The massive hacking attack on Yahoo revealed
Thursday is one of biggest thefts of online users’ personal information ever,
affecting some 500 million accounts.
For Tanguy de Coatpont, head of the French
and North African divisions of Kaspersky Lab, a computer security company, it
is “the biggest in history involving a single company”.
Michael Bittan, a risk manager at Deloitte,
cautioned that it was “the biggest to be made public. There have possibly been
others that were bigger”.
At any rate, it is far from the first, and
here are other notable major corporate hacks of recent years:
Taking
aim at Target
US retail giant Target was hit by a computer
attack in December 2013 that affected 110 million clients. Seventy million
might have lost personal data including names, addresses, phone numbers and
e-mail accounts, while 40 million bank accounts and credit cards were also put
at risk.
South
Korea scramble
In January 2014, South Koreans scrambled to
stop money being siphoned from their bank accounts after it emerged that data
on 20 million credit cards had been stolen over several years.
The data was swiped by an employee from the
personal credit ratings firm Korea Credit Bureau, who then sold it to
telemarketing companies.
Password
plunder
In August 2014, online data protection firm
Hold Security claimed that Russian hackers had accessed 1.2 billion passwords
linked to 420,000 internet sites around the world, from corporate giants to
individual accounts. Hold Security pointed to a group of hackers called
“CyberVor”, which it said had potentially gained access to 500 million e-mail
accounts.
Too hot
to handle
In August 2015, hackers calling themselves
The Impact Team published nearly 30 gigabytes of files including the names and
credit card data of people who had signed up with Ashley Madison, a website for
those who wanted to have extra-marital affairs.
The company’s boss stepped down as several
suicides were linked to the revelations.
Ashley Madison had earlier offered to delete
users personal data for a modest fee, but did not, resulting in the launch of a
class-action lawsuit estimated at Can$760 million (US$578 million).
Apple
in crosshairs
In September 2015, computer security experts
discovered a virus dubbed “KeyRaider” that targetted Apple iPhones and iPads,
and which had already affected 225,000 Apple accounts.
The virus intercepted communications with
Apple’s iTunes music store, stealing information as purchases were made. Users
in 18 countries were affected.
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