Improving Meek with Adversarial Techniques
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BPGC at Semeval-2020 Task 11: Propaganda Detection in News Articles with Multi-Granularity Knowledge Sharing and Linguistic Features Based Ensemble Learning
BPGC at SemEval-2020 Task 11: Propaganda Detection in News Articles with Multi-Granularity Knowledge Sharing and Linguistic Features based Ensemble Learning Rajaswa Patil1 and Somesh Singh2 and Swati Agarwal2 1Department of Electrical & Electronics Engineering 2Department of Computer Science & Information Systems BITS Pilani K. K. Birla Goa Campus, India ff20170334, f20180175, [email protected] Abstract Propaganda spreads the ideology and beliefs of like-minded people, brainwashing their audiences, and sometimes leading to violence. SemEval 2020 Task-11 aims to design automated systems for news propaganda detection. Task-11 consists of two sub-tasks, namely, Span Identification - given any news article, the system tags those specific fragments which contain at least one propaganda technique and Technique Classification - correctly classify a given propagandist statement amongst 14 propaganda techniques. For sub-task 1, we use contextual embeddings extracted from pre-trained transformer models to represent the text data at various granularities and propose a multi-granularity knowledge sharing approach. For sub-task 2, we use an ensemble of BERT and logistic regression classifiers with linguistic features. Our results reveal that the linguistic features are the reliable indicators for covering minority classes in a highly imbalanced dataset. 1 Introduction Propaganda is biased information that deliberately propagates a particular ideology or political orientation (Aggarwal and Sadana, 2019). Propaganda aims to influence the public’s mentality and emotions, targeting their reciprocation due to their personal beliefs (Jowett and O’donnell, 2018). News propaganda is a sub-type of propaganda that manipulates lies, semi-truths, and rumors in the disguise of credible news (Bakir et al., 2019). -
Dataset of Propaganda Techniques of the State-Sponsored Information Operation of the People’S Republic of China
Dataset of Propaganda Techniques of the State-Sponsored Information Operation of the People’s Republic of China Rong-Ching Chang Chun-Ming Lai [email protected] [email protected] Tunghai University Tunghai University Taiwan Taiwan Kai-Lai Chang Chu-Hsing Lin [email protected] [email protected] Tunghai University Tunghai University Taiwan Taiwan ABSTRACT ACM Reference Format: The digital media, identified as computational propaganda provides Rong-Ching Chang, Chun-Ming Lai, Kai-Lai Chang, and Chu-Hsing Lin. a pathway for propaganda to expand its reach without limit. State- 2021. Dataset of Propaganda Techniques of the State-Sponsored Informa- tion Operation of the People’s Republic of China. In KDD ’21: The Sec- backed propaganda aims to shape the audiences’ cognition toward ond International MIS2 Workshop: Misinformation and Misbehavior Min- entities in favor of a certain political party or authority. Further- ing on the Web, Aug 15, 2021, Virtual. ACM, New York, NY, USA, 5 pages. more, it has become part of modern information warfare used in https://doi.org/10.1145/nnnnnnn.nnnnnnn order to gain an advantage over opponents. Most of the current studies focus on using machine learning, quantitative, and qualitative methods to distinguish if a certain piece 1 INTRODUCTION of information on social media is propaganda. Mainly conducted Propaganda has the purpose of framing and influencing opinions. on English content, but very little research addresses Chinese Man- With the rise of the internet and social media, propaganda has darin content. From propaganda detection, we want to go one step adopted a powerful tool for its unlimited reach, as well as multiple further to providing more fine-grained information on propaganda forms of content that can further drive engagement online and techniques that are applied. -
Skypemorph: Protocol Obfuscation for Tor Bridges
