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Author: Clifford Stoll Date: May 1988 Reference: http://cnegmuedu/modules/acmpkp/security/texts/HACKERPDF Abstract excerpt: "The experience of the Lawrence Berkeley Laboratory in tracking an intruder suggests that any operating system is insecure when obvious security rules are ignored How a site should respond to an intrusion, whether it is possible to trace an intruder trying to evade detection, what can be learned from tracking an intruder, what methods the intruder used, and the responsiveness of the law enforcement community are also discussed" Significance: Cliff Stoll may have been the first person to understand the importance of network-based security monitoring He documented his 1986 investigation in this paper and the 1989 book The Cuckoo's Egg The following extracts are eerily prescient It's both amazing and disappointing how little has changed since Stoll commented on the state of computer security while he was monitoring German intruders at Lawrence Berkeley Laboratory Highlights: This paper is only 17 pages long, and it is an absolute must-read I could only include a few quotes here, but wanted to share much more Stoll explains why a passive monitoring system, like a network-based full content collection system, is superior to host-based systems in some respects Host-based systems interfere with the systems they watch and they are visible to intruders: "Off-line monitors are invisible even to an intruder with system privileges Moreover, they gave printouts of the intruder's activities on our local area network (LAN), letting us see his attempts to enter other closely linked computers Besides taking up resources, on-line monitors would have warned the intruder that he was being tracked We used this type of off-line monitor and avoided tampering with our operating systems" The author used full content monitoring to perform threat assessment: "Throughout this time, the printouts showed his interests, techniques, successes, and failures We observed the intruder's familiarity with various operating systems and became familiar with his programming style Buried in this chatter were clues to the intruder's location and persona, but we needed to temper inferences based on traffic analysis Only a complete trace back would identify the culprit" In the years since Stoll wrote these words, nothing has changed: "While connected to MILNET, this intruder attempted to enter about 450 computers, trying to log in using common account names like root, guest, system, or field Taking advantage of well-publicized problems in several operating systems, he was often able to obtain root or system-manager privileges" Network-based monitoring caught activity that disabled host-based monitoring missed Notice how the intruder preferred to appear as though he belonged on his victim systems: "Whenever possible, he disabled accounting and audit trails, so there would be no trace of his presence He planted Trojan horses to passively capture passwords and occasionally created new accounts to guarantee his access into computers Apparently he thought detection less likely if he did not create new accounts, for he seemed to prefer stealing existing, unused accounts". java ean 13 reader Java Barcode Reader Tutorial to scan, read linear, 2d barcodes in ...
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ZXing ("Zebra Crossing") barcode scanning library for Java , Android .... The Barcode Scanner app can no longer be published, so it's unlikely any changes will ... (I don t know which is cooler: that Ruby lets you add methods to built-in classes, or that "deified" is a palindrome) Modifying built-in classes is a powerful technique, but with great power comes great responsibility, and it s considered bad form to add methods to built-in classes without having a really good reason for doing so Rails does have some good reasons; for example, in web applications we often want to prevent variables from being blank eg, a user s name should be something other than spaces and other whitespace so Rails adds a blank method to Ruby Since the Rails console automatically includes the Rails extensions, we can see an example here (this won t work in plain irb): word pdf 417, microsoft word code 39 font, birt barcode maximo, how to create barcodes in word 2007, birt ean 128, birt ean 13 java ean 13 reader java barcode reader - Stack Overflow
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How to create a barcode reader in Java to scan and read EAN - 13 barcodes in Java SE, Java EE and Java ME platforms. boolean hasFocus, int row, int col) { if (hasFocus) { setBackground(ColorlightGray ); mdtableClicked(); } else setBackground(new Color(0xffffce)); if (value != null) { Mail ml = (Mail) value; String title = mlgetLabel(); setText(title); //set the text setIcon(mlgetIcon()); //and the icon } return this; } } We see that a string of spaces is not empty, but it is blank Note also that nil is blank; since nil isn t a string, this is a hint that Rails actually adds blank to String s base class, which (as we saw at the beginning of this section) is Object itself We ll see some other examples of Rails additions to Ruby classes in Section 932 17 For those familiar with JavaScript, this functionality is comparable to using a built-in class prototype object to augment the class (Thanks to reader Erik Eldridge for pointing this out) java ean 13 reader java ean 13 reader : Extra reading in Java Integrating EAN 13 in ...
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BusinessRefinery Java Barcode Reader is a Java library that can read 1D and 2D barcode images, and decoded to barcode message. It can be used. Since one of the arguments to the getTableCellRendererComponent method is whether the cell is selected, we have an easy way to return a somewhat different display when the cell is selected In this case, we return a gray background instead of a white one We also could set a different border if we wanted Figure 324 shows a display of the program Note that the selected cell is shown with a gray background Figure 324 Rendering objects that implement the Mail interface, using their icon and text properties The following is a list of the home pages for some of the more prolific and currently active researchers in the network security field They have links to many or all of the papers they've written Paul Barford: http://wwwcswiscedu/~pb/ Philip Chan: http://wwwcsfitedu/~pkc/ Todd Heberlein: http://wwwattackcentercom/ Christopher Kruegel: http://wwwinfosystuwienacat/Staff/chris/ Wenke Lee: http://wwwccgatechedu/~wenke/ Shawn Ostermann: http://wwweecsohiouedu/faculty/ostermannhtml Vern Paxson: http://wwwicirorg/vern/ Phillip Porras: http://wwwsdlsricom/people/porras/ Steve Romig: http://wwwnetohio-stateedu/~romig/ Giovanni Vigna: http://wwwcsucsbedu/~vigna/ All this talk about classes and inheritance may have triggered a flash of recognition, because we have seen both before, in the Pages controller (Listing 324): class PagesController < ApplicationController def home @title = "Home" end def contact @title = "Contact" end def about @title = "About" end end 1 Consider a personal checkbook management program such as Quicken It manages several bank accounts and investments and can handle your bill paying Where could you use a Factory pattern in designing a program like that 2 Suppose that you are writing a program to assist homeowners in designing additions to their houses What objects might a Factory pattern be used to produce You re now in a position to appreciate, at least vaguely, what this code means: PagesController is a class that inherits from ApplicationController, and comes equipped with home, contact, and about methods, each of which defines the instance variable @title Since each Rails console session loads the local Rails environment, we can even create a controller explicitly and examine its class hierarchy:18 The intellectual home of intrusion detection is the Recent Advances in Intrusion Detection conference Its home page is http://wwwraid-symposiumorg/ >> => >> => >> => >> => >> => >> => >> => controller = PagesControllernew #<PagesController:0x22855d0> controllerclass PagesController controllerclasssuperclass ApplicationController controllerclasssuperclasssuperclass ActionController::Base controllerclasssuperclasssuperclasssuperclass ActionController::Metal controllerclasssuperclasssuperclasssuperclasssuperclass AbstractController::Base controllerclasssuperclasssuperclasssuperclasssuperclasssuperclass Object Program \Base Factory\ A simple prototype showing a Simple Factory pattern \Factory Illustration\ Illustrates the use of the Simple Factory in FFT \FFT\ Description Illustrates the Namer factory java ean 13 reader EAN - 13 Java - KeepAutomation.com
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