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Figure 1934
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Figure 1935
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Audit object access with the Local Security Settings dialog box open in the background
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With Windows Vista, Microsoft offers great security features, including tight control over user accounts and actions, a centralized security dialog, and parental controls over content And these just scratch the surface!
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Windows XP made it too easy and in fact almost necessary to make your primary account on a computer an Administrator account Because Limited Users can t do common tasks such as run certain programs, install applications, update applications, update Windows, and so on, most users simply created an Administrator-level account and logged in Because such accounts have full control over the computer, malware that slipped in with that account could do a lot more harm Microsoft addressed this problem with the User Account Control (UAC) This feature enables standard users to do common tasks and provides a permissions dialog (Figure 1936) when standard users and administrators do certain things that could potentially harm the computer (such as attempt to install a program) Vista user accounts now function much more like user accounts in Linux and Mac OS X
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19: Computer Security
Security Center
Microsoft has buffed up the Windows Security Center (WSC) for Windows Vista to provide a one-stop shop for users to get information about critical security issues (Figure 1937) First introduced with Windows XP SP2, WSC provides information about whether or not the Windows Firewall, Automatic Updates, and an antivirus program are turned on That s just a start; the WSC in Vista goes beyond to monitor other malware solutions, such as the spyware- and adware-crushing Windows Defender The WSC shows Internet security settings and the status of UAC It even shows third-party security solutions installed, monitors whether they re engaged, and provides an Update Now button so you can download the latest updates to their signatures
Parental Controls
With Parental Controls, you can monitor and limit the activities of any Standard User in Windows Vista, a feature that gives parents and managers an excellent level of control over the content their children and employees can access (Figure 1938) Activity Reporting logs applications run or attempted to run, Web sites visited or attempted to visit, any kind of files downloaded, and more You can block various Web sites by type or specific URL, or you can allow only certain Web sites, a far more powerful option
Figure 1937
Windows Security Center in Vista
Mike Meyers CompTIA A+ Guide: Essentials (Exam 220-601)
Figure 1938
Parental Controls
Parental Controls enable you to limit the time that Standard Users can spend logged in You can specify acceptable and unacceptable times of day when Standard Users can log in You can restrict access to types of games and specific applications For example, if you like playing rather gruesome games filled with monsters and blood that you don t want your kids to play, you can simply block any games with certain ESRB ratings, such as T for teen
Other Security Features
Vista offers many other security features that you may or may not encounter, such as improved hard drive encryption In a corporate environment, you might run into Vista machines that completely block USB thumb drives Underneath all these security features runs an OS that protects essential system files with far greater robustness than Windows XP or Windows 2000
19: Computer Security
19 Review
Summary
After reading this chapter and completing the exercises, you should understand the following about computer security migrate user and data information in a secure environment, remove data from hard drives that will be stored or donated, and recycle old equipment rather than throwing it in the trash
Analyzing the Threat
Threats to your data come from two sources: accidents and malicious people Unauthorized access occurs when a user accesses resources in an unauthorized way Not all unauthorized access is malicious, and some is even accidental Authorized access can lead to data destruction by users who do not intend to be malicious When users have access to a file or database, they typically believe the system won t let them make any changes they are not authorized to make Windows XP Home has only two types of user accounts: administrative and limited If you need to control access, you are better off using Windows XP Professional or Windows 2000 Computers, hard drives, and power all fail As a tech, you need to plan for redundancy in these areas You also need to protect your computers against viruses distributed through the network and removable media You should back up data, make sure retired hard drives and optical discs don t have sensitive data, implement good access policies, and implement methods for tracking computer usage
To migrate data securely, supervise the file copy rather than setting it to run unattended Use a disc-wiping utility to remove remnants and make old data virtually impossible to recover Lastly, your new system is not considered secure until all passwords are in place Be environmentally responsible: recycle products such as paper and printer cartridges Some hardware, such as a computer monitor, contains toxic or hazardous materials Donate these items to an organization that will use them, or contact a company that specializes in the disposal of hazardous materials or computer components Most computer attacks are accomplished through social engineering rather than hacking Telephone scams are one of the most common social engineering tactics Dumpster driving involves physically going through an organization s trash looking for documents that might reveal user names, passwords, or other sensitive information Be sure to secure your computer equipment in a locked room to prevent physical theft Controlling access to programs, data, and other computing resources is the key to securing your system Access control includes five interlinked areas: physical security, authentication, file system, users and groups, and security policies Store computers with sensitive data in a locked room, and never walk away from your computer while logged in Log out, or lock the computer by pressing CTRL-L For software authentication, every user account should have a password to protect against unauthorized access Additionally, CMOS setup should have a password for any computer in a public place
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