The cybersecurity landscape in the United States has rapidly evolved, marked by risk and novel threats (Georgescu, 2021; Siraj et al., 2021). Today, security mindsets are "widely accepted in the computer security community as … essential … for successful cybersecurity practice" (Peterson, 2021, para. 1), valuable to aspiring cybersecurity professionals and non-technical end-users (Dutton, 2017; Pournaghshband, 2013). Buoyed by the notion that there might be "particularly strong" (Foster-Marks, 2021, para. 41) parallels between learning computing basics and second languages (L2), this study aimed to illuminate possibilities for leveraging L2 learning materials to introduce cybersecurity fundamentals to K12+ L2 learners. A qualitative content analysis supported an investigation of whether posited theoretical connections between security mindsets and L2 learning could be identified in existing L2 content. This analysis was extended with imaginative variation to consider how to exploit such content for cybersecurity education. Specifically, I examined English, French, and Spanish L2 resources to identify (a) content associated with analytical, creative, practical, and situational capacities germane to security thinking and (b) content that could be linked to basic cybersecurity domain knowledge and concepts. The inquiry was guided by Hamman and Hopkinson's (2016) conception of Sternberg's (1988) Triarchic Theory of Intelligence and notions of Situational Awareness (Endsley, 1995; Horneman, 2019). While security mindset themes were not found to be explicitly named in the analyzed L2 content, the analysis revealed repeated examples of content that could engage L2 learners with security mindset fundamentals and/or serve as a platform for introducing security themes. These findings suggest opportunities for flexible and scalable implementation and are relevant for materials designers and L2 teachers seeking to lay important groundwork in meeting the challenges of an ever-evolving cybersecurity landscape. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]