According to Odaily Planet Daily, SlowMist Chief Information Security Officer 23pds said in a post that Authy, a popular 2FA service second only to Google Authenticator, was hacked and leaked the phone numbers of 33 million users. He warned Authy users to be wary of phishing attacks. Currently, Authy's official developer Twilio has confirmed the vulnerability. It is worth noting that a large number of practitioners in the cryptocurrency industry use this 2FA software, so they need to pay special attention to asset security.