The SunCloudNew Data Quietly Surfaced: 340,426 Records Exposed

HEROIC analysts noticed a stealer log named SunCloudNew 1766 quietly appear on a Telegram channel on June 30, 2026, just days ago. There was no big announcement, no dramatic post, just a file with 340,426 records added to the channel like dozens of others before it. Each record pairs an email address with a plaintext password and the exact login URL the credentials were stolen from, and because the upload was so recent, most of those logins have likely not been changed yet.

Why the Quiet Arrival of SunCloudNew Should Worry You

Big, headline making breaches get attention and prompt people to change their passwords quickly. Quiet leaks like SunCloudNew do the opposite: they slip past unnoticed, which gives attackers more time to work through the data before victims ever find out. A file this size going unnoticed is arguably more dangerous then a smaller, more publicized breach, simply because fewer people know to check.

What Was Exposed in the 340,426 Record SunCloudNew File

• Email addresses tied to 340,426 individual accounts
• Plaintext passwords stored with no encryption at all
• The specific login URLs each credential pair was captured from

Why a Quiet Leak Like This Still Causes Real Damage

Just because a leak does not make headlines does not mean it wont end up fueling credential stuffing attacks against banks, email accounts, and online shopping sites. Attackers do not need publicity, they need working credentials, and a plaintext password paired with its exact login page gives them exactly that. For the 340,426 people in this file, the risk of account takeover, financial fraud, or identity theft is just as real as it would be in a leak that made the news.

How a Stealer Log Like SunCloudNew Stays Under the Radar

Infostealer malware infects a device quietly, harvesting saved browser passwords and login data without the victim ever noticing anything unusual. The resulting file is often uploaded to Telegram channels in a steady, unremarkable stream, one of many similar drops that come and go without drawing much attention outside of security researchers actively monitoring those channels. That quiet, routine nature is exactly what lets leaks like SunCloudNew spread and get used before most people even know they exist.

Check If You Are Affected by the SunCloudNew Leak

Because this leak arrived quietly, there is a good chance you would never hear about it otherwise. HEROIC's free breach scanner checks your email against a database of more than 400 billion leaked records, including quiet drops like SunCloudNew, so you can find out what has been exposed and secure your accounts before anyone takes advantage of it.