Few notes towards making honeyword system more secure and usable

Traditionally the passwords are stored in hashed format. However, if the password file is compromised then by using the brute force attack there is a high chance that the original passwords can be leaked. False passwords -- also known as honeywords, are used to protect the original passwords from such leak. A good honeyword system is dependent on effective honeyword generation techniques. In this paper, the risk and limitations of some of the existing honeyword generation techniques have been identified as different notes. Three concepts -- modified tails, close number formation and caps key are introduced to address the existing issues. The experimental analysis shows that the proposed techniques with some preprocessing can protect high percentage of passwords. Finally a comparative analysis is presented to show how the proposed approaches stand with respect to the existing honeyword generation approaches.