Discover all the security risks and exploits that can threaten iOS-based mobile devices

iOS is Apple's mobile operating system for the iPhone and iPad. With the introduction of iOS5, many security issues have come to light. This book explains and discusses them all. The award-winning author team, experts in Mac and iOS security, examines the vulnerabilities and the internals of iOS to show how attacks can be mitigated. The book explains how the operating system works, its overall security architecture, and the security risks associated with it, as well as exploits, rootkits, and other payloads developed for it. Covers iOS security architecture, vulnerability hunting, exploit writing, and how iOS jailbreaks workExplores iOS enterprise and encryption, code signing and memory protection, sandboxing, iPhone fuzzing, exploitation, ROP payloads, and baseband attacksAlso examines kernel debugging and exploitation Companion website includes source code and tools to facilitate your efforts

"iOS Hacker's Handbook" arms you with the tools needed to identify, understand, and foil iOS attacks.

Get a handle on macOS Catalina It doesn't matter if you're doing your computing on an old reliable Macbook or a brand-new Mac desktop, both rely on macOS to help you get things done. It helps to have an equally reliable guidebook to steer you through the tasks and steps that make macOS run efficiently. This fun and friendly guide provides the direction you need to easily navigate the classic and brand new features in macOS Catalina. Longtime expert Bob "Dr. Mac" LeVitus shares his years of experience to help you better understand Catalina and make it a timesaving tool in your life. Take a tour of the macOS Catalina interface Get organized and save time with macOS applications Find pro tips on speeding up your Mac Back up your data macOS Catalina For Dummies is perfect for new and inexperienced macOS users looking to grasp the fundamentals of the operating system.

Your one-stop reference for Windows Server 2019 and PowerShell know-how Windows Server 2019 & PowerShell All-in-One For Dummies offers a single reference to help you build and expand your knowledge of all things Windows Server, including the all-important PowerShell framework. Written by an information security pro and professor who trains aspiring system administrators, this book covers the broad range of topics a system administrator needs to know to run Windows Server 2019, including how to install, configure, and secure a system. This book includes coverage of: Installing & Setting Up Windows Server Configuring Windows Server 2019 Administering Windows Server 2019 Configuring Networking Managing Security Working with Windows PowerShell Installing and Administering Hyper-V Installing, Configuring, and Using Containers If you're a budding or experienced system administrator looking to build or expand your knowledge of Windows Server, this book has you covered.

* Covering all aspects of the Unix operating system and assuming no prior knowledge of Unix, this book begins with the fundamentals and works from the ground up to some of the more advanced programming techniques
* The authors provide a wealth of real-world experience with the Unix operating system, delivering actual examples while showing some of the common misconceptions and errors that new users make ? Special emphasis is placed on the Apple Mac OS X environment as well as Linux, Solaris, and migrating from Windows to Unix
* A unique conversion section of the book details specific advice and instructions for transitioning Mac OS X, Windows, and Linux users

This is the story of Microsoft(R) and how it rose to become the first monopoly of the information Age. The text is assembled from Ted Lewis's columns published in "IEEE Computer" (1994-1998), "IEEE Internet Computing," and "Scientific American," "Microsoft Rising" is a tale of great, emotion, and techno-marketing hype in one of the fastest growing, mainline industries of the world. It is an eye witness account to the changing computer industry and the story of Silicon Valley and how it works, a revisionist history of computing, circa 1990-2000. "Microsoft Rising" is ultimately about Microsoft's domination of the computer industry.

This book reports the author's personal history through the early 1990's to the end of the decade. These stories often try to predict or explain the chaos of Silicon Valley. Lewis analyzes the industry and shows how high-technology industry is constantly changing in turmoil and upheaval. He also examines the art of software development and deals with innovation and the emergence of techno-society. The book does not promise any answers, but rather concludes this short journey into the recent past with a number of provoking ideas about the future of hi-tech.

