Safety & security online If you’re banking online, good security is essential. Our online banking security measures help keep you safe, and we also look at the practical things you can do to protect yourself. Westpac Online Guardian Our Online Guardian system helps us to detect and stop fraudulent online transactions, and is a key part of how we keep you safe. How we keep you safe online Our full range of security measures, including our Online Banking Guarantee and dedicated in-house fraud team, helps to keep your online experience as safe as possible. How to keep yourself safe Protect yourself and your personal computer or device against fraud, including keeping an eye out for phishing scams. Report a phishing scam Have you received a suspicious email that looks like a phishing scam? Please report it to us here Mastercard® Identity Check At Westpac it's our job to keep you safer while you're online shopping, and to make sure the only person making purchases with your credit or debit card is you.