Comptia security+ study guide pdf download 2018

Accomplished authors and security experts Mike Chapple and David Seidl walk you through the fundamentals of crucial security topics, including the five domains covered by the SY Exam: Attacks, Threats, and Vulnerabilities Architecture and Design Implementation Operations and Incident Response Governance, Risk, and Compliance The study guide comes with the Sybex online, interactive learning environment that includes a pre-assessment test, hundreds of review questions, practice exams, flashcards, and a glossary of key terms.

The book is written in a practical and straightforward manner, ensuring you can easily learn and retain the material. Accomplished author and security expert James Michael Stewart covers each domain in a straightforward and practical way, ensuring that you grasp and understand the objectives as quickly as possible. Like the test, the guide goes beyond knowledge application and is designed to ensure that security personnel anticipate security risks and guard against them. Mike covers all exam objectives in small, digestible modules that allow you to focus on individual skills as you move through a broad and complex set of skills and concepts.

The book will contain clear and concise information on crucial security topics. It will include practical examples and insights drawn from real-world experience. I don't rely on those solely either, but I do use them to verify I'm ready to go drop a few hundred bucks on a certification. TestOut has no affiliation with these companies and the products and services advertised herein are not endorsed by any of them. Learn about testout labsim terms with free interactive flashcards.

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Students who take and pass the exam can download a digital certificate. Testout Certification Practice Exam Answers. Which of the following is the MOST likely reason for the rejected emails? The wrong domain name is in the SPF record. The primary and secondary email server IP addresses are out of sequence. SPF version 1 does not support third-party providers. An incorrect IP version is being used. NEW QUESTION An organization has implemented a two-step verification process to protect user access to data that 6 stored in the could Each employee now uses an email address of mobile number a code to access the data.

Which of the following authentication methods did the organization implement? Token key. Static code. Push notification. The tool created an OVAL. Results document as output. Which of the following would enable the engineer to interpret the results in a human readable form? Choose two. Text editor. These resources include:. DDoS attacks vary greatly in length and sophistication. A DDoS attack can take place over a long period of time or be quite brief:. Despite being very quick, burst attacks can actually be extremely damaging.

With the advent of internet of things IoT devices and increasingly powerful computing devices, it is possible to generate more volumetric traffic than ever before. As a result, attackers can create higher volumes of traffic in a very short period of time.

A burst DDoS attack is often advantageous for the attacker because it is more difficult to trace. Botnets, which are vast networks of computers, can be used to wage DDoS attacks. They are usually composed of compromised computers e. Threat actors can simply manipulate the tens of thousands of network devices on the internet that are either misconfigured or are behaving as designed.

One of the realities of cybersecurity is that most attackers are moderately talented individuals who have somehow figured out how to manipulate a certain network condition or situation. Even though there is often discussion about advanced persistent threats APT and increasingly sophisticated hackers, the reality is often far more mundane. For example, most DDoS attackers simply find a particular protocol.

The Memcached service is a legitimate service frequently used to help speed up web applications. Attackers have often exploited Memcached implementations that are not properly secured, and even those that are operating properly. Attackers have also discovered that they can compromise IoT devices, such as webcams or baby monitors. But today, attackers have more help. Recent advancements have given rise to AI and connective capabilities that have unprecedented potential.

Like legitimate systems administrators, attackers now have voice recognition, machine learning and a digital roadmap that can allow them to manipulate integrated devices in your home or office, such as smart thermostats, appliances and home security systems. DDoS traffic comes in quite a few different varieties. In the case of a botnet-based attack, the DDoS threat actor is using a botnet to help coordinate the attack.

Understanding the types of traffic will help to select proactive measures for identification and mitigation. Click on the red plus signs to learn more about each type of DDoS traffic. A botnet administrator, or a wrangler, uses a central server or network of servers to control the thousands of members of the botnet. The most effective DDoS attacks are highly coordinated.

The best analogy for a coordinated attack involves comparing a DDoS botnet to a colony of fire ants. When a fire ant colony decides to strike, they first take a position and ready themselves for the attack. Acting under a single directive and without obvious warning, they wait for the signal and then act simultaneously. This traffic passing between a botnet member and its controller often has specific, unique patterns and behaviors. As a result, there is a small chance for security analysts to identify this traffic and treat it as a signature to disable a DDoS attack.

Atypical traffic involves using strategies such as reflection and amplification, usually at the same time. Modern DDoS attacks combine different attack strategies, including the use of Layer 7, volumetric and even seemingly unrelated methods, such as ransomware and malware.

In fact, these three attack types have become something of a trifecta and are becoming more prominent in the DDoS attack world.

DDoS attacks take on many forms and are always evolving to include various attack strategies. As an IT pro, knowing how to approach a DDoS attack is of vital importance as most organizations have to manage an attack of one variety or another over time. There have been an exceedingly large number of distributed denial of service attacks over the years. Click on the red plus signs to learn more about each of these major DDoS attacks. The DDoS attacks on Estonia occurred in response to the movement of a politically divisive monument to a military cemetery.

To Russian-speaking Estonians, the statue represented Nazi liberation, but to ethnic Estonians, the monument symbolized Soviet oppression. Russian Estonians began rioting, and many were publicly outraged. The week of April 27, a barrage of cyberattacks broke out, most of them of the DDoS variety.

Individuals used ping floods and botnets to spam and take down many financial institutions, government departments and media outlets. This attack is still regarded as one of the most sophisticated to date and is a solid example of a state-run DDoS attack. The attack appeared to be aimed at the Georgian president, taking down several government websites. It was later believed that these attacks were an attempt to diminish the efforts to communicate with Georgia sympathizers.

Not long thereafter, Georgia fell victim to Russian invasion. This attack is considered to be the textbook example of a coordinated cyberattack with physical warfare. It is studied around the world by cybersecurity professionals and military groups to understand how digital attacks can work in tandem with physical efforts.

The attack was prompted when a group named Cyberbunk was added to a blacklist by Spamhaus. In retaliation, the group targeted the anti-spam organization that was curtailing their current spamming efforts with a DDoS attack that eventually grew to a data stream of Gbps. The attack was so compromising that it even took down Cloudflare, an internet security company designed to combat these attacks, for a brief time. The DDoS attacks that occurred during Occupy Central were an effort to cripple the pro-democracy protests that were occurring in Hong Kong in Two independent news sites, Apple Daily and PopVote, were known for releasing content in support of the pro-democracy groups.

Much larger than the Spamhaus attack, Occupy Central pushed data streams of Gbps. This attack was able to circumvent detection by disguising junk packets as legitimate traffic. Many speculate the attack was launched by the Chinese government in an effort to squash pro-democracy sentiments. This attack affected stock prices and was a wake-up call to the vulnerabilities in IoT devices. The Mirai botnet comprised a collection of IoT-connected devices.

The botnet was assembled by exploiting the default login credential on the IoT consumer devices which were never changed by end users. The attack impacted the services of 69 companies, including powerhouses such and Amazon, CNN and Visa.

One of the largest DDoS attacks in history was launched against GitHub, viewed by many as the most prominent developer platform. At the time, this was the largest DDoS attack in history. However, due to precautionary measures, the platform was only taken offline for a matter of minutes. The organization quickly alerted support, and traffic was routed through scrubbing centers to limit the damage.

GitHub was back up and running within 10 minutes. AWS is well known for being a leading provider of cloud computing services. The company, a subsidiary of the retail giant Amazon, sustained an impressive DDoS attack that kept their response teams busy for several days.