Administer UNIX on a LAN and use the newest utilities Understand the UNIX shell, go online with new browser options, and get things doneSo you're using UNIX these days? Sure, it can be a little tricky, but this friendly guide will lead you through all its peculiarities. Soon you'll understand the GNOME(t) and KDE(t) desktops, know the secret names of your Web files, Samba with the file server, and most importantly, know how to sidestep common problems. The Dummies Way Explanations in plain English "Get in, get out" information Icons and other navigational aids Tear-out cheat sheet Top ten lists A dash of humor and fun Discover how to: Find out which flavor of UNIX you have Manage UNIX on a LAN Handle files and directories for Web sites Build good directory structures Recover missing or damaged files

Prepare for Microsoft Exam MD-101-and help demonstrate your real-world mastery of skills and knowledge required to manage modern Windows 10 desktops. Designed for Windows administrators, Exam Ref focuses on the critical thinking and decision-making acumen needed for success at the Microsoft Certified Associate level. Focus on the expertise measured by these objectives: Deploy and update operating systems Manage policies and profiles Manage and protect devices Manage apps and data This Microsoft Exam Ref: Organizes its coverage by exam objectives Features strategic, what-if scenarios to challenge you Assumes you have experience deploying, configuring, securing, managing, and monitoring devices and client applications in an enterprise environment About the Exam Exam MD-101 focuses on knowledge needed to plan and implement Windows 10 with dynamic deployment or Windows Autopilot; upgrade devices to Windows 10; manage updates and device authentication; plan and implement co-management; implement conditional access and compliance policies; configure device profiles; manage user profiles; manage Windows Defender; manage Intune device enrollment and inventory; monitor devices; deploy/update applications, and implement Mobile Application Management (MAM). About Microsoft Certification Passing this exam and Exam MD-100 Windows 10 fulfills your requirements for the Microsoft 365 Certified: Modern Desktop Administrator Associate certification credential, demonstrating your ability to install Windows 10 operating systems and deploy and manage modern desktops and devices in an enterprise environment. See full details at: microsoft.com/learn

Look beyond the basics of Mac programming and development to become a Mac power user. When most people think about the Mac, they think about the amazing graphical user interface macOS is known for. However, there is a whole world to explore beneath the hood. This book approaches working directly in the terminal with fun projects and ideas to help turn you into an advanced Mac user. You'll work with Brew (HomeBrew), which gives you the ability to install applications from Linux (and Unix) that can make the terminal more useful. This is important, because a lot of applications have been stripped out of macOS or deprecated. For example, Apple's built-in PHP is usually a major release behind. You'll also customize your terminal to change everything about it, making it your own. The whole world is about personalizing. Why put up with the Apple defaults? Once you have your terminal set up and ready to rock, you'll review the basics of programming on the Mac terminal. This will allow you to get a taste of power scripting. You'll discover the power of bash, PHP, and Python. And then you'll apply those tools to web development. Tweak Your Mac Terminal takes you on a journey into a world of the terminal and its hidden applications. What You'll Learn Customize the terminal to make it perfect for your needs Develop web applications using basic coding skills in the terminal Install HomeBrew and by extension Linux and Unix applications Who This Book Is ForMac users who are already very familiar with the GUI and want to go further. This book will especially help starting IT professionals and beginning programmers.

Ready to move to the Mac? This incomparable guide helps you make a smooth transition. "New York Times" columnist and Missing Manuals creator David Pogue gets you past three challenges: transferring your stuff, assembling Mac programs so you can do what you did with Windows, and learning your way around Mac OS X.

Learning to use a Mac is not a piece of cake, but once you do, the rewards are oh-so-much better. No viruses, worms, or spyware. No questionable firewalls or inefficient permissions. Just a beautiful machine with a thoroughly reliable system. Whether you're using Windows XP or Windows 7, we've got you covered. Transfer your stuff. Moving files from a PC to a Mac is the easy part. This guide gets you through the tricky things: extracting your email, address book, calendar, Web bookmarks, buddy list, desktop pictures, and MP3 files. Re-create your software suite. Big-name programs from Microsoft, Adobe, and others are available in both Mac and Windows versions. But hundreds of other programs are Windows-only. Learn the Macintosh equivalents and how to move data to them. Learn Mac OS X Lion. Once you've moved into the Macintosh mansion, it's time to learn your way around. You're in good hands with the author of "Mac OS X: The Missing Manual," the #1 bestselling guide to Mac OS X.

