'123456' is the most common password used by people on the Internet.

Obscenities, names of fast cars and even ncc1701 -- the ship number for Star Trek's Starship Enterprise -- have made it to the list of top 500 worst passwords of all time.

Compiled by Whatsmypass.com, the list features passwords most commonly used by Internet users.

And topping the list of the most common password is 123456, followed by 'password' in second place.

Other popular password choices were first names, repeated letters and numbers, pop-culture references.

Even batman, bond007 and Coca-Cola made it to the list, reports the Courier Mail.

The website said that almost one out of nine people use at least one of the passwords mentioned on the list, and one out of every 50 people use one from the top 20.

In fact, a study commissioned by digital communications agency @www found that an average adult had as many as 15 passwords to remember.

But 61 per cent of people used the same passwords for as many different accounts as possible in order to make life easier.