SkypeMorph: Protocol Obfuscation for Tor Bridges Hooman Mohajeri Moghaddam Baiyu Li Mohammad Derakhshani Ian Goldberg Cheriton School of Computer Science University of Waterloo Waterloo, ON, Canada {hmohajer,b5li,mderakhs,iang}@cs.uwaterloo.ca ABSTRACT The Tor network is designed to provide users with low- latency anonymous communications. Tor clients build cir- cuits with publicly listed relays to anonymously reach their destinations. However, since the relays are publicly listed, they can be easily blocked by censoring adversaries. Con- sequently, the Tor project envisioned the possibility of un- listed entry points to the Tor network, commonly known as bridges. We address the issue of preventing censors from detecting the bridges by observing the communications be- tween them and nodes in their network. We propose a model in which the client obfuscates its mes- sages to the bridge in a widely used protocol over the Inter- net. We investigate using Skype video calls as our target protocol and our goal is to make it difficult for the censor- Figure 1: This graph from metrics.torproject.org shows the ing adversary to distinguish between the obfuscated bridge number of users directly connecting to the Tor network from connections and actual Skype calls using statistical compar- China, from mid-2009 to the present. It shows that, after isons. 2010, the Tor network has been almost completely blocked We have implemented our model as a proof-of-concept from clients in China who do not use bridges. [41] pluggable transport for Tor, which is available under an open-source licence. Using this implementation we observed the obfuscated bridge communications and compared it with attempts to block access to Tor by regional and state-level those of Skype calls and presented the results. -
Global Manipulation by Local Obfuscation ∗
Global Manipulation by Local Obfuscation ∗ Fei Liy Yangbo Songz Mofei Zhao§ August 26, 2020 Abstract We study information design in a regime change context. A continuum of agents simultaneously choose whether to attack the current regime and will suc- ceed if and only if the mass of attackers outweighs the regime’s strength. A de- signer manipulates information about the regime’s strength to maintain the status quo. The optimal information structure exhibits local obfuscation, some agents receive a signal matching the true strength of the status quo, and others receive an elevated signal professing slightly higher strength. Public signals are strictly sub- optimal, and in some cases where public signals become futile, local obfuscation guarantees the collapse of agents’ coordination. Keywords: Bayesian persuasion, coordination, information design, obfuscation, regime change JEL Classification: C7, D7, D8. ∗We thank Yu Awaya, Arjada Bardhi, Gary Biglaiser, Daniel Bernhardt, James Best, Jimmy Chan, Yi-Chun Chen, Liang Dai, Toomas Hinnosaar, Tetsuya Hoshino, Ju Hu, Yunzhi Hu, Chong Huang, Nicolas Inostroza, Kyungmin (Teddy) Kim, Qingmin Liu, George Mailath, Laurent Mathevet, Stephen Morris, Xiaosheng Mu, Peter Norman, Mallesh Pai, Alessandro Pavan, Jacopo Perego, Xianwen Shi, Joel Sobel, Satoru Takahashi, Ina Taneva, Can Tian, Kyle Woodward, Xi Weng, Ming Yang, Jidong Zhou, and Zhen Zhou for comments. yDepartment of Economics, University of North Carolina, Chapel Hill. Email: [email protected]. zSchool of Management and Economics, The Chinese University of Hong Kong, Shenzhen. Email: [email protected]. §School of Economics and Management, Beihang University. Email: [email protected]. 1 1 Introduction The revolution of information and communication technology raises growing con- cerns about digital authoritarianism.1 Despite their tremendous effort to establish in- formation censorship and to spread disinformation, full manipulation of information remains outside autocrats’ grasp in the modern age. -
The Production and Circulation of Propaganda
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by RMIT Research Repository The Only Language They Understand: The Production and Circulation of Propaganda A thesis submitted in fulfilment of the requirements for the degree of Doctor of Philosophy Christian Tatman BA (Journalism) Hons RMIT University School of Media and Communication College of Design and Social Context RMIT University February 2013 Declaration I Christian Tatman certify that except where due acknowledgement has been made, the work is that of the author alone; the work has not been submitted previously, in whole or in part, to qualify for any other academic award; the content of the thesis is the result of work which has been carried out since the official commencement date of the approved research program; any editorial work, paid