In early 2013, tumblr suffered a data breach which resulted in the exposure of over 65 million accounts. The data was later put up for sale on a dark market website and included email addresses and passwords stored as salted SHA1 hashes.
Breached websites & Apps, Information leakages.
A security/data breach is the intentional or unintentional security incident in which information was accessed without authorization. Release of secure or private/confidential information to public can hurt businesses and consumers in a many of ways.
Other reference: security compromise, data leak, information disclosure, information leakage, data spill.
List of all known breaches.
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In early 2013, the online fantasy multiplayer game Heroes of Gaia suffered a data breach. The newest records in the data set indicate a breach date of 4 January 2013 and include usernames, IP and email addresses but no passwords.
In 2013, the Danish social media site FaceUP suffered a data breach. The incident exposed 87k unique email addresses alongside genders, dates of birth, names, phone numbers and passwords stored as unsalted MD5 hashes. When notified of the incident, FaceUP advised they had identified a SQL injection vulnerability at the time and forced password resets on impacted customers.
In December 2012, the multiplayer online battle arena game known as Heroes of Newerth was hacked and over 8 million accounts extracted from the system. The compromised data included usernames, email addresses and passwords.
In July 2018, the Belgian social networking site Netlog identified a data breach of their systems dating back to November 2012 (PDF). Although the service was discontinued in 2015, the data breach still impacted 49 million subscribers for whom email addresses and plain text passwords were exposed.
In August 2012, the fashion site Lookbook suffered a data breach. The data later appeared listed for sale in June 2016 and included 1.1 million usernames, email and IP addresses, birth dates and plain text passwords.
In August 2012, the Xiaomi user forum website suffered a data breach. In all, 7 million email addresses appeared in the breach although a significant portion of them were numeric aliases on the bbs_ml_as_uid.xiaomi.com domain. Usernames, IP addresses and passwords stored as salted MD5 hashes were also exposed.
In July 2012, Yahoo! had their online publishing service "Voices" compromised via a SQL injection attack. The breach resulted in the disclosure of nearly half a million usernames and passwords stored in plain text.
In mid-2012, the real-time strategy game War Inc. suffered a data breach. The attack resulted in the exposure of over 1 million accounts including usernames, email addresses and salted MD5 hashes of passwords.
In mid-2012, Dropbox suffered a data breach which exposed the stored credentials of tens of millions of their customers. In August 2016, they forced password resets for customers they believed may be at risk.
In October 2017, the blog commenting service Disqus announced they'd suffered a data breach. The breach dated back to July 2012 but wasn't identified until years later when the data finally surfaced. The breach contained over 17.5 million unique email addresses and usernames.
In June 2012, the multiplayer online game League of Legends suffered a data breach. At the time, the service had more than 32 million registered accounts and the breach affected various personal data attributes including "encrypted" passwords.
In May 2012, the web hosting, billing and automation company WHMCS suffered a data breach that exposed 134k email addresses. The breach included extensive information about customers and payment histories including partial credit card numbers.
In May 2016, LinkedIn had 164 million email addresses and passwords exposed. Originally hacked in 2012, the data remained out of sight until being offered for sale on a dark market site 4 years later.
In March 2012, the music website Last.fm was hacked and 43 million user accounts were exposed. Whilst Last.fm knew of an incident back in 2012, the scale of the hack was not known until the data was released publicly in September 2016.
In October 2017, the Malaysian website lowyat.net ran a story on a massive set of breached data affecting millions of Malaysians after someone posted it for sale on their forums.
In March 2012, the German online game publisher Gamigo was hacked and more than 8 million accounts publicly leaked. The breach included email addresses and passwords stored as weak MD5 hashes with no salt.
In February 2012, the adult website YouPorn had over 1.3M user accounts exposed in a data breach. The publicly released data included both email addresses and plain text passwords.
In approximately 2012, the Russian social media site known as VK was hacked and almost 100 million accounts were exposed. The data emerged in June 2016 where it was being sold via a dark market website and included names, phone numbers email addresses and plain text passwords.
In approximately 2012, it's alleged that the Chinese shopping site known as Taobao suffered a data breach that impacted over 21 million subscribers. Whilst there is evidence that the data is legitimate, due to the difficulty of emphatically verifying the Chinese breach it has been flagged as "unverified". The data in the breach contains email addresses and plain text passwords.
In approximately 2012, it's alleged that the Chinese email service known as 126 suffered a data breach that impacted 6.4 million subscribers. Whilst there is evidence that the data is legitimate, due to the difficulty of emphatically verifying the Chinese breach it has been flagged as "unverified". The data in the breach contains email addresses and plain text passwords.
In late 2011, a series of data breaches in China affected up to 100 million users, including 7.5 million from the gaming site known as 17173. Whilst there is evidence that the data is legitimate, due to the difficulty of emphatically verifying the Chinese breach it has been flagged as "unverified".
In December 2011, China's largest online forum known as Tianya was hacked and tens of millions of accounts were obtained by the attacker. The leaked data included names, usernames and email addresses.
In December 2011, "Anonymous" attacked the global intelligence company known as "Stratfor" and consequently disclosed a veritable treasure trove of data including hundreds of gigabytes of email and tens of thousands of credit card details which were promptly used by the attackers to make charitable donations (among other uses).
In December 2011, the Chinese dating site known as Zhenai.com suffered a data breach that impacted 5 million subscribers. Whilst there is evidence that the data is legitimate, due to the difficulty of emphatically verifying the Chinese breach it has been flagged as "unverified". The data in the breach contains email addresses and plain text passwords.
In December 2011, Norway's largest online sex shop hemmelig.com was hacked by a collective calling themselves "Team Appunity". The attack exposed over 28,000 usernames and email addresses along with nicknames, gender, year of birth and unsalted MD5 password hashes.
In late 2011, data was allegedly obtained from the Chinese website known as Dodonew.com and contained 8.7M accounts. Whilst there is evidence that the data is legitimate, due to the difficulty of emphatically verifying the Chinese breach it has been flagged as "unverified". The data in the breach contains email addresses and user names.
In October 2011, the Android Forums website was hacked and 745k user accounts were subsequently leaked publicly. The compromised data included email addresses, user birth dates and passwords stored as a salted MD5 hash.
In mid-2011, data was allegedly obtained from the Chinese engineering website known as Civil Online and contained 7.8M accounts. Whilst there is evidence that the data is legitimate, due to the difficulty of emphatically verifying the Chinese breach it has been flagged as "unverified". The data in the breach contains email and IP addresses, user names and MD5 password hashes.
In June 2011 as part of a final breached data dump, the hacker collective "LulzSec" obtained and released over half a million usernames and passwords from the game Battlefield Heroes. The passwords were stored as MD5 hashes with no salt and many were easily converted back to their plain text versions.