The idea behind Docker is simple. Create a tiny virtual environment called a container that holds just your application and its dependencies. The Docker engine uses the host operating system to keep track of your containers. Applications running inside containers share resources, making their footprints small. They are easy to install, manage, and remove. Docker in Action, Second Edition teaches you to create, deploy, and manage applications hosted in Docker containers running on Linux. Fully updated, with four new chapters and revised best practices and examples, this second edition begins with a clear explanation of the Docker model. Then, you go hands-on with packaging applications, testing, installing, running programs securely, and deploying them across a cluster of hosts. With examples showing how Docker benefits the whole dev lifecycle, you'll discover techniques for everything from dev-and-test machines to full-scale cloud deployments.

Get the most out of your computer with our quick and easy 6-page laminated guide focusing on configuration and management of your system for you, with guidance for setting up and securing other users that may use your computer. Joan Lambert, author of multiple books on the Microsoft Office Suite, creator of many Lynda.com videos and an experienced corporate trainer used her experience and knowledge to cover the most relevant functions for users at different levels. Suggested uses: Workplace -- easy access at a moments notice to find a function you need to use; Company Training -- reduce help-desk calls and keep productivity flowing for a team or for your entire company; Family & Shared -- admin and set up secure family accounts to keep things separated while controlling time spent on the computer; Students/Teachers/Parents -- help with the learning curve in a classroom or at home; College Students -- make sure you are set-up, secure and using features that can make your life easier.

STUDY, PRACTICE, REVIEW! Take your learning to the next level with the NEW LPIC-1 Certification Kit! Includes LPIC-1 Study Guide, Fifth Edition, AND LPIC-1 Practice Tests, Second Edition About the LPIC-1 Linux Professional Institute Certification Study Guide, Fifth Edition Building on the popular Sybex Study Guide approach, this book will provide 100% coverage of the NEW LPIC-1 Exam 101-500 and Exam 102-500 objectives. The book contains clear and concise information on all Linux administration topic, and includes practical examples and insights drawn from real-world experience. System Architecture Linux Installation and Package Management GNU and Unix Commands Devices, Linux Filesystems, Filesystem Hierarchy Standard Shells and Shell Scripting User Interfaces and Desktops Administrative Tasks Essential System Services Networking Fundamentals Security Readers will also have access to the online interactive test bank and learning environment, including hundreds of practice questions, electronic flashcards, and a searchable Glossary of important terms. Prepare smarter with Sybex's superior online study tools! About the LPIC-1 Linux Professional Institute Certification Practice Tests, Second Edition If you're preparing for this all-important exam, turn to LPIC-1 Practice Tests. This book includes 10 chapter tests that align with the 10 objective domains, PLUS one additional 90-question practice exam, for a total of 1,000 practice test questions. This book helps you gain the confidence you need for taking LPIC-1 Exam 101-500 and Exam 102-500. The practice test questions prepare you for test success. Study for the LPIC-1 certification with Sybex and get the advantage of exam day confidence. Readers will also have access to all the practice test questions using our online test bank. Prepare smarter with Sybex's superior interactive online learning environment and study tools!

Covers iOS 9.1 and up, Xcode 7.x, iPhone, iPad, and More! In just 24 sessions of one hour each, learn how to build powerful applications for today's hottest handheld devices: the iPhone and iPad! Using this book's straightforward, step-by-step approach, you'll master every skill and technology you need, from setting up your iOS development environment to building great user interfaces, sensing motion to writing multitasking applications. Each lesson builds on what you've already learned, giving you a rock-solid foundation for real-world success! Step-by-step instructions carefully walk you through the most common iOS development tasks. Quizzes and Exercises help you test your knowledge. Notes present interesting information related to the discussion. Tips show you easier ways to perform tasks. Cautions alert you to possible problems and give you advice on how to avoid them. Printed in full color-figures and code appear as they do in Xcode 7.x * Learn to navigate the Xcode 7.x development environment and install apps on your iDevice * Get started quickly with Apple's Open Source language: Swift 2.0 * Test code and application logic using the iOS Playground * Understand the Model-View-Controller (MVC) development pattern * Visually design and code interfaces using Xcode Storyboards, Segues, Exits, Image Slicing, and the iOS Object Library * Use Auto Layout and Size Classes to adapt to different screen sizes and orientations * Build advanced UIs with Tables, Split Views, Navigation Controllers, and more * Read and write preferences and data, and create System Settings plug-ins * Use iOS media playback and recording capabilities * Take photos and manipulate graphics with Core Image * Sense motion, orientation, and location with the accelerometer, gyroscope, and GPS * Use 3D touch to add Peek, Pop, and Quick Actions to your apps * Integrate online services using Twitter, Facebook, Email, Web Views, and Apple Maps * Create universal applications that run on both the iPhone and iPad * Write background-aware multitasking applications * Trace, debug, and monitor applications as they run * Additional files and updates available online

