Nowadays malware plays an important role. Malware programs are applications that have been developed in order to include an undesirable functionality to the user. Substantially it is a general pattern of a part of malware which goes in to an information system in order to cause damage to it or to other systems, or even to prevent the actions of the users. There are various attack methods which are changing and becoming difficult to defeat malware attacks. However these have serious impacts and various consequences will occur. Users of social networks, employees in organizations or in government institutions are facing various malware attacks. That happens because attackers want to gain the full control of information systems and after that they will gather personal information from the users in order to have financial benefits. There are various challenges that users will see in the future in order to face malware attacks and that is why preventive mechanisms will need to be occurred. Companies as well as security administrators of governmental infrastructures have to spend a lot of money for protecting their information systems. Otherwise they will not work properly because financial damages are huge and users will not trust the services that companies offer to them as well as attackers will finally steal personal information from everyone.