2. The PlayStation Network Hack

Date: April 20, 2011

Looking back, 2011 will forever be marked as Sony’s worst year ever for one reason: the PlayStation Network hack. What started as a breach by international cyber-pranksters Anonymous, transmorgified into a month-long online service outage that compromised over 77 million user accounts—personal data, credit card info, and all. Oh, but it gets better. Sony made matters worse by executing poor management and public relations skills when it nformed PSN and Qriocity users of the intrusion nearly a week after it occurred. Financial experts claimed the incident would cost the electronics giant nearly $171 million, while Mizuho Investors Securities analyst Nobuo Kurahashi had a damage price tag of $1.25 billion.