or unpaid, carried out by a third party is acknowledged; and, ethics procedures and guidelines have been followed. Christian Tatman February 2013 i Acknowledgements I would particularly like to thank my supervisors, Dr Peter Williams and Associate Professor Cathy Greenfield, who along with Dr Linda Daley, have provided invaluable feedback, support and advice during this research project. Dr Judy Maxwell and members of RMIT’s Research Writing Group helped sharpen my writing skills enormously. Dr Maxwell’s advice and the supportive nature of the group gave me the confidence to push on with the project. Professor Matthew Ricketson (University of Canberra), Dr Michael Kennedy (Mornington Peninsula Shire) and Dr Harriet Speed (Victoria University) deserve thanks for their encouragement. My wife, Karen, and children Bethany-Kate and Hugh, have been remarkably patient, understanding and supportive during the time it has taken me to complete the project and deserve my heartfelt thanks. -
Machine Learning Model That Successfully Detects Russian Trolls 24 3
Human–machine detection of online-based malign information William Marcellino, Kate Cox, Katerina Galai, Linda Slapakova, Amber Jaycocks, Ruth Harris For more information on this publication, visit www.rand.org/t/RRA519-1 Published by the RAND Corporation, Santa Monica, Calif., and Cambridge, UK © Copyright 2020 RAND Corporation R® is a registered trademark. RAND Europe is a not-for-profit research organisation that helps to improve policy and decision making through research and analysis. RAND’s publications do not necessarily reflect the opinions of its research clients and sponsors. Limited Print and Electronic Distribution Rights This document and trademark(s) contained herein are protected by law. This representation of RAND intellectual property is provided for noncommercial use only. Unauthorized posting of this publication online is prohibited. Permission is given to duplicate this document for personal use only, as long as it is unaltered and complete. Permission is required from RAND to reproduce, or reuse in another form, any of its research documents for commercial use. For information on reprint and linking permissions, please visit www.rand.org/pubs/permissions. Support RAND Make a tax-deductible charitable contribution at www.rand.org/giving/contribute www.rand.org www.randeurope.org III Preface This report is the final output of a study proof-of-concept machine detection in a known commissioned by the UK Ministry of Defence’s troll database (Task B) and tradecraft analysis (MOD) Defence Science and Technology of Russian malign information operations Laboratory (Dstl) via its Defence and Security against left- and right-wing publics (Task C). Accelerator (DASA). -
Propaganda Explained
Propaganda Explained Definitions of Propaganda, (and one example in a court case) revised 10/21/14 created by Dale Boozer (reprinted here by permission) The following terms are defined to a student of the information age understand the various elements of an overall topic that is loosely called “Propaganda”. While some think “propaganda” is just a government thing, it is also widely used by many other entities, such as corporations, and particularly by attorney’s arguing cases before judges and specifically before juries. Anytime someone is trying to persuade one person, or a group of people, to think something or do something it could be call propagandaif certain elements are present. Of course the term “spin” was recently created to define the act of taking a set of facts and distorting them (or rearranging them) to cover mistakes or shortfalls of people in public view (or even in private situations such as being late for work). But “spin” and “disinformation” are new words referring to an old, foundational, concept known as propaganda. In the definitions below, borrowed from many sources, I have tried to craft the explanations to fit more than just a government trying to sell its people on something, or a political party trying to recruit contributors or voters. When you read these you will see the techniques are more universal. (Source, Wikipedia, and other sources, with modification). Ad hominem A Latin phrase that has come to mean attacking one’s opponent, as opposed to attacking their arguments. i.e. a personal attack to diffuse an argument for which you have no appropriate answer. -
