barcodelib c# 5: Reviewing Logs and Monitoring in Objective-C

Maker ECC200 in Objective-C 5: Reviewing Logs and Monitoring

CHAPTER 5: Reviewing Logs and Monitoring
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the problem is, you will open a ticket with AppleCare immediately, down the system, make a check-summed clone of it, install a new hard drive, install OS X on the new hard drive, and migrate data. Home incident response plans are typically easy to compile and really just offer you a task list of what to do in the case of a security incident. Office incident response plans are typically more comprehensive, and need to go through committees or IT groups for approval, especially because they could contain some mission-critical systems with guaranteed uptimes that need to be maintained. We cannot stress enough the importance of implementing an incident response system. Intellectual property theft is on the rise. Companies have lost billions of dollars in revenue over the years because of stolen intellectual property. When it occurs, it is usually not a sudden occurrence; it happens over time. More often than not, the logs were giving clues to breaches in the security framework long before the actual theft occurred. Some companies have been put out of business because of security breaches. An incident response plan coupled with a tested, reliable backup plan spares everyone the heartache and devastation of stolen intellectual property and financial information.
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Summary
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In this chapter we looked at the various logs and logging facilities built into Mac OS X. These logs provide insight into what is happening on the inside of your computer. They can be used to guide you in troubleshooting efforts and to act as an early warning sign, even when you don t have a symptom you are looking to troubleshoot. The logs in Mac OS X can also be used to obtain critical security information. Using the steps we laid out, you can centralize logs, or run scripts to aggregate information routinely. Those aggregated logs can enable you to see what is going on throughout an enterprise with very little work from savvy systems administrators. Now that we have looked at logs, we ll move on to one of the aspects of Mac OS X that can place information in those logs, applications. In 6 we will jump into securing applications, with a focus on leveraging Apple s sandbox facility and rich application signing framework.
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CHAPTER 5: Reviewing Logs and Monitoring
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Part
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Securing the Ecosystem
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Application Signing and Sandbox
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This chapter discusses two relatively new security features found in OS X: application signing and sandbox. These technologies were both introduced with Mac OS 10.5 and provide new facilities that help to improve the security outlook of the platform. Incidentally, both of these technologies are also heavily utilized by Apple s newest platform that you ve undoubtedly heard of: the iPhone OS.
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Application Signing
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Application signing is a technology that Apple has implemented in OS X that seeks to address the issue of application identity and integrity. This technology provides protection to the operating system so that it can both uniquely identify an application and also determine whether the contents of the application have been modified. This includes integrity checks to both the application payload (the main function of the application) as well as the metadata about the application: its bundle identifier, version information, and the like. Once signed, if any of this information changes for an application, the OS will be able to detect that such a change has been made, and act accordingly. From a security perspective, signing an application addresses two areas of security: authentication and integrity. By implementing these protections, Apple has a very good system to allow developers to provide a means for end users to verify the integrity of their applications, and thereby provide a method for non-repudiation. That is, when a vendor signs an application, an end user can confidently operate with knowledge that the code has not been otherwise altered by a party other than the original vendor. The concept of non-repudiation predates that of any computer system by a long shot, and seeks to provide a means for one entity to uniquely validate a piece of information. In fact, non-repudiation has been around for centuries in one form or another. Perhaps the earliest form was the use of scarab seals, which date back as far as the Egyptian
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