1. A method for detecting pestware on a computer, comprising: detecting a primary pestware process in an executable memory of the computer, the primary pestware process including an associated check value by which the primary pestware process can be identified; locating, at a predetermined offset in the executable memory relative to the check value, a pointer to a string, wherein the pointer to the string is a variable that is located within the executable memory occupied by the primary pestware process and whose value is the address of the string, the string comprising an address of a secondary pestware object stored on the computer, wherein the string is located in the executable memory occupied by the primary pestware process; following the pointer to the string to ascertain the address of the secondary pestware object; using the ascertained address to locate the secondary pestware object; and removing the secondary pestware object from the computer.