A Unix system can easily be identified by its prompts. When you first connect to a Unix system, you should receive the login prompt, which is usually "Login:" (Note, that the first character may or may not be capitalized.) On some systems, this prompt may be ";Login:" or "User:" (Again, the first letter may or may not be capitalized.) This may be preceded by a short message,

In our next sections together we will consider the Windows NT and Windows 2000 operating systems. Windows NT was Microsoft’s first effort in building a production server operating system, and they made a number of changes and improvements in Windows 2000. We are going to take a quick look at the architecture and file system and then move into the tools that you can use to gather clues from your operating system.

For our third session of the second part of the course, we will focus on the Windows 95 and Windows 98 operating systems. The examples are tested on Windows 98 since 95 systems are starting to be retired. The most important thing to know about this flavor of Windows is there is no file security.

Even as recently as five years ago, many computer industry experts would never have guessed how pervasive and “business critical” electronic messaging would eventually become. The degree to which some information technology professionals are surprised by the pervasive nature of today’s electronic mails systems is merely amusing to those of us that have had an e-mail address for more than 20 years. I have been using electronic mail of one type or another since 1980 and have specialized in messaging systems since 1988, so it comes as no surprise to me the current dependency that businesses and government entities have on...

Some hackers destroy people's files or entire hard drives; they're called crackers or vandals. Some novice hackers don't bother learning the technology, but simply download hacker tools to break into computer systems; they're called script kiddies. More experienced hackers with programming skills develop hacker programs and post them to the Web and to bulletin board systems. And then there are individuals who have no interest in the technology, but use the computer merely as a tool to aid them in stealing money, goods, or services. Despite the media-created myth of Kevin Mitnick, I am not a malicious hacker. But I'm getting ahead of myself....

T his book has been a great project to work on. I’d like to thank the people at Sybex who helped put this book together: Julie Sakaue and Emily Wolman for their wonderful editorial work, Shannon Murphy for cracking the scheduling whip and helping keep us all organized, Judy Fung and Jangshi Wang for making sure all the pages fit, and Heather O’Connor and Neil Edde for their guidance throughout.

This hand provides assistance in securing computer-based resources by explaining important concepts, cost considerations, and interrelationships of security controls. It illustrates the benefits of security controls, the major techniques or approaches for each control, and important related considerations.

A firewall is a piece of software or hardware that filters all network traffic between your computer, home network, or company network and the Internet. It is our position that everyone who uses the Internet needs some kind of firewall protection. This chapter tells you what a firewall does and sets down the basic questions that you should ask as you are evaluating spe- cific firewalls.

The way we customize our things says a lot about who we are. Today, everywhere we look, we are surrounded by a convergence of media – videogames, advertisements, and television.We are told what to believe, how to think, and how to act.We are told what’s cool and what’s not, what we should buy, what we should wear, and what music we should listen to. Hardware hacking has never been about what the mainstream media thinks. It’s about creativity, education, experimentation, personalization, and just having fun.This book is no different....

The Little Black Book of Computer Viruses has seen five good years in print. In those five years it has opened a door to seriously ask the question whether it is better to make technical information about computer viruses known or not. When I wrote it, it was largely an experiment. I had no idea what would happen. Would people take the viruses it contained and rewrite them to make all kinds of horrificly destructive viruses? Or would they by and large be used responsibly?

Virtualization is one of those buzz words that has been gaining immense popularity with IT professionals and executives alike. Promising to reduce the ever-growing infrastructure inside current data center implementations, virtualization technologies have cropped up from dozens of software and hardware companies. But what exactly is it? Is it right for everyone? And how can it benefit your organization? Virtualization has actually been around more than three decades. Once only accessible by the large, rich, and prosperous enterprise, virtualization technologies are now available in every aspect of computing, including hardware, software, and communications, for a nominal cost. In many cases, the technology is freely available (thanks to open-source initiatives)...

Preface Security has been a human concern since the dawn of time. With the rise of the digital society, information security has rapidly grown to an area of serious study and ongoing research. While much research has focused on the technical aspects of computer security, far less attention has been given to the management issues of information risk and the economic concerns facing firms and nations.

Our magazine is more than just eighty printed pages enclosed in a colourful cover. Just take a look at our website, forum, online store, hakin9.live... All this just for you, our valued readers. Our primary goal is to help you expand your knowledge. And we are constantly trying to fi nd new ways to reach this goal. There is probably no need to mention that in both the current and future issues of the hakin9 magazine you will fi nd valuable articles showing you secrets of IT security. But there is more to it....

A Brief History of Security “Well, I never heard it before,” said the Mock Turtle, “but it sounds uncommon nonsense.” —Lewis Carroll, Alice in Wonderland. Secret communication achieved by hiding the existence of a message is known as steganography. The word is derived from the Greek word “steganos,” meaning cov- ered and “graphin” meaning to write.

Mặc dù virus tin học đã xuất hiện lâu trên thế giới v ở cả trong nước. V không ai còn ngạc nhiên nữa nếu biết máy tính của mình đã bị nhiễm virus. Thế nhưng, thực đáng ngạc nhiên vì hầu như chưa có một cuốn sách nào đề cập đến virus một cách đầy đủ và chi tiết. Sự thiếu vắng thông tin này không phải là vô tình mà do những quan niệm cho rằng phổ biến những thông tin như vậy không những không được lợi ích gì mà còn àlm gia tăng số lượng virus lên, và như thế lm...

Now we begin our project to get you up and running in the world of Linux. If you have already made the commitment and have Ubuntu installed on your machine, you are essentially ready to go. Others of you might have made the commitment psychologically, but have yet to act on that commitment.

One of the joys of the Internet is the culture of knowledge sharing. In that tradition, a number of people contributed their knowledge to this booklet. Chief among them are the members of the Seattle Chapter of Webgrrls International.

Ngày nay, việc sử dụng internet rất phổ biến, bên cạnh đó người sử dụng luôn bị đe dọa bởi sự xâm nhập của virus gây ra những hậu quả rất nghiêm trọng trong việc quản lý dữ liệu, vì vậy đây là tài liệu giúp chúng ta nắm bắt được cách cài đặt hệ thống bảo vệ dữ liệu để ngăn chặn sự xâm nhập của virus. Mời các bạn cùng tham khảo.

Tham khảo tài liệu 'để bạn an toàn trên mạng !', công nghệ thông tin, an ninh - bảo mật phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

Các chuyên gia IBM đã sáng chế ra một mô hình tính toán mô phỏng vùng não sau, cho phép máy tính có thể suy nghĩ và hành động như các loài động vật bậc cao có xương sống. Hai chuyên gia Charles Peck và James Kozloski, thuộc nhóm nghiên cứu Biometaphorical Computing của IBM, cho biết họ đã tạo ra một mô hình toán học mô phỏng những hành vi của vùng vỏ não sau, phần não chỉ có ở động vật có xương sống (tiến hoá hơn). Vùng não này xử lý các hành vi phức tạp...