critical severity July 23, 2018 · 1 min read

Apollo Data Breach (2018)

If you are a customer of Apollo, here’s what’s now in circulation.

In July 2018, the sales engagement startup Apollo left a database containing billions of data points publicly exposed without a password. The data was discovered by security researcher Vinny Troia who subsequently sent a subset of the data containing 126 million unique email addresses to Have I Been Pwned. The data left exposed by Apollo was used in their "revenue acceleration platform" and included personal information such as names and email addresses as well as professional information including places of employment, the roles people hold and where they're located. Apollo stressed that the

What the free scan actually returns

Sample resultyou@email.comIllustrative — not a real person

Found on people-search siteswe remove these

These listings are live, public, and legal to remove — and removing them is what we do.

value redacted in this sampleage, relatives, address historySpokeo

value redacted in this samplephone, household, property recordsBeenVerified

value redacted in this sample580 companies checked

Found in breach recordsverifiedreported — unverified

Each record is labeled: confirmed breach data, or an attacker’s claim no one has verified.

verifiedvalue redacted in this samplepassword + phone · 2024telecom breach

unverifiedvalue redacted in this sampleclaimed in ransomware listing · 2026leak-site claim

Leaked data cannot be deleted from the internet — anyone claiming otherwise is lying. Broker listings can be removed. We do the second, and show you exactly what to fix from the first.

Were you a Apollo customer?

Apollo is one listing. Your email is probably in others.

125.9M accounts were exposed here. Check whether yours is one — and find every other leak tied to the same address, in about 15 seconds. No account, no card.

Report details & sourcing

Severity Critical contact details only, none of them permanent

Disclosed July 23, 2018

Last reviewed July 22, 2026

Affected 125.9M

Data exposed Email addressesEmployersGeographic locationsJob titlesNamesPhone numbersSalutationsSocial media profiles

By GalaxyWarden Threat Research · Editorial & sourcing standards

Editorial & sourcing policy

GalaxyWarden is a breach-monitoring service and news aggregator. We do not exfiltrate, host, purchase, or redistribute stolen data. Breach information is compiled from publicly accessible sources and threat-intelligence platforms, and is reported as claims attributed to their source. We promptly correct or remove material shown to be inaccurate — see our content & takedown policy or write to support@galaxywarden.com.

Sources: Have I Been Pwned

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