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No, you are not paranoid. They are out to read your email. In this engaging and oddly reassuring text, practitioner Lucas describes Pretty Good Privacy (PGP) and Open Source GPG for moderately skilled computer geeks who are unfamiliar with public-key cryptography but want a cheap solution to security woes. He covers cryptography, installing OPENPGP
Mac OS X Maximum Security by John Ray,William Ray Pdf
While Mac OS X is becoming more and more stable with each release, its UNIX/BSD underpinnings have security implications that ordinary Mac users have never before been faced with. Mac OS X can be used as both a powerful Internet server, or, in the wrong hands, a very powerful attack launch point. Yet most Mac OS X books are generally quite simplistic -- with the exception of the author's "Mac OS X Unleashed," the first book to address OS X's underlying BSD subsystem. "Maximum Mac OS X Security" takes a similar UNIX-oriented approach, going into significantly greater depth on OS X security topics: Setup basics, including Airport and network topology security. User administration and resource management with NetInfo. Types of attacks, how attacks work, and how to stop them. Network service security, such as e-mail, Web, and file sharing. Intrusion prevention and detection, and hands-on detection tools.
Take Control of Apple Mail, 6th Edition by Joe Kissell Pdf
Master Mail in macOS, iOS, and iPadOS! Version 6.1, updated January 18, 2024 Use Apple Mail more effectively! Email expert Joe Kissell explains what's new with Mail for macOS, iOS, and iPadOS, and how to best set up your Gmail, iCloud, IMAP, and Exchange accounts. He then shows you how to take Mail to the next level with plugins and automation, manage your incoming email, customize Mail, and solve common problems. Take Control of Apple Mail is your complete guide to Apple's Mail app. In this book, Joe explains core concepts like special IMAP mailboxes and email archiving, reveals Mail's hidden interface elements and gestures, and helps with common tasks like addressing and adding attachments. He also offers tips on customizing Mail, including a nifty chapter on how simple plugins and special automation can dramatically improve the way you use Mail. Joe also covers finding that message in the haystack with Mail's natural-language search, improving the messages you send, how digital signatures and encryption work in Mail, and—perhaps most important—an award-winning strategy for avoiding email overload. You’ll quickly find the information that’s most important to you, including: • Key changes in Mail for Sonoma, Ventura, iOS 17/iPadOS 17, and iOS 16/iPadOS 16, such as automated handling of two-factor verification codes, link tracking protection, discontinuation of plugin support in favor of extensions, unsending messages, scheduling messages to send later, following up on messages awaiting replies, reminding yourself about important messages in your Inbox, getting notifications for missing attachments and recipients, and more • How to take advantage of the new Mail privacy features Mail Privacy Protection and Hide My Email • Getting through your email faster with gestures • Using advanced search techniques to find filed messages • Using third-party add-ons to significantly enhance how you use Mail • The whys and hows of sending attachments • Using markup features to embellish, and even sign, outgoing attachments • Defeating spam with the Junk Mail filter—and what to do if you need more firepower • Understanding special mailboxes like Sent, Drafts, and Junk • Using notifications to stay apprised of incoming messages • Taking charge of email organization with rules and other measures • Backing up and restoring email • Importing email from other apps, older versions of Mail, or another Mac • Deciding whether you should encrypt your email, along with detailed, real-world steps for signing and encrypting messages • Taking Mail to the next level with AppleScript and Automator • Key skills for using Mail in iOS and iPadOS, such as working with incoming and outgoing messages, using attachments, and configuring accounts • Fixing problems: receiving, sending, logging in, bad mailboxes, and more Although this book primarily covers Mail in Sonoma, Ventura, Monterey, Big Sur, Catalina, Mojave, iOS 17/iPadOS 17, and iOS 16/iPadOS 16, the majority of it is also applicable to earlier versions.
