Authy

One of the most trusted 2FA apps Authy suffered from a data breach incident that exposed Authy users' information.

Hackers create extra login devices using user information in order to add all the multi-factor verification codes for the target account.

Twilio’s investigated the attack and contacted the affected users to provide instructions on how to protect their accounts:

1. Check any connected account for ominous activity, and if there is anything off, contact the account provider.

2. Examine all the devices connected to their Authy account, and take any more they don't recognize away.

3. Advised customers to add a backup device and turn "Allow Multi-device" off in the Authy application to avoid the addition of unauthorized devices.

Source: https://securityonline.info/well-known-multi-factor-authenticator-authy-hacked/

"id": "AUT01931822",
"linkid": "authy",
"type": "Breach",
"date": "08/2022",
"severity": "100",
"impact": "6",
"explanation": "Attack threatening the economy of a geographical region"