• Hundreds or thousands of login or checkout attempts
This kind of activity can indicate that a credential stuffing or carding attack is taking or has taken place.
• Inhuman user behaviors
Simple bots scroll sites more quickly and precisely than humans do, though it is important to note that sophisticated bots mimic human behavior.
• Spikes in password reset requests
After fraudsters take over an account, they immediately change the password.
• Spikes in help desk calls
Consumers will likely contact customer support if they are notified of an unauthorized login to their account or if they are locked out of their accounts because of an unauthorized password change.
• Unusually high numbers of chargeback requests
This kind of activity can indicate someone is buying with an unauthorized account.
• Spikes in shipping address changes
This can indicate an account has been compromised by shipping fraud, where criminals use drop-shippers (entities that sell products that aren’t in stock) or mules (accounts for money laundering) to forward illegal purchases.