B2B USA Businesses
MEDIUM RISKData breach — July 2017
In mid-2017, a spam list of over 105 million individuals in corporate America was discovered online. Referred to as "B2B USA Businesses", the list categorised email addresses by employer, providing information on individuals' job titles plus their work phone numbers and physical addresses. Read more about spam lists in HIBP.
search Check if you were affected — freeData exposed in this breach
What happened in the B2B USA Businesses data breach?
In mid-2017, a spam list of over 105 million individuals in corporate America was discovered online. Referred to as "B2B USA Businesses", the list categorised email addresses by employer, providing information on individuals' job titles plus their work phone numbers and physical addresses. Read more about spam lists in HIBP.
The exposed data included 6 types of personal information. Learn more about what a data breach means for you.
Quick answer — was B2B USA Businesses hacked?
Yes. B2B USA Businesses was breached in July 2017. The breach exposed 105,059,554 records including email addresses, employers, job titles. 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 B2B USA Businesses breach so dangerous?
The B2B USA Businesses breach exposed 105,059,554 records — that is 105.1M people whose personal data is now circulating on the dark web. The combination of email addresses, employers, job titles 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 B2B USA Businesses breach?
Email addresses — used for phishing attacks and credential stuffing against your other accounts
Employers — may be combined with other breach data to build a profile for targeted attacks
Job titles — may be combined with other breach data to build a profile for targeted attacks
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 B2B USA Businesses breach still dangerous in 2026?
Yes. Stolen data from the B2B USA Businesses 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 2017 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 B2B USA Businesses 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 B2B USA Businesses breach
Approximately 105,059,554 user records were exposed in the B2B USA Businesses breach in July 2017.
Yes. Leaked credentials are actively used in credential stuffing attacks years after a breach. If you reused your B2B USA Businesses 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 B2B USA Businesses dataset and tell you instantly whether your email was exposed and what data was taken.
Change your B2B USA Businesses 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 B2B USA Businesses breach?
The B2B USA Businesses data breach affected approximately 105,059,554 users who had accounts with the service. With 105.1M records exposed, this is one of the larger breaches tracked in our database of 970+ known breaches.
If you ever created an account with B2B USA Businesses 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 B2B USA Businesses breach
Change your B2B USA Businesses password immediately
Go to B2B USA Businesses 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 B2B USA Businesses 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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