tailieunhanh - essential computer security phần 7

Chống phân mảnh dữ liệu của bạn sẽ không làm cho nó an toàn hơn, nhưng nó sẽ cải thiện hiệu suất và tăng tốc độ của máy tính của bạn. Hiệu suất máy tính chậm là một trong các chỉ số chính của nhiễm phần mềm độc hại hoặc thỏa hiệp máy tính, | Keeping Things Secure Chapter 10 155 Defragmenting your data will not make it more secure but it will improve performance and increase the speed of your computer. Slow computer performance is one of the primary indicators of malware infection or computer compromise so anything that helps keep your hard drive humming along is a good thing and keeps you from being overly paranoid about security. Disk cleanup may not seem like it has anything to do with security either. However this general PC maintenance task can help protect your computer system and your personal information. Part of the process of performing Disk Cleanup on a Microsoft Windows XP system is to clean out temporary files and Internet cache files and other data remnants that might be lurking on your computer harboring sensitive or confidential information that an attacker could potentially gain access to. Disk Cleanup As you use your computer each day there are a variety of files that get used or written to your computer that can contain sensitive information. Most of these files are not meant to be kept long term. In fact they can t even be viewed or accessed like normal files. But the information is still there and a knowledgeable attacker may be able to locate it and decipher the contents to learn valuable information about you or your computer system. Files like the temporary Internet files or the temporary files within Windows are two common areas where sensitive information might be Recycle Bin may also hold data that you thought you had gotten rid of but is still hanging around on your hard drive. To clear out this data and keep your hard drive uncluttered by useless unnecessary and possibly damaging data you should perform Disk Cleanup once a week. To begin Disk Cleanup click Start All Programs Accessories System Tools Disk will see a window like the one in Figure . When you first start Disk Cleanup you must choose the drive you want to clean. 156