Exactis Data Breach History

This page tracks the Exactis data breach history and cybersecurity incidents affecting Exactis (United States). BreachHistory currently indexes 2 publicly disclosed or catalogued incidents spanning 2018 through 2026, with approximately 351.0 million records reported as exposed across all indexed events. These totals may include overlapping datasets or third-party estimates and should not be interpreted as unique affected users.

The Exactis breach timeline includes major data breaches, cyber attacks, data leaks, credential exposures, API abuse, and other security incidents. Each incident provides details on the estimated records exposed, attack method, affected data types, and supporting public sources. Currently, 0 incidents are company-confirmed, while 1 remain unverified claims pending independent verification.

Largest Exactis Data Breaches

The largest indexed incidents include the 2018 Database exposure — 340M and the 2026 Exactis — DarkForums consumer-data repost claim (unverified); 11M alleged. Record counts originating from threat actors or leak sites should be treated as estimates unless confirmed by Exactis or a regulator. Below is the list of large data breaches:

• 2018 2018 Database exposure — 340M — about 340.0M records exposed · Catalogued incident
• 2026 2026 Exactis — DarkForums consumer-data repost claim (unverified); 11M alleged — about 11.0M records exposed · Unverified claim

What Information Was Exposed?

Depending on the incident, exposed data may include email addresses, phone numbers, names, physical addresses, and other personal information (PII). The exact data varies between incidents, so review each breach page before assuming your information was affected.

Exactis Data Breach 2026

At the time of this update, BreachHistory catalogues 1 2026 incident related to Exactis. Most recent entry: 2026 Exactis — DarkForums consumer-data repost claim (unverified); 11M alleged. New incidents are added as official disclosures, regulatory filings, or credible cybersecurity reports become available.

What To Do If You Were Affected

If you believe your account may have been involved in a Exactis data breach, change any reused passwords, enable multi-factor authentication (MFA), monitor your account for suspicious activity, and be cautious of phishing emails or fake breach notifications.

This Exactis breach history is maintained by BreachHistory using public disclosures, regulatory filings, security research, and clearly labelled third-party claims. For the complete breach timeline, records exposed, incident details, and AI Breach Risk Score, explore the sections on this page.