TD Ameritrade Data Breach History

This page tracks the TD Ameritrade data breach history and cybersecurity incidents affecting TD Ameritrade (United States). BreachHistory currently indexes 5 publicly disclosed or catalogued incidents spanning 2005 through 2007, with approximately 12.8 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 TD Ameritrade 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.

Largest TD Ameritrade Data Breaches

The largest indexed incidents include the 2007 — TD Ameritrade: TD Ameritrade settled a class action lawsuit to…, the 2007 — TD Ameritrade: One of TD Ameritrade's databases was hacked and…, and the 2005 — TD Ameritrade: Lost / stolen device, 200,000 records, along with additional historical incidents involving exposed passwords, public databases, and large-scale data scraping. Record counts originating from threat actors or leak sites should be treated as estimates unless confirmed by TD Ameritrade or a regulator. Below is the list of large data breaches:

• 2007 2007 — TD Ameritrade: TD Ameritrade settled a class action lawsuit to… — about 6.3M records exposed · Catalogued incident
• 2007 2007 — TD Ameritrade: One of TD Ameritrade's databases was hacked and… — about 6.3M records exposed · Catalogued incident
• 2005 2005 — TD Ameritrade: Lost / stolen device, 200,000 records — about 200.0K records exposed · Catalogued incident
• 2006 2006 — TD Ameritrade: According to a letter sent to around 300 current… — about 300 records exposed · Catalogued incident

What Information Was Exposed?

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

TD Ameritrade Data Breach 2026

At the time of this update, no TD Ameritrade data breach has been catalogued for 2026. 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 TD Ameritrade 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 TD Ameritrade 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.