An example fraud analysis platform may receive timing information associated with a user interaction during a transaction, wherein the user interaction is associated with a user engaging in a transaction using a transaction account and a transaction device to access the transaction account. The fraud analysis platform may generate, based on the timing information, a transaction interaction signature associated with the user interaction. The fraud analysis platform may compare the transaction interaction signature to a reference signature associated with an authorized user of a transaction account. The fraud analysis platform may determine, based on the transaction interaction signature being associated with the reference signature, that the user interaction was performed by the authorized user of the transaction account. The fraud analysis platform may perform, based on determining that the user interaction was performed by the authorized user, an action associated with the transaction or transaction account.