Linux Security Cookbook by Daniel J. Barrett,Richard E. Silverman,Robert G. Byrnes Pdf
Computer security is an ongoing process, a relentless contest between system administrators and intruders. A good administrator needs to stay one step ahead of any adversaries, which often involves a continuing process of education. If you're grounded in the basics of security, however, you won't necessarily want a complete treatise on the subject each time you pick up a book. Sometimes you want to get straight to the point. That's exactly what the new Linux Security Cookbook does. Rather than provide a total security solution for Linux computers, the authors present a series of easy-to-follow recipes--short, focused pieces of code that administrators can use to improve security and perform common tasks securely.The Linux Security Cookbook includes real solutions to a wide range of targeted problems, such as sending encrypted email within Emacs, restricting access to network services at particular times of day, firewalling a webserver, preventing IP spoofing, setting up key-based SSH authentication, and much more. With over 150 ready-to-use scripts and configuration files, this unique book helps administrators secure their systems without having to look up specific syntax. The book begins with recipes devised to establish a secure system, then moves on to secure day-to-day practices, and concludes with techniques to help your system stay secure.Some of the "recipes" you'll find in this book are: Controlling access to your system from firewalls down to individual services, using iptables, ipchains, xinetd, inetd, and more Monitoring your network with tcpdump, dsniff, netstat, and other tools Protecting network connections with Secure Shell (SSH) and stunnel Safeguarding email sessions with Secure Sockets Layer (SSL) Encrypting files and email messages with GnuPG Probing your own security with password crackers, nmap, and handy scripts This cookbook's proven techniques are derived from hard-won experience. Whether you're responsible for security on a home Linux system or for a large corporation, or somewhere in between, you'll find valuable, to-the-point, practical recipes for dealing with everyday security issues. This book is a system saver.
This book explains compactly, without theoretical superstructure and with as little mathematical formalism as possible, the essential concepts in the encryption of messages and data worthy of protection. The focus is on the description of the historically and practically important cipher, signature and authentication methods. Both symmetric encryption and public-key ciphers are discussed. In each case, the strategies used to attack and attempt to "crack" encryption are also discussed. Special emphasis is placed on the practical use of ciphers, especially in the everyday environment. The book is suitable for working groups at STEM schools and STEM teacher training, for introductory courses at universities as well as for interested students and adults.
Advances in Cryptology – EUROCRYPT 2004 by Christian Cachin,Jan Camenisch Pdf
These are the proceedings of Eurocrypt 2004, the 23rd Annual Eurocrypt C- ference. The conference was organized by members of the IBM Zurich Research Laboratory in cooperation with IACR, the International Association for Cr- tologic Research. Theconferencereceivedarecordnumberof206submissions,outofwhichthe program committee selected 36 for presentation at the conference (three papers were withdrawn by the authors shortly after submission). These proceedings contain revised versions of the accepted papers. These revisions have not been checked for correctness, and the authors bear full responsibility for the contents of their papers. The conference program also featured two invited talks. The ?rst one was the 2004 IACR Distinguished Lecture given by Whit?eld Di?e. The second invited talk was by Ivan Damg? ard who presented “Paradigms for Multiparty Computation. ” The traditional rump session with short informal talks on recent results was chaired by Arjen Lenstra. The reviewing process was a challenging task, and many good submissions had to be rejected. Each paper was reviewed independently by at least three members of the program committee, and papers co-authored by a member of the program committee were reviewed by at least six (other) members. The individual reviewing phase was followed by profound and sometimes lively d- cussions about the papers, which contributed a lot to the quality of the ?nal selection. Extensive comments were sent to the authors in most cases.
