Twitter bug for third-party app developers exposes 3 million DMs to outsiders

The bug ran from May 2017 and within hours of discovering it on September 10, said Twitter.

A bug in Twitter's platform for third-party app developers exposed some Direct Messages (DMs) from nearly 3 million users to outsiders, the micro-blogging platform has admitted.

FILE PHOTO: People holding mobile phones are silhouetted against a backdrop projected with the Twitter logo in this illustration picture taken September 27, 2013. REUTERS/Kacper Pempel/Illustration/File Photo - S1AEUIXLWVAA

Twitter.

The bug ran from May 2017 and within hours of discovering it on September 10, Twitter said it fixed the bug to prevent data from being unintentionally sent to the incorrect developer.

"The bug affected less than 1 percent of people on Twitter. The bug may have caused some of these interactions to be unintentionally sent to another registered developer," Twitter said in a blog post on Saturday.

"In some cases, this may have included certain DMs or protected tweets, for example a Direct Message with an airline that had authorised an Account Activity API (AAAPI) developer."

The Account Activity API allows registered developers to build tools to better support businesses and their communications with customers on Twitter.

Twitter currently has over 336 million users and one per cent means nearly 3 million of those were affected.

If your business authorised a developer using the AAAPI to access your account, the bug may have impacted your activity data in error.

"We're very sorry this happened. If your account was affected by this bug, we will contact you directly through an in-app notice and on twitter.com," said the company.

In May, the micro-blogging platform asked its 336 million users to change their password across its services after it discovered a bug that stored passwords in plain text in an internal system.

Twitter said it found no sign that hackers accessed the exposed data but advised users that they should enter a new password on all services where their current password has been used.

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