Twitter accidentally revealed some users’ “protected” (aka, private) tweets, the company disclosed this afternoon. The “Protect your Tweets” setting typically allows people to use Twitter in a non-public fashion. These users get to approve who can follow them and who can view their content. For some Android users over a period of several years, that may not have been the case — their tweets were actually made public as a result of this bug.
The company says that the issue impacted Twitter for Android users who made certain account changes while the “Protect your Tweets” option was turned on.
For example, if the user had changed their account email address, the “Protect your Tweets” setting was disabled.