This tip was submitted to the searchSecurity Tip Exchange by user Ed Matsuoka. Let other users know how useful it is by rating the tip below. Here are two ways to stop password farming. If every computer that accesses a network has a synchronized clock, you can have passwords that only work in 15 second windows. Which window works can be changed every day. Similarly, you can use two passwords that only work if entered in a set period of time (say, between 25-50 seconds).
This was first published in November 2001