Read e-book online Computer Security Literacy: Staying Safe in a Digital World PDF

By Douglas Jacobson, Joseph Idziorek

Computing device clients have an important effect at the safeguard in their laptop and private info end result of the activities they practice (or don't perform). aiding the common consumer of pcs, or extra commonly info expertise, make sound safeguard judgements, machine defense Literacy: Staying secure in a electronic international makes a speciality of useful defense issues that clients tend to come upon on a standard basis.

Written for nontechnical readers, the booklet offers context to regimen computing initiatives in order that readers larger comprehend the functionality and impression of safety in way of life. The authors supply useful laptop safeguard wisdom on a number of themes, together with social engineering, electronic mail, and on-line purchasing, and current most sensible practices referring to passwords, instant networks, and suspicious emails. in addition they clarify how defense mechanisms, comparable to antivirus software program and firewalls, shield opposed to the threats of hackers and malware.

While details know-how has develop into interwoven into nearly each point of way of life, many computing device clients do not need useful machine protection wisdom. This hands-on, in-depth consultant is helping someone attracted to info expertise to raised comprehend the sensible facets of desktop defense and effectively navigate the hazards of the electronic world.

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The OS processes the user request by accessing the storage device containing the application (typically the hard drive). The OS then loads the application into memory, and it begins executing (Step 2). Once the application is fully loaded, the application will be presented to the user on the monitor, in which case the user is then able to command and interact with the application (Step 3). One key function of an OS is to make it appear to the user that multiple applications are all running at the same time, even though a single CPU can actually be executing only one application at any instant.

A helpful way to understand these relationships is by considering examples in which one of the three factors (threat, vulnerability, and impact) is absent. The first example is one in which a system is not vulnerable to a specific attack. , Mac) running the OS X operating system is being attacked by attack code designed to exploit a vulnerability for the Windows operating system. In this case, because the considered attack code is ineffective against a Mac, the risk for the Mac computer is zero even though the attack may have a high impact if successful, and the threat of attack for the system is high.

For the attacker, it all boils down to simple economics. The system that costs the least to attack and has the most potential to produce a reward is the prime target. A problem associated with the myth of a Mac’s relatively lower vulnerability to attack is that people often believe they are safer using a Mac than they are a Windows-based computer. , antivirus software) to protect themselves and their data. Malware does indeed exist for Mac computers, and its presence is expected to grow. The Flashback Trojan malware, which infected an estimated 600,000 Mac computers in 2012, is a prime example of the malware threat that Mac users face.

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