June 2026 Stealer Logs Data Breach added to Have I Been Pwned
Have I Been Pwned added a massive collection of accumulated stealer logs from various sources, comprising 56.3 million unique email addresses and 124 million unique passwords, to its database. This dataset originates from infostealer malware on infected devices, not a single corporate breach.
Signal context
First seen: Jun 15, 2026
Last updated: Jun 25, 2026
Status: Public signal
Key points
- Added to Have I Been Pwned on June 15, 2026.
- Contains 56.3 million unique email addresses.
- Contains 124 million unique passwords.
Signal analysis
BetaIt helps compare this signal with other published signals without treating the labels as final determinations.
Likely country: Location not provided
Watch ransomware, endpoint compromise and business interruption exposure.
- Source type: outside the affected organization
Impact area: Confidentiality
Likely asset: User or customer data, Server or cloud data store
- 1 signal in the same sector
- 90 signals with the same likely impact area
- 1 signal linked to this organization/domain
External sources
June 2026 Stealer Logs Data Breach - Have I Been Pwnedhttps://haveibeenpwned.com/PwnedWebsites#June2026StealerLogsPublic source from haveibeenpwned.com.
June 2026 Stealer Logs Data Breach June 2026 - What Was Exposed and What To Dohttps://www.whatwasexposed.com/breach/june-2026-stealer-logs-data-breachPublic source from whatwasexposed.com.
Related signals
Grouped by why the signal is relevant.
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Alamo Heights ISD Reports Data Breach Following Ransomware Attack
Alamo Heights Independent School District (ISD) reported a data breach impacting over 26,000 people, disclosed to the Texas Attorney General's office on June 25, 2026 (published June 26, 2026 UTC). The breach was linked to a ransomware attack by the Qilin group, which occurred on April 9, 2026. The compromised information included names, Social Security numbers, driver's license numbers, and bank and medical information.
Challenge Manufacturing Data Breach Exposes Social Security Numbers
Challenge Manufacturing, an automotive manufacturing company, disclosed a data breach to the Texas Attorney General on June 26, 2026. The Chaos ransomware group claimed responsibility on May 17, 2026, stating they obtained 270 GB of data from the company's systems.
Vienna Airport Targeted in APT73/Bashe Ransomware Attack
The ransomware group APT73/Bashe claimed responsibility for a cyberattack against Vienna Airport (Flughafen Wien AG) on June 23, 2026, threatening to leak sensitive data. The airport acknowledged a limited leakage of old cargo-related files from one email inbox but denied a broader system compromise.
AYA BANK Hit by Lapsus$ Ransomware Attack
AYA BANK, a prominent financial institution in Myanmar, fell victim to a ransomware attack by the Lapsus$ group, discovered on June 23, 2026. Lapsus$ claimed to have stolen over 120 gigabytes of data, including a full dump and PII, and threatened to sell it if a ransom was not paid. AYA Bank acknowledged a breach of an older application portal exposing some customer information but stated its core financial networks remained secure.
McKay Sugar Cyber Incident by Gentlemen Ransomware Group
McKay Sugar, a major Australian sugar producer, suffered a cyber incident that disrupted operations at its Farley and Racecourse Mills. The Gentlemen ransomware group claimed responsibility for the attack around June 15-16, 2026, on their leak site. Public reporting indicated that McKay Sugar was working to verify what data was stolen or accessed. The ransomware group claimed to have stolen over 26 million records containing PII of customers and other internal data. The incident was discussed in public reporting around June 21, 2026.