Acts of Attainder were Acts passed by parliament stating that a family's land was taken from them for good because of disobedience towards the crown, usually involving the execution of a member of the family also.
Recognizances usually involved a previous debt or misconduct towards the King, with the aristocrat signing an obligation promising to behave him-self in future.
Dudley and Epsom, his chief tax collectors, confessed before their execution by Henry VIII, that the King wished "to have many persons in his danger at his pleasure".
David Loades maintains that Henry VII introduced nothing new, stating that he rebuilt the foundations of the royal authority, using, as it were, the same bricks as his predecessors, but in a different order.