As a condition of modern living, online companies such as Alertpay, Paypal, Google Checkout etc, are also often victims of these phishing scams, suggesting that, you may receive a fake email from Alertpay asking you to update your account details by following a suspicious looking link.
Never ever change, share, update any of your personal details before checking first. Call your bank, call Alertpay, call and check if the email is genuine, and remember, reputable companies never ask their clients to change such sensitive details via email.
Use a unique email address for your Alertpay account. Only share it with the buyer or seller, and no one else.
For more information on phishing and how to safeguard your account Alertpay, please visit their Security page.