Articles about Twitter security

Following numerous complaints from users concerned that the Circles feature of Twitter was broken, the company has conceded that tweets that were supposed to be visible to only a select number of people were in fact accessible by anyone.

The idea of Twitter Circles is that messages can be seen only by people who have been added to a Circle. But Twitter has now revealed "a security incident that occurred earlier this year" that ignored privacy settings.

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Two-factor authentication (2FA) is an important means of securing accounts, making it significantly harder for hackers to gain unauthorized access. So it is perhaps a little surprising that Twitter has announced that it is locking one of the most popular 2FA methods behind a paywall.

The company has announced that SMS-based two-factor authentication will only be available to paying Twitter Blue subscribers. The change will take effect on March 20, and after this date non-paying Twitter users will be limited to securing their account with either an authentication app or a physical security key.

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Twitter has confirmed that a hacker was able to exploit a security vulnerability on the social platform earlier this year, gaining access to the private data of millions of users.

In total, 5.4 million accounts were affected, with the attacker able to link account names to email addresses and phone numbers. While the incident took place back in January this year, Twitter has also revealed that the exposed user data was made available to buy just last month. In what will be regarded by many as something of an understatement, the company says that "it is unfortunate that this happened".

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In a recently published transparency report, Twitter has revealed figures that show a disappointing adoption of 2FA (two-factor authentication) by users.

While the number of users choosing to secure their account with 2FA is on the increase, it "remains relatively low", says Twitter. And we are talking low numbers here -- a mere 2.3 percent of the Twitter userbase is concerned enough about security to enable two-factor authentication.

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