The recent attack on Premera Blue Cross is the latest in a long series of data breaches at corporations in the U.S. by hackers seeking customer credit card numbers,
user passwords, internal documents and emails. Here’s a tally of what hackers have made off with, and how the stock market reacted—or didn't—in
the immediate aftermath.
U.S. STOCK PRICE
RECORDS STOLEN
TYPE
Premera Blue Cross
Announced: 03/18/2015
The company, which discovered the breach in January, says hackers may have accessed Social Security numbers, bank accounts and medical information.
Records lost11M
Types of recordsCredit card numbers Bank accounts Social Security numbers Proprietary information Employee details Email addresses Physical addresses Login credentials
Data Breaches Since 2005
Since 2005, more than 75 data breaches in which 1,000,000 or more records were compromised have been publicly disclosed. The attacks on Home Depot and EBay in 2014, and on Target at the end of 2013, indicate an increase in attacks on retail and merchant data.
