A rainbow table is a large, precomputed table designed to cache the output of cryptographic hash functions to decrypt hashed passwords into plaintext. Rainbow tables were invented by IT expert ...

Create stronger, more secure passwords: We are nagged to do it all the time, but few of us actually make the effort. Meanwhile, passwords continue to be stolen, leaked, and cracked on a regular basis.

With LinkedIn, eHarmony and Last.fm all investigating password leaks, the author of a popular password hash algorithm is urging websites that have more than 50,000 passwords to stop using his program, ...