If You Reuse Passwords, the Stream-jp.com Leak Should Worry You

In May 2026, HEROIC analysts identified a combolist file uploaded by a Telegram user containing 580 records tied to stream-jp.com. The file included email addresses, plaintext passwords, and associated URLs, giving anyone who downloads it a working set of login credentials.

Why This Is Dangerous

Because the passwords in this leak are stored in plaintext, there is no encryption or hashing standing between an attacker and a working login. Anyone who grabs a copy of this file can start testing these email and password combinations against other sites immediately, without needing any special skills or tools to crack the passwords first.

What Was Exposed

• Email addresses
• Plaintext passwords
• Associated URLs

Why This Matters

If you reuse the same password across multiple accounts, a leak like this one is exactly the kind of exposure that leads to credential stuffing attacks. Attackers take email and password pairs from combolists and automatically test them against email providers, banking sites, and social media platforms, hoping the same login works elsewhere. When it does, the result can be full account takeover, identity theft, or financial fraud, often with no warning until the damage is already done.

How Combolist Leaks Work

A combolist is a text file that pairs usernames or email addresses with passwords, typically gathered from past breaches, malware infections, or manual scraping and then packaged for sharing or resale. Telegram has become a common place to post these files because it allows uploaders to reach a wide audience quickly with little accountability. Once a combolist circulates, it is frequently copied and reposted, so the exposure from this single upload can keep resurfacing well after the original post.

Check If You Are Affected

If you have ever used an account tied to stream-jp.com, or if you tend to reuse passwords across sites, it is worth checking your exposure now. HEROIC's free breach scanner searches a database of more than 400 billion leaked records, giving you an instant answer so you can update any reused passwords before someone else tries them first.