300-k - Hq-mail-access .txt
The "300-K" suggests the file contains approximately 300,000 unique records .
If you are concerned that your data may be included in such a list: 300-K HQ-Mail-Access .txt
Files like these are often distributed or sold on dark web forums and Telegram channels. The "300-K" suggests the file contains approximately 300,000
Combolists and ULP Files on the Dark Web: A Secondary ... - Group-IB 300-K HQ-Mail-Access .txt
Attackers use these lists to gain unauthorized access to personal or corporate email accounts.
The primary danger is that a password leaked from one service might work on another (e.g., banking or social media) if the user reuses credentials.