The app is perfectly safe to use as all your information is protected using state-of-the-art encryption algorithms. In addition to this, Paddy Power security teams continually monitor everything that happens, looking for any potential irregularities.
Same as the mobile app, the website is also protected; the system filters the incoming traffic and blocks suspicious users from entering. There is an intrusion detection system, regular penetration tests, and other software that keep you and your privacy well-guarded.
Paddy Power also has certificates confirming they are PCI compliant, meaning your payment data is secure, and they have ISO certificate, which is the global Information Security Management standard.