregated from many different, smaller breaches over several years.
The leak gained significant attention in early 2023 when the file was shared on several underground hacking forums and Telegram channels. Here is how it unfolded: 3.5mlnPL.7z
If you believe your information was in this file, you can check reputable breach notification sites like , which frequently indexes these major "combo" archives. : The archive contained login credentials (emails and
: Cyber-security researchers and Polish authorities identified a 7-zip archive named 3.5mlnPL.7z circulating on the dark web. 3.5mlnPL.7z