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Change the password
On the breached site and everywhere else you reused it. Make every password unique.
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Mckesson.com breach: questions and answers
When did the Mckesson.com data breach happen?
The Mckesson.com breach dates to August 2026.
How many records were leaked in the Mckesson.com breach?
LeakCheck has indexed 5,167,839 records from the Mckesson.com breach.
What data was exposed in the Mckesson.com breach?
The leaked records include email addresses, names, phone numbers, dates of birth, physical addresses, geographic locations and social security numbers.
Were passwords exposed in the Mckesson.com breach?
No. The records indexed from Mckesson.com do not include passwords — but the other details they hold can still be used for phishing.
How do I check if my data was in the Mckesson.com breach?
Enter your email address, username or phone number in the search form on this page. The free check shows whether your data appears in the Mckesson.com breach — and in any of the other 1,468 sources LeakCheck indexes.
What should I do if my data was in the Mckesson.com breach?
Change the password you used on Mckesson.com and everywhere you reused it, turn on two-factor authentication, and watch for phishing that quotes details from the leak. To hear about the next breach first, set up breach monitoring.