CyberServe
HIGH RISKData breach — October 2021
In October 2021, the Israeli hosting provider CyberServe was breached and ransomed before having a substantial amount of their customer data leaked publicly by a group known as "Black Shadow". Amongst the data was the LGBTQ dating site Atraf and the Machon Mor medical institute. Due to multiple different sites being compromised, the impacted data is broad and ranges from relationship information to medical data to email addresses and passwords stored in plain text. The data was made available to HIBP with support from May Brooks-Kempler, founder of the Think Safe Cyber community in Israel.
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What happened in the CyberServe data breach?
In October 2021, the Israeli hosting provider CyberServe was breached and ransomed before having a substantial amount of their customer data leaked publicly by a group known as "Black Shadow". Amongst the data was the LGBTQ dating site Atraf and the Machon Mor medical institute. Due to multiple different sites being compromised, the impacted data is broad and ranges from relationship information to medical data to email addresses and passwords stored in plain text. The data was made available to HIBP with support from May Brooks-Kempler, founder of the Think Safe Cyber community in Israel.
The exposed data included 19 types of personal information. Because passwords were exposed, users who reused their password on other sites are at particular risk. Learn more about what a data breach means for you.
Quick answer — was CyberServe hacked?
Yes. CyberServe was breached in October 2021. The breach exposed 1,107,034 records including dates of birth, drinking habits, email addresses. 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 CyberServe breach so dangerous?
The CyberServe breach exposed 1,107,034 records — that is 1.1M people whose personal data is now circulating on the dark web. The combination of dates of birth, drinking habits, email addresses makes this a high-risk breach that requires immediate action.
Because passwords were exposed, attackers can use credential stuffing to automatically test your CyberServe password against hundreds of other websites. If you reused your password anywhere, those accounts are now at risk. Read more about what happens to your data after a breach.
Don't wait to find out — check if your email was exposed in this breach now.
What data was stolen in the CyberServe breach?
Dates of birth — used to verify identity for account takeover and fraud
Drinking habits — may be combined with other breach data to build a profile for targeted attacks
Email addresses — used for phishing attacks and credential stuffing against your other accounts
Family structure — may be combined with other breach data to build a profile for targeted attacks
Genders — may be combined with other breach data to build a profile for targeted attacks
Geographic locations — may be combined with other breach data to build a profile for targeted attacks
HIV statuses — may be combined with other breach data to build a profile for targeted attacks
IP addresses — combined with other data, used for identity theft and physical fraud
Names — used to build profiles and target you with personalised scams
Passwords — can be used to access your accounts directly or cracked to reveal your actual password
Personal health data — may be combined with other breach data to build a profile for targeted attacks
Phone numbers — enables SIM swapping attacks and targeted SMS phishing scams
Physical attributes — combined with other data, used for identity theft and physical fraud
Private messages — may be combined with other breach data to build a profile for targeted attacks
Profile photos — may be combined with other breach data to build a profile for targeted attacks
Religions — may be combined with other breach data to build a profile for targeted attacks
Sexual orientations — may be combined with other breach data to build a profile for targeted attacks
Smoking habits — may be combined with other breach data to build a profile for targeted attacks
Usernames — used to build profiles and target you with personalised scams
Is the CyberServe breach still dangerous in 2026?
Yes. Stolen data from the CyberServe 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 2021 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 CyberServe 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 CyberServe breach
Approximately 1,107,034 user records were exposed in the CyberServe breach in October 2021.
Yes. Leaked credentials are actively used in credential stuffing attacks years after a breach. If you reused your CyberServe 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 CyberServe dataset and tell you instantly whether your email was exposed and what data was taken.
Change your CyberServe 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 CyberServe breach?
The CyberServe data breach affected approximately 1,107,034 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 CyberServe 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 CyberServe breach
Change your CyberServe password immediately
Go to CyberServe 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 CyberServe 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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