Individual Privacy vs Population Privacy: Learning to Attack Anonymization

Over the last decade there have been great strides made in developing techniques to compute functions privately. In particular, Differential Privacy gives strong promises about conclusions that can be drawn about an individual. In contrast, various syntactic methods for providing privacy (criteria such as kanonymity and l-diversity) have been criticized for still allowing private information of an individual to be inferred. In this report, we consider the ability of an attacker to use data meeting privacy definitions to build an accurate classifier. We demonstrate that even under Differential Privacy, such classifiers can be used to accurately infer "private" attributes in realistic data. We compare this to similar approaches for inferencebased attacks on other forms of anonymized data. We place these attacks on the same scale, and observe that the accuracy of inference of private attributes for Differentially Private data and l-diverse data can be quite similar

Pirate or subscriber? An exploratory study on italian consumers' music habits

Purpose of the paper: This paper analyzes Italian consumers’ music habits in terms of online piracy behaviors and their interest toward subscription-based music services (SBMS), i.e. services that for a small monthly fee give users legal access to vast music libraries across multiple devices. The objective is to try and profile a piracy-prone consumer and explore if SBMS could be a viable alternative to online music piracy in Italy, where the general piracy rate is very high. Methodology: The study is based on an empirical quantitative analysis through the collection of 505 questionnaires completed by Italian consumers. Findings: The paper highlights how Italian consumers reflect the ‘attitude-behavior gap’ in music consumption, as they perceive online music piracy as ethically wrong, yet they still show low preference for the legal, reasonably priced choice (such as SBMS). Younger, male, lower education, students have the highest propensity towards online piracy. In addition, consumers’ awareness, familiarity and interest in subscriptionbased music services are still very low. Research limitations: The limitations of the paper are linked mainly to the adapted scales, to the omission of alternative determinants of attitude towards piracy, to the composition of the sample and for analyzing only two subscription-based music services (Napster and Spotify). Managerial implications: The results call for greater efforts by music industry actors and public institutions to educate Italian consumers about the consequences of their online piracy behavior and the possible solutions offered by SBMS. Originality of the paper: This paper is the first to focus on Italian consumers’ music habits, their attitude and behavior towards online piracy and their interest toward subscription-based music services as a viable alternative

Does the Internet Make Markets More Competitive?

The Internet has the potential to significantly reduce search costs by allowing consumers to engage in low-cost price comparisons online. This paper provides empirical evidence on the impact that the rise of Internet comparison shopping sites has had for the prices of life insurance in the 1990s. Using micro data on individual life insurance policies, the results indicate that, controlling for individual and policy characteristics, a 10 percent increase in the share of individuals in a group using the Internet reduces average insurance prices for the group by as much as 5 percent. Further evidence indicates that prices did not fall with rising Internet usage for insurance types that were not covered by the comparison websites, nor did they in the period before the insurance sites came online. The results suggest that growth of the Internet has reduced term life prices by 8 to 15 percent and increased consumer surplus by $115-215 million per year and perhaps more. The results also show that the initial introduction of the Internet search sites is initially associated with an increase in price dispersion within demographic groups, but as the share of people using the technology rises further, dispersion falls.

A Mobile App to Aid Smoking Cessation: Preliminary Evaluation of SmokeFree28

Background: Little is known about the effectiveness of mobile apps in aiding smoking cessation or their validity for automated collection of data on smoking cessation outcomes. Objective: We conducted a preliminary evaluation of SF28 (SF28 is the name of the app, short for SmokeFree28)—an app aimed at helping smokers to be smoke-free for 28 days. / Methods: Data on sociodemographic characteristics, smoking history, number of logins, and abstinence at each login were uploaded to a server from SF28 between August 2012 and August 2013. Users were included if they were aged 16 years or over, smoked cigarettes at the time of registration, had set a quit date, and used the app at least once on or after their quit date. Their characteristics were compared with data from a representative sample of smokers trying to stop smoking in England. The percentage of users recording 28 days of abstinence was compared with a value of 15% estimated for unaided quitting. Correlations were assessed between recorded abstinence for 28 days and well-established abstinence predictors. / Results: A total of 1170 users met the inclusion criteria. Compared with smokers trying to quit in England, they had higher consumption, and were younger, more likely to be female, and had a non-manual rather than manual occupation. In total, 18.9% (95% CI 16.7-21.1) were recorded as being abstinent from smoking for 28 days or longer. The mean number of logins was 8.5 (SD 9.0). The proportion recording abstinence for 28 days or longer was higher in users who were older, in a non-manual occupation, and in those using a smoking cessation medication. / Conclusions: The recorded 28-day abstinence rates from the mobile app, SF28, suggest that it may help some smokers to stop smoking. Further evaluation by means of a randomized trial appears to be warranted

Do Information and Communication Technologies Empower Female Workers? Firm-Level Evidence from Viet Nam

