SunCloudNew Stealer Log Data Breach: 64,890 Records Leaked

In November 2025, HEROIC analysts tracked a stealer log file named SunCloudNew posted to a Telegram channel. The file contained 64,890 individual records, each pairing an email address with a plaintext password and the exact login URL it belongs to, a combination that gives criminals everything they need to break into an account in seconds.

Why This Is Dangerous: Ready Made Login Kits

Unlike a typical password dump, this leak was not hashed, salted, or encrypted in any way. Every password sits in plain text next to the site it unlocks. An attacker does not need special tools or technical skill to use this data, they simply copy, paste, and log in. That lowers the bar for cybercrime dramatically, letting even low skilled criminals cause real damage.

What Was Exposed

• Email Addresses
• Plaintext Passwords
• Login URLs (the site each password matches)

Why This Matters: Credential Stuffing and Account Takeover

Because so many people reuse passwords, one exposed login often opens the door to several accounts belonging to the same person. Automated bots take lists like this one and quickly test each email and password combo across banking, email, and shopping sites nationwide. This process, known as credential stuffing, is a leading cause of account takeover, identity theft, and financial fraud, and it can definately happen within minutes of a leak going public.

How Stealer Log Breaches Work

A stealer log is not a hack of a single company. Instead, it comes from infostealer malware that infects individual computers, often hidden inside pirated software, fake browser updates, or malicious attachments. Once active, it quietly harvests every saved password, autofill entry, and website address stored in the victim's browser.

That harvested data is packaged into a "log" file and either sold on criminal marketplaces or, like the SunCloudNew file, uploaded for free so other attackers can grab it and begin testing accounts almost imediately.

Check If You Are Affected

With 64,890 records now circulating, the odds that your email address is included are worth taking seriously. HEROIC's free breach scanner checks your email against a database of over 400 billion leaked records and shows you instantly whether you were caught up in this breach or any other. Scan now and change any password flagged as exposed.