WEAPONS of MASS DISTRACTION: Foreign State-Sponsored Disinformation in the Digital Age
WEAPONS OF MASS DISTRACTION: Foreign State-Sponsored Disinformation in the Digital Age MARCH 2019 PARK ADVISORS | Weapons of Mass Distraction: Foreign State-Sponsored Disinformation in the Digital Age Authored by Christina Nemr and William Gangware Acknowledgements The authors are grateful to the following subject matter experts who provided input on early drafts of select excerpts: Dr. Drew Conway, Dr. Arie Kruglanski, Sean Murphy, Dr. Alina Polyakova, and Katerina Sedova. The authors also appreciate the contributions to this paper by Andrew Rothgaber and Brendan O’Donoghue of Park Advisors, as well as the editorial assistance provided by Rhonda Shore and Ryan Jacobs. This report was produced with support from the US Department of State’s Global Engagement Center. Any views expressed in this report are those of the authors and do not necessarily reflect the views of the US State Department, Park Advisors, or its subject matter expert consultants. Any errors contained in this report are the authors’ alone. PARK ADVISORS | Weapons of Mass Distraction: Foreign State-Sponsored Disinformation in the Digital Age 0. Table of Contents 01 Introduction and contextual analysis 04 How do we define disinformation? 06 What psychological factors drive vulnerabilities to disinformation and propaganda? 14 A look at foreign state-sponsored disinformation and propaganda 26 Platform-specific challenges and efforts to counter disinformation 39 Knowledge gaps and future technology challenges PARK ADVISORS | Weapons of Mass Distraction: Foreign State-Sponsored Disinformation in the Digital Age 1 Introduction and 1. contextual analysis On July 12, 2014, viewers of Russia’s main state-run television station, Channel One, were shown a horrific story. -
It's Only Wrong If It's Transactional: Moral Perceptions of Obfuscated
ASRXXX10.1177/0003122418806284American Sociological ReviewSchilke and Rossman 8062842018 American Sociological Review 1 –29 It’s Only Wrong If It’s © American Sociological Association 2018 https://doi.org/10.1177/0003122418806284DOI: 10.1177/0003122418806284 Transactional: Moral journals.sagepub.com/home/asr Perceptions of Obfuscated Exchange Oliver Schilkea and Gabriel Rossmanb Abstract A wide class of economic exchanges, such as bribery and compensated adoption, are considered morally disreputable precisely because they are seen as economic exchanges. However, parties to these exchanges can structurally obfuscate them by arranging the transfers so as to obscure that a disreputable exchange is occurring at all. In this article, we propose that four obfuscation structures—bundling, brokerage, gift exchange, and pawning—will decrease the moral opprobrium of external audiences by (1) masking intentionality, (2) reducing the explicitness of the reciprocity, and (3) making the exchange appear to be a type of common practice. We report the results from four experiments assessing participants’ moral reactions to scenarios that describe either an appropriate exchange, a quid pro quo disreputable exchange, or various forms of obfuscated exchange. In support of our hypotheses, results show that structural obfuscation effectively mitigates audiences’ moral offense at disreputable exchanges and that the effects are substantially mediated by perceived attributional opacity, transactionalism, and collective validity. Keywords obfuscation, economic -
HOP: Hardware Makes Obfuscation Practical∗
HOP: Hardware makes Obfuscation Practical∗ Kartik Nayak1, Christopher W. Fletcher2, Ling Ren3, Nishanth Chandran4, Satya Lokam4, Elaine Shi5, and Vipul Goyal4 1UMD { [email protected] 2UIUC { [email protected] 3MIT { [email protected] 4Microsoft Research, India { fnichandr, satya, [email protected] 5Cornell University { [email protected] Abstract Program obfuscation is a central primitive in cryptography, and has important real-world applications in protecting software from IP theft. However, well known results from the cryptographic literature have shown that software only virtual black box (VBB) obfuscation of general programs is impossible. In this paper we propose HOP, a system (with matching theoretic analysis) that achieves simulation-secure obfuscation for RAM programs, using secure hardware to circumvent previous impossibility results. To the best of our