The comprehensive A-to-Z guide on network security, fully revised and updated Network security is constantly evolving, and this comprehensive guide has been thoroughly updated to cover the newest developments. If you are responsible for network security, this is the reference you need at your side. Covering new techniques, technology, and methods for approaching security, it also examines new trends and best practices being used by many organizations. The revised Network Security Bible complements the Cisco Academy course instruction in networking security. Covers all core areas of network security and how they interrelate Fully revised to address new techniques, technology, and methods for securing an enterprise worldwide Examines new trends and best practices in use by organizations to secure their enterprises Features additional chapters on areas related to data protection/correlation and forensics Includes cutting-edge topics such as integrated cybersecurity and sections on Security Landscape, with chapters on validating security, data protection, forensics, and attacks and threats If you need to get up to date or stay current on network security, Network Security Bible, 2nd Edition covers everything you need to know.
Essential System Administration by Æleen Frisch Pdf
Essential System Administration,3rd Edition is the definitive guide for Unix system administration, covering all the fundamental and essential tasks required to run such divergent Unix systems as AIX, FreeBSD, HP-UX, Linux, Solaris, Tru64 and more. Essential System Administration provides a clear, concise, practical guide to the real-world issues that anyone responsible for a Unix system faces daily.The new edition of this indispensable reference has been fully updated for all the latest operating systems. Even more importantly, it has been extensively revised and expanded to consider the current system administrative topics that administrators need most. Essential System Administration,3rd Edition covers: DHCP, USB devices, the latest automation tools, SNMP and network management, LDAP, PAM, and recent security tools and techniques.Essential System Administration is comprehensive. But what has made this book the guide system administrators turn to over and over again is not just the sheer volume of valuable information it provides, but the clear, useful way the information is presented. It discusses the underlying higher-level concepts, but it also provides the details of the procedures needed to carry them out. It is not organized around the features of the Unix operating system, but around the various facets of a system administrator's job. It describes all the usual administrative tools that Unix provides, but it also shows how to use them intelligently and efficiently.Whether you use a standalone Unix system, routinely provide administrative support for a larger shared system, or just want an understanding of basic administrative functions, Essential System Administration is for you. This comprehensive and invaluable book combines the author's years of practical experience with technical expertise to help you manage Unix systems as productively and painlessly as possible.
A Practical Guide to Red Hat Linux 8 by Mark G. Sobell Pdf
Based on his successful "A Practical Guide to Linux, " Sobell is known for his clear, concise, and highly organized writing style. This new book combines the strengths of a tutorial and those of a reference to give readers the knowledge and skills to master Red Hat Linux.
A collection of problems, solutions, and practical examples for PHP programmers. The book contains a unique and extensive collection of best practices for everyday PHP programming dilemmas. For every problem addressed in the book, there's a worked-out solution or "recipe" -- a short, focused piece of code you can insert directly into your application. However, this book offers more than cut-and-paste code. You also get explanations of how and why the code works, so you can learn to adapt the problem-solving techniques to similar situations. The recipes in the PHP Cookbook range from simple tasks, such as sending a database query and fetching URLs, to entire programs that demonstrate complex tasks, such as printing HTML tables and generating bar charts. This book contains an impressive collection of useful code for PHP programmers, from novices to advanced practitioners. Instead of poking around mailing lists, online documentation, and other sources, you can rely on the PHP Cookbook to provide quick solutions to common problems, so you can spend your time on those out-of-the-ordinary problems specific to your application.
