gcdRadar
archive/Breaches & attacks/AIR-2026-1522
closedclosed 26 Oct 2026Breaches & attacks4 Confirmed real-world loss

Sharecare data breach exposes 318,185 accounts

Sharecare

Digital health company Sharecare suffered a data breach in August 2026 during a ShinyHunters extortion campaign. The incident exposed over 318,000 unique email addresses, corporate records, and select sensitive personal data.

why this severityConfirmed PHI/PII breach affecting 318,185 accounts.

first report
12 Oct 2026
last update
12 Oct 2026

Timeline · 1

  1. 12 Oct 2026Sharecare data breach exposes 318,185 accounts

Sources · 1

News and write-ups

  1. 2026-10-12
    Sharecare data breach exposes 318,185 accounts
    Have I Been Pwned · haveibeenpwned.com/Breach/Sharecare

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

Classification

lane
Breaches & attacks
AI role
No AI role
categories
General security
severity
4 · Confirmed real-world loss
targets
Not applicable
owasp llm top 10
no entry for these categories
mitre atlas
no technique for these categories
tags
shinyhuntersextortiondata-breach
dates
happened 12 Aug 2026 · first reported 12 Oct 2026
origin
News & research feeds
record
confidence 0.95 · created 2026-10-26 14:52Z · updated 2026-10-30 06:04Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# Sharecare data breach exposes 318,185 accounts

https://gcdradar.vercel.app/incidents/sharecare-data-breach-exposes-318-185-accounts · AIR-2026-1522 · closed 2026-10-26

- Lane: Breaches & attacks
- Severity: 4 (Confirmed real-world loss): Confirmed PHI/PII breach affecting 318,185 accounts.
- Fix status: No fix needed
- First reported: 2026-10-12 (happened 2026-08-12)
- AI role: No AI role
- Products: Sharecare

## Summary

Digital health company Sharecare suffered a data breach in August 2026 during a ShinyHunters extortion campaign. The incident exposed over 318,000 unique email addresses, corporate records, and select sensitive personal data.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-10-12: Sharecare data breach exposes 318,185 accounts (https://haveibeenpwned.com/Breach/Sharecare)

## Sources

- 2026-10-12 Have I Been Pwned: Sharecare data breach exposes 318,185 accounts https://haveibeenpwned.com/Breach/Sharecare

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

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