knowledge, HOP is the first implementation of a provably secure VBB obfuscation scheme in any model under any assumptions. HOP trusts only a hardware single-chip processor. We present a theoretical model for our complete hardware design and prove its security in the UC framework. Our goal is both provable security and practicality. To this end, our theoretic analysis accounts for all optimizations used in our practical design, including the use of a hardware Oblivious RAM (ORAM), hardware scratchpad memories, instruction scheduling techniques and context switching. We then detail a prototype hardware implementation of HOP. The complete design requires 72% of the area of a V7485t Field Programmable Gate Array (FPGA) chip. Evaluated on a variety of benchmarks, HOP achieves an overhead of 8× ∼ 76× relative to an insecure system. Compared to all prior (not implemented) work that strives to achieve obfuscation, HOP improves performance by more than three orders of magnitude. -
Dynamic Deception∗
Dynamic Deception∗ Axel Anderson Lones Smith† Georgetown Michigan September 15, 2009 Abstract We model dynamic deception exercises in Ponzi schemes, war, terrorism, industrial/political espionage, and insider trading. We introduce a new class of competitive continuous time games with an informed player having an unbounded action intensity, whose actions are partially observed by a rival, or sequence of rivals. We find extremely strong square-root logarithm decreasing returns to deception. We provide economic formulations and analyses of espionage, disinformation, and obfuscation. Notably, we establish a globally concave value of information (espionage). Disinformation is always substantial, and pushes confidence in the wrong state above 86%. Finally, obfuscation rises as the public grows more uncertain. ∗This paper was begun when Axel was visiting the University of Michigan. We thank seminar participants at Texas, and especially Max Stinchcombe. Earlier less focused versions of this paper were presented at GAMES 2008, Decentralization (2008), Stoneybrook (2008), George Washington, Georgetown, Michigan, Toronto, and Western Ontario. †Lones thanks the NSF for research funding. 1 Introduction The most valuable commodity I know of is ‘information’. — Gordon Gekko (“Wall Street”, 1987) Deception is in the air: Our inboxes are swamped with spam Nigerian email schemes or other phishing emails that generate $20 billion a year. Political subterfuge and cover- ups persist around the world — like Iran’s falsified election outcome. On Wall Street, multi-billion -
Beyond Nineteen Eighty-Four: Doublespeak in a Post-Orwellian Age
DOCUMENT RESUME ED 311 451 CS 212 095 AUTHOR Lutz, William, Ed. TITLE Beyond Nineteen Eighty-Four: Doublespeak in a Post-Orwellian Age. INSTITUTION National Council of Teachers of English, Urbana, Ill. REPORT NO ISBN-0-8141-0285-9 PUB DATE 89 NOTE 222p. AVAILABLE FROMNational Council of Teachers of English, 1111 Kenyon Rd., Urbana, IL 61801 (Stock No. 02859-3020; $12.95 member, $15.95 nonmember). PUB TYPE Books (010) -- Collected Works - General (020) EDRS PRICE MF01/PC09 Plus Postage. DESCRIPTORS *Deception; English; Language Role; *Language Usage; Linguistics; *Persuasive Discourse; *Propaganda IDENTIFIERS *Doublespeak; Jargon; Orwell (George) ABSTRACT This book probes the efforts at manipulation individuals face daily in this information age and the tactics of persuaders from many sectors of society using various forms of Orwellian "doublespeak." The book contains the following essays: (1) "Notes toward a Definition of Doublespeak" (William Lutz); (2) "Truisms Are True: Orwell's View of Language" (Walker Gibson); (3) "Mr. Orwell, Mr. Schlesinger, and the Language" (Hugh Rank); (4) "What Dc We Know?" (Charles Weingartner); (5) "The Dangers of Singlespeak" (Edward M. White); (6) "The Fallacies of Doublespeak" (Dennis Rohatyn); (7) "Doublespeak and Ethics" (George R. Bramer); (8) "Post-Orwellian Refinements of Doublethink: Will the Real Big Brother Please Stand Up?" (Donald Lazere); (9) "Worldthink" (Richard Ohmann); (10) "'Bullets Hurt, Corpses Stink': George Orwell and the Language of Warfare" (Harry Brent); (11) "Political Language: The Art of Saying Nothing" (Dan F. Hahn); (12) "Fiddle-Faddle, Flapdoodle, and Balderdash: Some Thoughts about Jargon" (Frank J. D'Angelo); (13) "How to Read an Ad: Learning to Read between the Lies" (D.