Cisco CyberOps Associate CBROPS 200-201 Official Cert Guide by Omar Santos Pdf
Trust the best-selling Official Cert Guide series from Cisco Press to help you learn, prepare, and practice for exam success. They are built with the objective of providing assessment, review, and practice to help ensure you are fully prepared for your certification exam. Master Cisco CyberOps Associate CBROPS 200-201 exam topics Assess your knowledge with chapter-opening quizzes Review key concepts with exam preparation tasks This is the eBook edition of the CiscoCyberOps Associate CBROPS 200-201 Official Cert Guide. This eBook does not include access to the companion website with practice exam that comes with the print edition. Cisco CyberOps Associate CBROPS 200-201 Official Cert Guide presents you with an organized test-preparation routine through the use of proven series elements and techniques. “Do I Know This Already?” quizzes open each chapter and enable you to decide how much time you need to spend on each section. Exam topic lists make referencing easy. Chapter-ending Exam Preparation Tasks help you drill on key concepts you must know thoroughly. Cisco CyberOps Associate CBROPS 200-201 Official Cert Guide focuses specifically on the Cisco CBROPS exam objectives. Leading Cisco technology expert Omar Santos shares preparation hints and test-taking tips, helping you identify areas of weakness and improve both your conceptual knowledge and hands-on skills. Material is presented in a concise manner, focusing on increasing your understanding and retention of exam topics. Well regarded for its level of detail, assessment features, comprehensive design scenarios, and challenging review questions and exercises, this official study guide helps you master the concepts and techniques that will enable you to succeed on the exam the first time. The official study guide helps you master all the topics on the Cisco CyberOps Associate CBROPS 200-201 exam, including • Security concepts • Security monitoring • Host-based analysis • Network intrusion analysis • Security policies and procedures
Seven Deadliest Unified Communications Attacks by Dan York Pdf
Seven Deadliest Unified Communications Attacks provides a comprehensive coverage of the seven most dangerous hacks and exploits specific to Unified Communications (UC) and lays out the anatomy of these attacks including how to make your system more secure. You will discover the best ways to defend against these vicious hacks with step-by-step instruction and learn techniques to make your computer and network impenetrable. The book describes the intersection of the various communication technologies that make up UC, including Voice over IP (VoIP), instant message (IM), and other collaboration technologies. There are seven chapters that focus on the following: attacks against the UC ecosystem and UC endpoints; eavesdropping and modification attacks; control channel attacks; attacks on Session Initiation Protocol (SIP) trunks and public switched telephone network (PSTN) interconnection; attacks on identity; and attacks against distributed systems. Each chapter begins with an introduction to the threat along with some examples of the problem. This is followed by discussions of the anatomy, dangers, and future outlook of the threat as well as specific strategies on how to defend systems against the threat. The discussions of each threat are also organized around the themes of confidentiality, integrity, and availability. This book will be of interest to information security professionals of all levels as well as recreational hackers. Knowledge is power, find out about the most dominant attacks currently waging war on computers and networks globally Discover the best ways to defend against these vicious attacks; step-by-step instruction shows you how Institute countermeasures, don’t be caught defenseless again, and learn techniques to make your computer and network impenetrable
Profound Linux For Administrators by Önder Teker Pdf
This book contains topics about Linux for developers as well as advanced users or administrators. The shells & commands together with expansion & substitutionare explained in detail. Process communication with pipes & redirection are explained. Scripting is covered for both developers and system experts at both fundamental and advanced level. Topics such as files, array, strings, declarations are added. Initialization scripts & crontab are explained. MySQL/MariaDB, PostgreSQL, MongoDB databases; Apache, NGINX, Tomcat web servers; C/C++, Java, JavaScript, Python development kits are included.
Enterprise Mac Security: Mac OS X Snow Leopard by Charles Edge,William Barker,Beau Hunter,Gene Sullivan,Ken Barker Pdf
A common misconception in the Mac community is that Mac’s operating system is more secure than others. While this might be true in certain cases, security on the Mac is still a crucial issue. When sharing is enabled or remote control applications are installed, Mac OS X faces a variety of security threats. Enterprise Mac Security: Mac OS X Snow Leopard is a definitive, expert-driven update of the popular, slash-dotted first edition and was written in part as a companion to the SANS Institute course for Mac OS X. It contains detailed Mac OS X security information, and walkthroughs on securing systems, including the new Snow Leopard operating system. Using the SANS Institute course as a sister, this book caters to both the beginning home user and the seasoned security professional not accustomed to the Mac, establishing best practices for Mac OS X for a wide audience. The authors of this book are seasoned Mac and security professionals, having built many of the largest network infrastructures for Apple and spoken at both DEFCON and Black Hat on OS X security.