Vianet
MEDIUM RISKData breach — April 2020
In April 2020, the Nepalese internet service provider Vianet suffered a data breach. The attack on the ISP led to the exposure of 177k customer records including 94k unique email addresses. Also exposed were names, phone numbers and physical addresses.
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What happened in the Vianet data breach?
In April 2020, the Nepalese internet service provider Vianet suffered a data breach. The attack on the ISP led to the exposure of 177k customer records including 94k unique email addresses. Also exposed were names, phone numbers and physical addresses.
The exposed data included 4 types of personal information. Learn more about what a data breach means for you.
Quick answer — was Vianet hacked?
Yes. Vianet was breached in April 2020. The breach exposed 94,353 records including email addresses, names, phone numbers. This breach has been independently verified. If your email was involved, your data may still be at risk today. Check if you were affected.
Why was the Vianet breach so dangerous?
The Vianet breach exposed 94,353 records — that is a large number of compromised accounts. The combination of email addresses, names, phone numbers makes this a medium-risk breach that should be addressed promptly.
Don't wait to find out — check if your email was exposed in this breach now.
What data was stolen in the Vianet breach?
Email addresses — used for phishing attacks and credential stuffing against your other accounts
Names — used to build profiles and target you with personalised scams
Phone numbers — enables SIM swapping attacks and targeted SMS phishing scams
Physical addresses — combined with other data, used for identity theft and physical fraud
Is the Vianet breach still dangerous in 2026?
Yes. Stolen data from the Vianet breach remains dangerous years after the incident. Research shows that over 65% of stolen credentials from older breaches have never been changed by the account holders. Attackers routinely compile data from multiple breaches to build complete profiles, and credentials from 2020 are still actively used in credential stuffing attacks today.
Personal information like email addresses, phone numbers, and dates of birth never expire. Even if you changed your Vianet password, the other exposed data can be combined with information from other breaches to target you. Learn more about how long stolen data stays dangerous.
Frequently asked about the Vianet breach
Approximately 94,353 user records were exposed in the Vianet breach in April 2020.
Yes. Leaked credentials are actively used in credential stuffing attacks years after a breach. If you reused your Vianet password elsewhere and haven't changed it, those accounts remain at risk today.
Enter your email in the free checker on EmailLeaked. We scan 12 billion+ breach records including the full Vianet dataset and tell you instantly whether your email was exposed and what data was taken.
Change your Vianet password immediately, change any other account where you used the same password, enable two-factor authentication on all important accounts, and monitor for phishing emails over the next 90 days.
Who was affected by the Vianet breach?
The Vianet data breach affected approximately 94,353 users who had accounts with the service. While not the largest breach on record, it still represents a significant number of compromised accounts in our database of 970+ known breaches.
If you ever created an account with Vianet or used their services, your data may have been included in this breach. Check your email now to find out. You can also read our guide on what to do immediately after a data breach.
If your email was in the Vianet breach
Change your Vianet password immediately
Go to Vianet and change your password right now. Use a strong, unique password that you have never used anywhere else.
Change any account sharing that password
If you used the same password on other sites, change it on every one of them. Attackers test stolen credentials on hundreds of popular sites within hours.
Enable two-factor authentication
Turn on 2FA on Vianet and every important account. Even if your password is known, attackers cannot get in without the second factor.
Check your other accounts for this breach
Run a full email check to see every breach your email appears in — not just this one.
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