In the escalating war on data security, data breaches are an enemy that can infiltrate your digital systems and cause damage to an organisation. The damage can not only last years but can have implications for the sector more broadly. In the fight to secure this new frontier of cyber battles, is the donor information you hold your prize or your biggest volatility? Will what you hold onto blow up in your hands? In 2021 Oxfam Australia suffered a data breach which resulted in loss of up to 1.7 million supporter records. We will take you through what we lost, what we gained, how supporters reacted, what we did to keep them and how we came to accept letting go of supporter data more than seven years old. We will show you what we tested, what we learnt, how our fundraising survived and how we are better as a privacy first organisation.