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Purpose-Over the last few decades, corporate social responsibility (CSR) has received a large amount of attention in research and in practice. As a response to the growing awareness of and concern about social and environmental issues, an increasing number of companies are proactively publishing their CSR-related principles and activities. The overall research question of this study is derived from legitimacy theory and is aimed at elucidating the relationship between industry sector and CSR communication. The paper aims to discuss these issues. Design/methodology/approach-The empirical examination encompasses a sample that includes the annual reports of all German DAX-30 companies from 1998 to 2009. First, based on a content analysis, categories of CSR-related communication are defined. Second, these categories are used in a quantitative analysis with a longitudinal perspective to evaluate the hypothesis that companies in controversial industries communicate their CSR more intensely than companies in non-controversial industries. Findings-The qualitative study leads to a category system that accounts not only for CSR-related activities but also for CSR philosophies and motives as the normative basis of CSR communication. The quantitative results support the hypothesis that companies in controversial industries are more active in CSR communication than companies in non-controversial industries. Originality/value-Existing studies analysing CSR communication activity have been largely inconsistent and often use unsystematic approaches in choosing industries for comparison. Therefore, in this study, to overcome some of these deficiencies, a combination of quantitative and qualitative approaches addresses the concept of controversial industries.

Vicarious embarrassment is a negative emotion, which is experienced by an individual when others misbehave. People can feel vicariously embarrassed when observing other people's pratfalls or awkward appearance. For instance, vicarious embarrassment is elicited when watching reality TV or in service encounters where many other customers are present. However, the relevance of vicarious embarrassment in physical service environments has not yet been thoroughly analyzed in the context of service encounters. The objective of the present study is to close this research gap and to introduce the phenomenon of vicarious embarrassment to service research. The findings of 25 in-depth interviews indicate that vicariously embarrassing incidents mostly occur in service encounters and that these incidents are triggered by the violation of social norms in both customer-to-customer and customer-to-employee interactions. The authors of the present paper identified closeness of relationship, the service context, and parties involved as important situational variables influencing vicarious embarrassment and further emotional, cognitive, and behavioral consequences for the observing person. From a managerial point of view, the relevance of vicarious embarrassment in physical service environments is caused by negative spillover effects of the service experience, which lead to decreasing customer satisfaction, negative word-ofmouth and purchase intentions, and a negative impact on the overall image of the service provider.

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In this paper we present ZKlaims: a system that allows users to present attribute-based credentials in a privacypreserving way. We achieve a zero-knowledge property on the basis of Succinct Non-interactive Arguments of Knowledge (SNARKs). ZKlaims allow users to prove statements on credentials issued by trusted third parties. The credential contents are never revealed to the verifier as part of the proving process. Further, ZKlaims can be presented non-interactively, mitigating the need for interactive proofs between the user and the verifier. This allows ZKlaims to be exchanged via fully decentralized services and storages such as traditional peerto-peer networks based on distributed hash tables (DHTs) or even blockchains. To show this, we include a performance evaluation of ZKlaims and show how it can be integrated in decentralized identity provider services.