20.9K accounts from Bell (2014 breach) (bell.ca) were exposed in this breach. Besides email addresses, it included credit cards and passwords, which makes it a high-risk breach.
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Credit cardsGendersPasswordsUsernames
In February 2014, Bell Canada suffered a data breach via the hacker collective known as NullCrew. The breach included data from multiple locations within Bell and exposed email addresses, usernames, user preferences and a number of unencrypted passwords and credit card data from 40,000 records containing just over 20,000 unique email addresses and usernames.
Source: Have I Been Pwned (CC BY 4.0)