What was exposed, when it happened, and which databases confirm it.
- accounts
- 408,158
- Breached
- August 1, 2026
- Last Update
- August 9, 2026
Were you caught in this breach?
Search your email, phone number or username against every record CheckLeaked indexes.
What happened
In August 2026, the Alcon eye care company was named in a ShinyHunters "pay or leak" extortion campaign. The group subsequently published data allegedly sourced from Alcon containing 218k unique email addresses along with other largely corporate B2B contact fields, including name, phone number and physical address.
Compromised Info
- Email addresses
- Names
- Phone numbers
- Physical addresses
Attestation
Four independent databases catalog this breach and they do not always agree. Each lane below is one source’s own count.
Sources & Link Methods
- LeakCheck— linked via automatic string matching
- HIBP
FAQ
What was leaked in the Alcon breach?
The Alcon breach exposed: Email addresses, Names, Phone numbers, and Physical addresses.
When did the Alcon breach happen?
The Alcon breach was disclosed on August 1, 2026 and affected 408,158 records.
Am I affected by the Alcon breach?
Search your email, phone or username at checkleaked.cc to find out whether your data appears in the Alcon leak.