Mainly windows, because it has many security vulnerabilities, there are also only a few people who can fix security bugs and therefore it can take months to fix something. Also if you are paranoid enough use Linux (Personally I do).
The best OS for hackers is Backtrack Linux 5.
No computer is immune from computer viruses. However, the Apple Operating systems OSX is targeted less by hackers than windows and linux computers. However, good antivirus software should be installed and updated regularly and the operating system should be updated too.
Historically speaking, any computer that is connected to a public network and running a Microsoft Windows operating system is more vulnerable to attack than any other operating system. Particularly, out of date, and unpatched versions of windows are worse off than otherwise. This is due to several factors - Windows Operating Systems usually have more security vulnerabilities than other operating systems do, but mostly they are more vulnerable because of the popularity of windows. There are many more people using Windows than other Operating Systems, so there is more incentive for hackers to target it.
The other name for crackers or malicious hackers who infiltrate secure systems is "black hat hackers." These individuals use their skills for nefarious purposes, such as stealing sensitive information or disrupting systems.
Virtual operating system
CRACKERS AND HACKERS A hacker is a person intensely interested in the arcane and recondite workings of any computer operating system. Hackers are most often programmers. As such, hackers obtain advanced knowledge of operating systems and programming languages. They might discover holes within systems and the reasons for such holes. Hackers constantly seek further knowledge, freely share what they have discovered, and never intentionally damage data. A cracker is one who breaks into or otherwise violates the system integrity of remote machines with malicious intent. Having gained unauthorized access, crackers destroy vital data, deny legitimate users service, or cause problems for their targets. Crackers can easily be identified because their actions are malicious
When you network operating systems you will have the benefit of both operating systems. You have to ensure both systems are compatible before networking them.
Operating systems are not in applications. Applications are installed on Operating Systems.
what are the disadvantages of operating systems effects of information technology
several types of operating systems are there.
Single-user multitask operating systems are also known as network operating systems
Anything. Expect DOS, old versions of Windows,Almost all Linux systems. There is a problem - Most of these systems are unknown on internets. Linux systems are completely free - just download and install. But they are unaffected by hackers, backdoors, most of viruses. Hope that helps. Unknown.