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Mobile code also refers to code "used for rent", a way of making software packages more affordable. i.e. to use on demand. This is specially relevant to the mobile devices being developed which are cellular phones, PDAs, etc. all in one. Instead of installing software packages, they can be
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The purpose of code mobility is to support sophisticated operations. For example, an application can send an object to another machine, and the object can resume executing inside the application on the remote machine with the same state as it had in the originating application.
149:, TRUELOVE, and AnnaK emails viruses/worms all were implemented as mobile code (VBScript in a .vbs email attachment that executed in Windows Scripting Host). In almost all situations, the user is not aware that mobile code is downloading and executing in their workstation.
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Mobile code can also download and execute in the client workstation via email. Mobile code may download via an email attachment (e.g., macro in a Word file) or via an HTML email body (e.g., JavaScript). For example, the
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involves moving the code and the data only. Therefore, it may be necessary to restart the execution of the program at the destination host.
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It is common practice in distributed systems to require the movement of code or processes between parts of the system, instead of data.
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105:(this is important in cases where the running application needs to maintain its state as it migrates from host to host), while
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According to a classification proposed by
Fuggetta, Picco and Vigna, code mobility can be either strong or weak:
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35:(or moved) from one machine or application to another. This is the process of moving
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Examples of code mobility include scripts downloaded over a network (for example
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135:— Objects or code with the ability to migrate between machines autonomously.
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101:, data and the execution state from one host to another, notably via a
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129:— A client downloads code from a remote machine to execute locally.
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Fuggetta, Alfonso; Gian Pietro Picco; Giovanni Vigna (1998).
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123:— A client sends code to a remote machine for execution.
263:. Australian Defence Force Academy. Archived from
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43:as opposed to distributed computation where the
158:"leased" and paid for on a per-usage basis.
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209:IEEE Transactions on Software Engineering
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73:, Shockwave movies (and Xtras), and
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292:Distributed computing architecture
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16:Process in distributed computing
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205:"Understanding Code Mobility"
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27:is the ability for running
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97:involves moving both the
31:, code or objects to be
261:"Mobile Code Security"
112:Several paradigms, or
39:across the nodes of a
21:distributed computing
114:architectural styles
95:strong code mobility
107:weak code mobility
259:Dr Lawrie Brown.
231:10.1109/32.685258
178:Remote evaluation
121:Remote evaluation
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297:Types of malware
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79:Microsoft Office
77:embedded within
71:Flash animations
67:ActiveX controls
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267:on 3 April 2012
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222:10.1.1.20.3442
215:(5): 342–361.
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168:Code on demand
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269:. Retrieved
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242:. Retrieved
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173:Mobile agent
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153:Renting code
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63:Java applets
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81:documents.
37:mobile code
286:Categories
184:References
55:JavaScript
47:is moved.
239:0098-5589
217:CiteSeerX
271:23 April
162:See also
147:ILOVEYOU
85:Overview
59:VBScript
33:migrated
29:programs
244:29 July
140:Viruses
41:network
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75:macros
273:2012
246:2009
235:ISSN
99:code
45:data
227:doi
61:),
19:In
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191:^
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