Online casinos, virtual casinos and internet casinos are online versions of land based casinos. Online players benefit from the convenience of playing from anywhere in the world at any time of day or night. They generally offer greater odds, bonuses and payback percentages than traditional casinos. Larger casinos use third party accounting firms to verify online slot machine payout percentages. These percentages are listed on their websites and are generally much higher than land based casinos. The percentages are determined through random number generators and are easily increased. In table games, such as blackjack or craps, the payout percentages are identical. Deposit match bonuses are offered to make these games more attractive to the player.Online casino security is state of the art. The encryption programs used far exceeds anything currently being used in the retail sector. The software is leased from larger gaming companies like Microgaming and Playtech. The encryption and security measures are provided in the software. The online transactions are secure, the security and integrity of the office where the the software is housed is what needs to be monitored.Online casinos are categorized as either web based or download only. Web based are also known as flash casinos. Most of the major gambling houses now offer both options. Live gaming is another option that is sometimes offered. Live Gaming is done in house and does not use the same software, this has raised questions about their security.Web Based, Browser Based or Flash casinos are websites that allow players to play online casino games without downloading software to their computer. Plugins such as Macromedia Flash, Macromedia Shockwave or Java are generally required to use this software. These websites also tend to use a lot of bandwidth as the graphics can be very advanced. There are still others that will allow you to play without downloading software or using a plugin. The allure of these casinos is that you can play on public computers, at work or on any computer where others will see where you have been. The problem is that theses casinos offer fewer games and run slower than the full download version.Some online casinos need to have their software downloaded in order to play. Once the software is downloaded players can wager on casino games. The software allows the player to connect to the online casinos servers. Download based online casinos run faster than flash casinos because all of the graphics and sound programs are located within the software client, rather than downloading them. These casinos tend to have more games available and offer more tournaments. The flash versions of these games would run too slowly. There is always a fear of downloading a program onto a computer. If you look into reputable online casinos this will not be a problem. Remember that online casinos only make money when they have players. It is their best interest to be as trustworthy as possible. They will make their money through the shear odds of the games.