Guess Who’s Texting You? Evaluating the Security of Smartphone Messaging Applications Sebastian Schrittwieser‚ Peter Fr¨ hwirt‚ Peter Kieseberg‚ Manuel Leithner‚ u Martin Mulazzani‚ Markus Huber‚ Edgar Weippl SBA Research gGmbH Vienna‚ Austria (1stletterfirstname)(lastname)@sba-research.org Abstract In recent months a new generation of mobile messaging and VoIP applications for smartphones was introduced. These services offer free calls and text messages to other subscribers‚ providing
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Assurance The purpose of Quality Assurance is to ensure quality in all aspects of assessment. This is done through the processes of internal and external verification. Internal Verification As part of the process of checks to ensure that national standards are maintained‚ all assessors’ assessment decisions are subject to a process of verification. An internal verifier monitors assessment decisions made by the assessor to ensure they are consistent‚ fair‚ valid and reliable. Methods of Quality
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Reading 1.2 - Accounting theory and development Accounting Theory Construction with Inductive and deductive approach Deductive approach vs. Inductive approach in accounting theory construction Deductive reasoning entails a valid argument in which it is impossible to assert the premises and to deny the conclusion without contradicting oneself. Deductive approach to accounting theory construction begins with establishing the objective of accounting. Once identified‚ definitions and assumption
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Project 4‚ pg.522 1) m=3‚ n=4 n2– m2=(4)2–(3)2=16-9=7 VERIFICATION: (7)2+(24)2=(25)2 2mn=2(3)(4)=24 49+576=625 n2+m2=(4)2+(3)2=16+9=25 625=625 TRIPLE: 7‚ 24‚ 2 2) m=1‚ n=3 n2-m2=(3)2-(1)2=9-1=8 2mn=2(1)(3)=6 n2+m2=(3)2+(1)2=9+1=10 TRIPLE: 6‚8‚10 VERIFICATION: (6)2+(8)2=(10)2 36+64=100 100=100 3) m=4‚ n=5 n2-m2=(5)2=(4)2=25-16=9 2mn=2(4)(5)=40 n2+m2=(5)2+(4)2=25+16=41 TRIPLE: 9‚40‚41 VERIFICATION: (9)2=(40)2=(41)2 81+1600=1681 1681=1681 4) m=5
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1) How does the public key cryptography work? Explain in detail? 1. Public-key‚ what it is Public-key refers to a cryptographic mechanism. It has been named public-key to differentiate it from the traditional and more intuitive cryptographic mechanism known as: symmetric-key‚ shared secret‚ secret-key and also called private-key. Symmetric-key cryptography is a mechanism by which the same key is used for both encrypting and decrypting; it is more intuitive because of its similarity with
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Privacy settings of facebook Privacy of Facebook In creating a account in facebook ‚ it is easy ‚ you must fill up the form ‚ it includes the personal information of yours. In the privacy settings‚ there are questions for example “who can see my stuffed?” this is a example of privacy question ‚ you can choose‚ first public if you want all of the users of facebook can see this‚ second friends – all of your facebook friends will see what did you post and lastly only me – no one can
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Case Study: Database Development CIS 515 Strategic Planning for Database Systems Dr. John Niemiec Rashid E. Williams Strayer University DATABASE DEVELOPMENT The software development lifecycle encompasses a variety of different methods‚ designed to enhance the processes involved with designing‚ testing‚ implementing and delivering a finished and polished product to the client. While there are many different schools of thought‚ many would agree that each methodology
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be used for verification of the user ’s identity. Keystroke patterns combined with other security schemes can provide a very powerful and effective means of authentication and verification of computer users. Keystroke dynamics are rich with individual mannerism and traits and they can be used to extract features that can be used to authenticate/verify access to computer systems and networks. The methods used to prove the theory that typing patterns can be used as a means of verification is the many
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and authorized. Examine purchase requisition for; Evidence of supervisory approval e.g. initial/signature. Existence Purchase requisitions forms are manually numbered. The lack of adequate documents and records leads to lack of internal verification which may results in duplicate or missing orders or even orders for personal rather than company’s use. This will lead to over/understated purchases. There are adequate documents and record. Purchase requisitions are pre-numbered and accounted
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stages of development and assessment. There is not one biometric modality that is best for all implementations. Many factors must be taken into account when implementing a biometric device including location‚ security risk‚ task (identification or verification)‚ expected number of users‚ user circumstances‚ existing data‚ etc. it is also important to note that biometric modalities are in varying stage of maturity. For example‚ fingerprint recognition has been used for over a century while iris recognition
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