The immense amount of cash flowing through casinos naturally attracts the world's most ambitious criminals.

These legendary stories read like Hollywood movie scripts, involving insider knowledge and incredible audacity.

The Legend of Bill Brennan

One of the most famous unsolved casino heists occurred in 1992 at the legendary Stardust Casino.

Brennan simply packed half a million dollars into a bag and walked out the front door.

• Occurred at the Stardust Casino in 1992
• The thief was a trusted employee
• He disappeared without a single trace

The Baccarat Card Sorting Scandal

While not a traditional robbery at gunpoint, Phil Ivey's baccarat session cost casinos millions.

Ivey and his partner won nearly $20 million from casinos in London and Atlantic City.

Hacking the Casino Surveillance System

In 2013, the Crown Casino in Melbourne was the victim of an incredibly high-tech heist.

Information was then secretly relayed to the player at the table via a wireless earpiece.

While physical heists are incredibly rare today, cyber-attacks remain a modern threat to gambling operators.