Vishing (voice phishing or VoIP phishing) is an electronic fraud tactic where individuals are deceived over the phone into revealing critical information, whether it's financial or personal, to unauthorized entities. For instance, during the attack, they might be asked for user identifiers, passwords, or security questions. A vishing attack can be conducted through a voicemail, a smartphone, VoIP (voice over IP), or a landline phone.

The potential victim receives a message, often generated by voice synthesis or simulated in real-time, stating that suspicious activity has occurred in their account or some financial service under their name. They are instructed to call a specific phone number and provide information to verify their identity or to ensure that fraud doesn't occur. This information might also be requested in the initial call. If the attack is carried out over the phone, caller ID might recognize the fraudulent number as a legitimate one from a financial institution through spoofing.

You can protect yourself by trying to identify any unsolicited or unexpected messages or calls that might seem like illegal or suspicious activity. Instead of calling the provided number, you should immediately end the call and contact valid channels directly. For example, send a message to Bitso's Help Center (https://help.bitso.com/es-LA/support/home) to verify recent activity and ensure that your account information hasn't been altered or modified without authorization.