This paper studies the effects of firms’ investments in information and communication technologies (ICT) on their demand for female and skilled workers. Using the gradual liberalization of the broadband Internet sector across provinces from 2006 to 2009 as a source of exogenous variation to identify the causal impacts of ICT, we find evidence from the country’s comprehensive enterprise survey data that firms’ adoption of broadband Internet and other related ICT increased their relative demand for female and college-educated workers. The effect of ICT on firms’ female employment is particularly strong among the college-educated workers, and is stronger in industries that are more dependent on highly manual and physical tasks. These results suggest that ICT can lower gender inequality in the labor market by shifting the labor demand from highly manual, routine tasks in which men have a comparative advantage toward more nonroutine, interactive tasks in which women hold a comparative advantage. However, the effect of ICT is weaker in industries relying more on complex and interactive tasks, suggesting that gender differences in education may have limited female labor supply for the most innovative industries that require highly technical skills to complement ICT

Couples’ places of meeting in late 20th century Britain: class, continuity and change

This article examines couples’ places or contexts of meeting in the second half of the 20th century in Great Britain, utilizing a typology developed by Bozon and Héran. The continuities are as striking as the changes, with social networks maintaining a consistent level of importance, but with trends towards meeting at places of education and work, and away from meeting in public places for drinking, eating or socializing. Rather than reflecting the impact of the rise of individualism and self-identity, these trends arguably reflect the changing importance of settings within people's daily lives, as may the recent growth in internet dating. Social class appears to have become more strongly related to the likelihood of meeting in ‘public’ settings, apparently more common in Britain than elsewhere. Achieved characteristics, especially occupational class, have a greater impact than parental class. Variations between place of meeting categories in the extent of occupational class homogamy appear to reflect levels of class homogeneity within settings more than the impact of either individualism or a homogamy norm. Regional variations in places of meeting highlight the ongoing importance of structural factors such as patterns of sociability or cultural norms

The impact of computer use, computer skills and computer use intensity: evidence from WERS 2004

Computers and ICT have changed the way we live and work. The latest WERS 2004 provides a snapshot of how using ICT at the workplace has changed our working lives. Various studies have suggested that the use of a computer at work boosted earnings by as much as 20%. Others suggest this reported impact is due to unobserved heterogeneity. Using excellent data from the WERS employer-employee matched data we compare OLS estimates with those from estimations which include controls for establishments, industrial sectors and occupations and use control function, treatment effects models and Instrumental Variable estimation. We show that the results of OLS estimation grossly overestimate the return to computer use but that including occupation controls, reduces the return to between 3-10%. We explore the return on different IT skills and also find a return to the intensity of computer use as measured by the number of tasks a computer is used for

What can we learn about financial access from U.S. immigrants?

We find that wealthier and more educated immigrants are more likely to make use of basic banking services and other formal financial services. Holding these (and other) factors constant, we find immigrants from countries with more effective institutions are more likely to have a relationship with a bank and use formal financial markets more extensively. Institutional quality appears to be an important factor in both determining both the breadth and the depth of financial access. It can explain approximately 17 percent of the country-of- origin-level variation in bank account usage among immigrants in the U.S., after other characteristics, including wealth, education and income, are controlled for. Institutional quality is even more important for explaining more extensive participation in financial markets, accounting for 27 percent of the analogous variation. We examine various measures of institutional effectiveness and are careful to control for unobserved individual characteristics, including specifications with country fixed-effects.Immigrants ; Financial institutions ; Payment systems

Occupation, Work-Related Exposure, and SARS-CoV-2 Transmission

Background: Early evidence from the Coronavirus Disease 2019 (COVID-19) pandemic suggests that workers differ in their risk of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infection and adverse outcomes according to their occupation. The direct contribution of occupation to these inequalities in unclear, given a lack of comprehensively-adjusted estimates. Potential work-related mechanisms underlying differential risk are also poorly understood. / Objectives: This thesis aimed to investigate (1) how SARS-CoV-2 infection risk and (2) features of work-related contact varied between occupations and over time, (3) whether work-related contact mediated the relationship between occupation and infection risk, (4) how vaccination uptake varied across occupations overall and according to vulnerability status and work-related exposure, and (5) how implementation and perception of pandemic mitigation methods varied between occupations and over time. / Methods: All analyses were conducted using data from Virus Watch, a community prospective cohort study in England and Wales. Infection outcomes and vaccination status were ascertained based on linkage, weekly participant self-report, and – for infection outcomes – virological and serological testing within the study. Measures were developed to investigate workplace contact patterns and mitigations. / Results: Frontline workers from several sectors had elevated infection risk compared to office-based professional occupations. Differential risk was most marked in early waves, and only teaching, education, and childcare workers demonstrated elevated risk across all waves. Groups with elevated infection risk also tended to demonstrate greater workplace contact and exposure and, often, lower reporting of mitigations. Work-related close contact was a mediator of infection risk. Occupational differences in vaccination uptake emerged primarily amongst non-vulnerable workers. Workers had a high level of agreement with most mitigations. / Conclusions: Occupation is an important factor influencing SARS-CoV-2 infection risk. Workers differed substantially in workplace exposure, vaccination uptake, and work-related mitigations. Evidence-based suggestions for research and practice are made regarding pandemic preparation and endemic SARS-CoV-2 transmission

Which Workers Gain Upon Adopting a Computer?

Using the Canadian Workplace and Employee Survey and controlling for individual and establishment fixed effects, we find that within a year of adopting a computer, the average worker earns a 3.6 percent higher wage than a similar worker who did not adopt a computer. Returns are even larger for managers and professionals, highly educated workers, and those with significant prior computer experience. Employees who use computer applications that require high cognitive skills earn the highest returns.Computer Use, Technology, Computer Applications