Klark.ai Data Breach History

This page tracks the Klark.ai data breach history and cybersecurity incidents affecting Klark.ai (France). BreachHistory currently indexes 1 publicly disclosed or catalogued incident spanning 2026, with approximately 500 thousand 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 Klark.ai 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 Klark.ai Data Breaches

The largest indexed incidents include the 2026 Klark.ai — 0xSec claim; ~500k people / 140GB support chats + API secrets (unv…. Record counts originating from threat actors or leak sites should be treated as estimates unless confirmed by Klark.ai or a regulator. Below is the list of large data breaches:

• 2026 2026 Klark.ai — 0xSec claim; ~500k people / 140GB support chats + API secrets (unverified) — about 500.0K records exposed · Unverified claim

What Information Was Exposed?

Depending on the incident, exposed data may include email addresses, passwords and login credentials, phone numbers, names, bank account details, private messages and communications, and other personal information (PII). The exact data varies between incidents, so review each breach page before assuming your information was affected.

Klark.ai Data Breach 2026

At the time of this update, BreachHistory catalogues 1 2026 incident related to Klark.ai. Most recent entry: 2026 Klark.ai — 0xSec claim; ~500k people / 140GB support chats + API secrets (unverified). 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 Klark.ai 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 Klark.ai 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.