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Yet another attack in February took place, this time against popular microblogging platform Twitter.
In a blog post, Twitter said "unusual access patterns" allowed the company to discover attacks on Twitter data. The subsequent investigation found that the usernames, email addresses, session tokens and encrypted versions of passwords for 250,000 users were potentially placed at risk.
The firm said that the cyberattack "was not the work of amateurs," and was unlikely to be an isolated scenario.
As a result, Twitter reset passwords for these accounts, notifying those impacted via email. In addition, the social network suggested that Java be disabled on user browsers.
Following the breach, Twitter rolled out support for two-factor authentication to bolster security.
In March this year, the popular note-taking platform's master website was hacked, and account information of its users accessed.
Evernote, known for its mobile device applications, detected the attack early on, but the hacker or group responsible were still able to access user information including names, email addresses and encrypted passwords -- the latter luckily both hashed and salted.
As a precaution, Evernote required all of its users to change their passwords.
In a statement to sister site CNET, an Evernote representative said:
"At this time we believe we have blocked any unauthorized access, however security is Evernote's first priority. This is why, in an abundance of caution, we are requiring all users to reset their Evernote account passwords before their next Evernote account log-in. We are actively communicating to our users about this attack through our blog, direct e-mails, social media, and support. This simple step of users creating strong, new passwords will help ensure that user accounts remain secure."
In April this year, LivingSocial confirmed it was another major outlet to be the victim of cyberattack.
The daily deals website discovered its database systems were breached, while unknown hackers made off with the names, emails, birthdays and encrypted passwords of the vast majority of users -- roughly 50 million accounts in total out of 70 million worldwide.
However, credit card and banking information was not accessed.
The Washington, D.C.-based site is owned in part by online retailer Amazon, and has divisions internationally. Only Thailand, Korea, Indonesia and the Philippines were not affected, as their data systems are different.