Data breach
Apollo.io data breach
In 2026, Apollo.io suffered a data breach affecting 515,766 records. Exposed data included names, surnames, email addresses and 4 other types of data.
Breach date
515 766
Records in the breach
7
Types of data exposed
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Data exposed in the Apollo.io breach
- Names
- Surnames
- Email Addresses
- Employment Information
- Phone Numbers
- LinkedIn URLs
- Location
About the breach
Apollo.io has experienced major data exposures and security incidents over its history:
• January 2026 Incident: A dataset tied to Apollo.io was spotted on underground hacking forums (such as CrackingX), exposing hundreds of thousands to tens of millions of professional records, including names, business email addresses, job titles, company names, and locations.
• 2018 Major Database Exposure: Apollo (formerly ZenProspect) left a massive database of over 100 million business contact and prospect records exposed on an unprotected Amazon S3 bucket, which was discovered by security researchers.
(Note: Major financial institution Apollo Global Management also reported a separate social engineering data breach in July 2026, though it is a distinct entity from the sales intelligence platform Apollo.io).
What Data Was Typically Exposed?
• Names and business email addresses
• Job titles and company/employer names
• Business phone numbers and LinkedIn profile URLs
• Geographic locations and firmographics
Crucially, these incidents primarily involved business contact and prospecting data rather than sensitive financial data, passwords, or government-issued IDs.
• January 2026 Incident: A dataset tied to Apollo.io was spotted on underground hacking forums (such as CrackingX), exposing hundreds of thousands to tens of millions of professional records, including names, business email addresses, job titles, company names, and locations.
• 2018 Major Database Exposure: Apollo (formerly ZenProspect) left a massive database of over 100 million business contact and prospect records exposed on an unprotected Amazon S3 bucket, which was discovered by security researchers.
(Note: Major financial institution Apollo Global Management also reported a separate social engineering data breach in July 2026, though it is a distinct entity from the sales intelligence platform Apollo.io).
What Data Was Typically Exposed?
• Names and business email addresses
• Job titles and company/employer names
• Business phone numbers and LinkedIn profile URLs
• Geographic locations and firmographics
Crucially, these incidents primarily involved business contact and prospecting data rather than sensitive financial data, passwords, or government-issued IDs.
How to protect yourself
In order to protect yourself, we recommend the following:
1. Monitor your credit report for any suspicious activities. If you cannot do this yourself, make use of any service that does this on your behalf.
2. Be on the lookout for an increase in number of spam or scam calls and emails. We recommend you make use of Apps like True Caller, which can assist you in identifying any possible spam or scam calls.
3. Be sure to monitor your bank account transactions. Ensure you receive real time notifications on any transaction.
1. Monitor your credit report for any suspicious activities. If you cannot do this yourself, make use of any service that does this on your behalf.
2. Be on the lookout for an increase in number of spam or scam calls and emails. We recommend you make use of Apps like True Caller, which can assist you in identifying any possible spam or scam calls.
3. Be sure to monitor your bank account transactions. Ensure you receive real time notifications on any transaction.
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