Move into iOS development by getting a firm grasp of its fundamentals, including the Xcode 13 IDE, Cocoa Touch, and the latest version of Apple's acclaimed programming language, Swift 5.5. With this thoroughly updated guide, you'll learn the Swift language, understand Apple's Xcode development tools, and discover the Cocoa framework. Explore Swift's object-oriented concepts Become familiar with built-in Swift types Dive deep into Swift objects, protocols, and generics Tour the life cycle of an Xcode project Learn how nibs are loaded Understand Cocoa's event-driven design Communicate with C and Objective-C In this edition, catch up on the latest iOS programming features: Structured concurrency: async/await, tasks, and actors Swift native formatters and attributed strings Lazy locals and throwing getters Enhanced collections with the Swift Algorithms and Collections packages Xcode tweaks: column breakpoints, package collections, and Info.plist build settings Improvements in Git integration, localization, unit testing, documentation, and distribution And more!

Operating System Forensics is the first book to cover all three critical operating systems for digital forensic investigations in one comprehensive reference. Users will learn how to conduct successful digital forensic examinations in Windows, Linux, and Mac OS, the methodologies used, key technical concepts, and the tools needed to perform examinations. Mobile operating systems such as Android, iOS, Windows, and Blackberry are also covered, providing everything practitioners need to conduct a forensic investigation of the most commonly used operating systems, including technical details of how each operating system works and how to find artifacts. This book walks you through the critical components of investigation and operating system functionality, including file systems, data recovery, memory forensics, system configuration, Internet access, cloud computing, tracking artifacts, executable layouts, malware, and log files. You'll find coverage of key technical topics like Windows Registry, /etc directory, Web browers caches, Mbox, PST files, GPS data, ELF, and more. Hands-on exercises in each chapter drive home the concepts covered in the book. You'll get everything you need for a successful forensics examination, including incident response tactics and legal requirements. Operating System Forensics is the only place you'll find all this covered in one book.

Thor's OS Xodus: Securely Migrating from Microsoft Windows to Mac OS X provides readers with everything they need to securely and successfully migrate from Microsoft to Mac. It includes information that can be found nowhere else, enabling users to execute a MSFT to OS X migration seamlessly and with minimal downtime. The text is the most complete roadmap for entities that want to move away from Microsoft and decouple their dependency on Microsoft products. It is a perfect choice for enterprise computing, providing the ease and simplicity of a UI that can also be incredibly customized via configuration files because of its BSD core. The text, authored by Thor Mullen, the founder of the "Hammer of God" security co-op group and Principal Security Architect for a worldwide, multi-billion dollar commerce platform, provides the perfect combination of Windows and Unix.

Covers 20.04, 20.10, and 21.04 Ubuntu Linux Unleashed 2021 Edition is filled with unique and advanced information for everyone who wants to make the most of the Ubuntu Linux operating system. This new edition has been thoroughly updated by a long-time Ubuntu user and early community leader to reflect the exciting new Ubuntu 20.04 LTS release, with a forthcoming online update mid-2021, at the halfway mark before the next LTS release comes out. Linux writer Matthew Helmke covers all you need to know about Ubuntu 20.04 LTS installation, configuration, productivity, command-line usage, development, systems administration, server operations, networking, virtualization, cloud computing, DevOps, and more-including intermediate-to-advanced techniques you won't find in any other book. Helmke presents up-to-the-minute introductions to Ubuntu's key productivity and web development tools, programming languages, hardware support, and more. You will find new or improved coverage of the Ubuntu desktop experience, common web servers and software stacks, an introduction to containers like Docker and Kubernetes, as well as a wealth of systems administration information that is stable and valuable over many years. Configure and use the Ubuntu desktop Get started with multimedia and productivity applications Manage Linux services, users, and software packages Administer and run Ubuntu from the command line Automate tasks and use shell scripting Provide secure remote access and configure a secure VPN Manage kernels and modules Administer file, print, email, proxy, LDAP, DNS, and HTTP servers (Apache, Nginx, or alternatives) Work with databases (SQL) and learn about NoSQL alternatives Get started with virtualization and cloud deployment, including information about containers Learn about options for managing large numbers of servers, including in the cloud Learn the basics about popular programming languages including Python, PHP, Perl, and gain an introduction to new alternatives such as Go and Rust

