If you want to play in any online casino you should register first and enter your login and password that you will use to enter your account. If some other person gets this information he can use it to achieve his own goals. In other words, he will be able to play instead of you and even withdraw funds. Casinos always work over the perfection of security system and guarantee that your money will never get to other people. However, the users behave rather carelessly and reduce all efforts of software developers to nothing. This careless attitude is revealed first of all when you use computers other people have access to.
Any computer that is not controlled by you only, which is used by other people, is not reliable when you play in the online casino.
This is the worst variant you can imagine. It is like game in the internet-café. In spite of it, many behave exactly this way. You can hardly consider use of computers in the office or studying institutions a secure way too. Do not play in the online casino on the notebook if you give it to others. These precaution measures seem to be too strict, however think about what can happen if you neglect them. Your personal information can be stolen with spyware. Others can even see what you type if you do it in public. Special programs can be installed in Internet-café that let see what websites are visited by you and even personal information can be copied. Moreover the administrators can follow that the users do. So called keyboard loggers let them know all actions performed by users. Exhausting information can be received this way. Many administrators install this software just out of curiosity, but who can guarantee that they will not be tempted to use your account in the casino. Eventually, any person can have access to this information.
Therefore you should establish the rule to play online casino only from computers, other people do not have access to. Never break this rule. But even if you use the personal computer only, you should install programs from the trusted manufacturers that provide reliable protection of your personal data.