One Stealer Log. 2,183 Validated Aliyun.com Email Logins Exposed

HEROIC analysts flagged a file circulating on Telegram labeled "MAIL ACCES 8K ALIYUN.COM VALID 100," posted on 7 October 2025. The listing's own name claims roughly 8,000 checked logins, but HEROIC's verification process confirmed 2,183 genuine records tied to Aliyun.com mailboxes, each one paired with an email address, a plaintext password, and the login URL used to access it. The "VALID" tag in the file name is not a bluff. Sellers of these lists typically run each login against the real service first, so what gets shared is a pre-checked batch of working email accounts.

Why This Is Dangerous

A pre-validated login list removes the guesswork for an attacker. Instead of testing thousands of random combinations, they open a file that has already confirmed which usernames and passwords work. With a valid Aliyun.com mailbox, an attacker can read private correspondence, reset passwords on any other account linked to that inbox, and pivot into cloud services, business tools, or financial accounts that use that email for verification.

What Was Exposed in the Aliyun.com List

• Email addresses tied to Aliyun.com mail accounts
• Plaintext passwords for each account
• The specific login URL used to access each mailbox

Why This Matters

Email is the master key to most of a person's digital life. Whoever holds a working inbox login can trigger password resets across banking, shopping, and social media accounts tied to that address. Because this list was already validated before being shared, the accounts inside it are not theoretical targets, they are confirmed working logins ready for credential stuffing, business email compromise, or straight-up account takeover.

How Validated Mail Access Lists Like This Get Built

Lists like this one usually start life as a raw stealer log, credentials harvested from malware-infected devices or pulled from earlier breaches. Before selling or sharing the file, the person behind it runs an automated checker against the target mail provider, logging into each account to confirm the password still works and discarding anything dead. What is left is a smaller, more valuable list labeled "valid," exactly what happened here, where 2,183 out of a claimed 8,000 entries were confirmed active.

Check If You Are Affected

If you use an Aliyun.com email address or have ever reused that password elsewhere, it is worth checking now rather than waiting to find out the hard way. HEROIC's free breach scanner searches your email against more than 400 billion leaked and validated records, including lists exactly like this one, so you can find out if you are exposed and change your passwords before someone else uses them first.