Yes, using GCash as a payment method for purchasing load credits or data promos is a legitimate and secure option. GCash is a widely-used digital wallet in the Philippines that allows users to conveniently and securely make various transactions, including mobile load purchases. When using GCash to pay for your load or data promo, make sure to double-check the details before confirming the transaction to avoid any errors. Additionally, GCash provides security features to protect your account and transactions, such as PIN verification and transaction notifications.