The Most Complete, Easy-to-Follow Guide to Ubuntu Linux "As an in-depth guide to Ubuntu, this book does an exceptional job of covering everything from using the Unity desktop to exploring key server configurations." -Elizabeth K. Joseph, Systems Administrator & Ubuntu Community Member The #1 Ubuntu resource, fully updated for Ubuntu 14.04 (Trusty Tahr)-the Long Term Support (LTS) release Canonical will support into 2019 Extensive new coverage of installation, security, virtualization, MariaDB, Python Programming, and much more Updated JumpStarts help you set up many complex servers in minutes Hundreds of up-to-date examples, plus four updated indexes deliver fast access to reliable answers Mark Sobell's A Practical Guide to Ubuntu Linux (R), Fourth Edition, is the most thorough and up-to-date reference to installing, configuring, securing, and working with Ubuntu desktops and servers. This edition has been fully updated for Ubuntu 14.04 (Trusty Tahr), a milestone LTS (Long Term Support) release, which Canonical will support on both desktops and servers into 2019. Sobell walks you through every essential feature and technique, from installing Ubuntu to working with the latest Ubuntu Unity desktop, and from configuring servers and monitoring networks to handling day-to-day system administration. His exceptionally clear explanations demystify everything from Apache, Samba, and postfix, to ufw, virtualization, and MariaDB/MySQL database management. PLUS a new chapter on programming in Python, today's most popular system automation tool! Fully updated JumpStart sections quickly help you get complex servers running-often in minutes. You'll also find up-to-date guidance on new LPI and CompTIA Linux certification pathways for Linux professionals. Sobell draws on his immense Linux knowledge to explain both the "hows" and the "whys" of Ubuntu. He's taught hundreds of thousands of readers and never forgets what it's like to be new to Linux. Whether you're a user, administrator, or programmer, you'll find everything you need here-now, and for years to come. The world's most practical Ubuntu Linux book is now even more useful! This book delivers Completely revamped installation coverage reflecting Ubuntu 14.04's improved ubiquity (graphical) and debian-installer (textual) installers Updated JumpStarts for quickly setting up Samba, Apache, postfix, FTP, NFS, CUPS, OpenSSH, DNS, and other complex servers Revamped and updated explanations of the ufw, gufw, and iptables firewall tools An all-new chapter on creating VMs (virtual machines) locally and in the cloud New coverage of the MariaDB open source plug-in replacement for MySQL Comprehensive networking coverage, including DNS/BIND, NFS, NIS, FTP, LDAP, and Cacti network monitoring Expert coverage of Internet server configuration and customization, including apache2 (Web) and postfix (mail) A new chapter covering state-of-the-art security techniques, including sudo, cryptography, hash functions, SSL certificates, plus a section on using GPG (GNU Privacy Guard) to protect documents in transit Deep coverage of essential administration tasks-from managing users to CUPS printing, and from configuring LANs and LDAP to building VMs (virtual machines) Complete instructions on keeping systems up to date using apt-get, dpkg, and other tools And much more . . . including a revised 500+ term glossary and four indexes

The book presents a succession of RISC-V processor implementations in increasing difficulty (non pipelined, pipelined, deeply pipelined, multithreaded, multicore). Each implementation is shown as an HLS (High Level Synthesis) code in C++ which can really be synthesized and tested on an FPGA based development board (such a board can be freely obtained from the Xilinx University Program targeting the university professors). The book can be useful for three reasons. First, it is a novel way to introduce computer architecture. The codes given can serve as labs for a processor architecture course. Second, the book content is based on the RISC-V Instruction Set Architecture, which is an open-source machine language promised to become the machine language to be taught, replacing DLX and MIPS. Third, all the designs are implemented through the High Level Synthesis, a tool which is able to translate a C program into an IP (Intellectual Property). Hence, the book can serve to engineers willing to implement processors on FPGA and to researchers willing to develop RISC-V based hardware simulators.

