2011 — Best Buy: Though Best Buy was affected by the large Epsilon…

Though Best Buy was affected by the large Epsilon breach, it had a second, separate breach of customer emails.  A former third party vendor experienced a breach that may have exposed customer email addresses.  Best Buy is pursuing legal action and had already ended its business relationship with the vendor. It is unclear why the vendor still had Best Buy customer information.  It is likely that the unnamed vendor's breach affected customers of other businesses as well.