In terms of security, Affirm takes a number of steps to protect personal data. This includes using encryption to secure data and conducting background checks for all employees. In terms of whether Affirm is safe from a financial perspective, there are some risks. Though Affirm touts itself as an alternative to racking up debt, you're still creating a financial obligation when you use this payment service. A point of sale installment loan is still a loan, after all. So even if you're paying 0% interest, you're still borrowing money you have to pay back. Take out too many Affirm loans and you run the risk of falling behind on payments. So it's important to consider how much you can afford when applying for buy now, pay later financing.