Considered a classic by an entire generation of Mac programmers, Dave Mark's Learn C on the Mac has been updated for you to include Mac OS X Mountain Lion and the latest iOS considerations. Learn C on the Mac: For OS X and iOS, Second Edition is perfect for beginners learning to program. It includes contemporary OS X and iOS examples This book also does the following: Provides best practices for programming newbies Presents all the basics with a pragmatic, Mac OS X and iOS -flavored approach Includes updated source code which is fully compatible with latest Xcode After reading this book, you'll be ready to program and build apps using the C language and Objective-C will become much easier for you to learn when you're ready to pick that up.What you'll learn Master C programming, the gateway to programming your Mac, iPhone or iPad Write apps for the contemporary Mac OS X interface, the cleanest user interface around Write apps for the modern iOS interface, one of the two most popular mobile platforms in the world Understand variables and how to design your own data structures Work with the file system Connect to data sources and the Internet How to handle error handling and much more Who this book is for For anyone wanting to learn to program in Mac OS X and iOS, including developers new to the Mac and iPhone/iPad, developers new to C, or students entirely new to programming.

Firewalls, Network Address Translation (NAT), network logging and accounting are all provided by Linux's Netfilter system, also known by the name of the command used to administer it, iptables. The iptables interface is the most sophisticated ever offered on

Linux and makes Linux an extremely flexible system for any kind of network filtering you might do. Large sets of filtering rules can be grouped in ways that makes it easy to test them and turn them on and off.

Do you watch for all types of ICMP traffic--some of them quite dangerous? Can you take advantage of stateful filtering to simplify the management of TCP connections? Would you like to track how much traffic of various types you get?

This pocket reference will help you at those critical moments when someone asks you to open or close a port in a hurry, either to enable some important traffic or to block an attack. The book will keep the subtle syntax straight and help you remember all the values you have to enter in order to be as secure as possible. The book has an introductory section that describes applications, followed by a reference/encyclopaedic section with all the matches and targets arranged alphabetically.

Microsoft used to release a new version of Windows every three years or so. With Windows 10, that pace has quickened, with new Windows 10 feature updates arriving every six months.

That’s why, less than three years after the initial release of Windows 10 Inside Out, we’re working on an all-new Third Edition for 2019. Windows 10 Inside Out, 3rd Edition will include coverage of a long list of new and improved features released in 2018, including the all-new Timeline feature and major changes in Microsoft Edge.

Last year, the installed base of Windows 10-powered PCs increased by more than 100 million. That pace of adoption will continue to rise as Windows users face the imminent end of support for Windows 7 a less than 18 months after this book is published.

Those new Windows 10 users will be under intense pressure to learn about Windows 10 quickly, and even early adopters will be looking for more up-to-date information sources. Windows 10 Inside Out, 3rd Edition will have both groups covered.

The format and page count of this new edition will not change significantly from previous editions. Inside, though, we’re revising the content (see the attached chapter outline) to emphasize what’s new in recent updates and how to adapt to the faster pace of change in the “Windows as a service” era.

As always, the Windows 10 Inside Out audience includes both Windows experts and those who aspire to be experts. The primary focus is on features that individuals can configure and manage on their own devices, but it also includes detailed discussions of tools that consultants and IT professionals can use to manage Windows 10 PCs in business environments.

Maintaining an iOS project often results in thousands of code files scattered around your folders. Did you ever wanted to reuse those files with other projects but found yourself making copies of Swift files? You are not alone! Many iOS developers struggle with this issue as well-unorganized projects, duplicated files, difficulty in testing, and long complication times. This book will show how Swift Package Manager can help you handle these problems by restructuring your project to make it efficient and straightforward. Swift Package Manager isn't magic, but you'll likely need a little guidance in using this nifty tool. You'll see how to reorganize projects smartly and efficiently, create your first Swift package, and learn what libraries are in this context. Then share your package with the rest of your projects. Next test your library's quality. And then take your library to the next level of power by including files that go beyond just code. By going over the methodology of big project organization, you will have the ability to extend your project into the future as Apple sees it. Make no mistake-the path for a modular and flexible project is not easy. With the help of Swift Package Manager, it becomes possible and worth it. What You'll Learn Create a Swift package both from the command line and from Xcode Manage Swift packages in public and private Git repositories Build test suites to test integrations between packages Who This Book Is For Senior iOS developers and team leaders who already have professional experience with Swift.