Managing passwords securely and conveniently is still an open problem for many users. Existing research has examined users' password management strategies and identified pain points, such as security concerns, leading to insecure practices. We investigate how Blind and Low-Vision (BLV) users tackle this problem and how password managers can assist them. This paper presents the results of a qualitative interview study with N = 33 BLV participants. We found that all participants utilize password managers to some extent, which they perceive as fairly accessible. However, the adoption is mainly driven by the convenience of storing and retrieving passwords. The security advantages -- generating strong, random passwords -- were avoided mainly due to the absence of practical accessibility. Password managers do not adhere to BLV users' underlying needs for agency, which stem from experiences with inaccessible software and vendors who deprioritize accessibility issues. Underutilization of password managers leads BLV users to adopt insecure practices, such as reusing predictable passwords or resorting to 'security through obscurity' by writing important credentials in braille. We conclude our analysis by discussing the need to implement practical accessibility and usability improvements for password managers as a way of establishing trust and secure practices while maintaining BLV users' agency.

Key management is an integral part of using distributed ledger technology (DLT). Previous work has primarily focused on key management for single-user scenarios on Bitcoin. Over the last decade, DLT has evolved to commercial and financial sectors; for example, a new German law allows the trading of a variety of financial securities via DLT. Instead of a single-user paradigm, financial institutions follow a multi-user paradigm. Combining multi-user key management with single-user key management solutions leads to unique challenges with usability and security. We extend current research through a two-stage qualitative interview study with 13 finance professionals. We investigate how the technical reality contrasts with perceptions of key management practices in corporate financial organizations. Our interdisciplinary study shows, among other things, that DLT does not meet real-world requirements in this particular domain. Moreover, it introduces additional challenges in terms of authentication and auditing. Our findings suggest that corporate financial institutions strongly support the adoption of blockchain solutions. However, to comply with regulatory and operational requirements, they face additional usability and security challenges, e.g., authentication and access control. Better mechanisms or novel design approaches are required to cover professional environments. This includes how multiple users can access the same assets and approve joint transactions.