Alcon data breach: 218K accounts exposed
Severity: medium · Patch status: no-fix-needed · Since 2026-08-09
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. Exposed data: email addresses, names, phone numbers, physical addresses. The breach dates from Aug 1, 2026; Have I Been Pwned loaded it on Aug 9, 2026.
What to do
- If you had a Alcon account, change its password and the password of any other account that reused it.
- Turn on multi-factor authentication wherever it is offered.
- Check whether your addresses are in this breach at https://haveibeenpwned.com.
- Expect targeted phishing that quotes the leaked details; verify any unexpected contact out of band.
Sources
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