During the Death Eaters' reign over the wizarding world, security was tightened, and guards used Probity Probe to search anyone attempting to enter the bank. On 1 May, 1998 Marius and another guard were confunded by Harry Potter, who broke into Gringotts with Hermione Granger (disguised as Bellatrix Lestrange), Ron Weasley (disguised as Dragomir Despard), and the former-employee Griphook, in order to steal one of Voldemort's Horcruxes from the Lestrange Vault.