The BADGERS 2011 workshop aimed to encourage the development of large-scale security-related data collection and analysis initiatives. It provided a platform to describe existing real-world, large-scale datasets and share the experiences gained from analyzing them. The first edition of the workshop presented novel approaches to collecting and studying such datasets. By highlighting existing solutions, the workshop aimed to promote better data and knowledge sharing. The workshop received 15 papers (including three short papers) out of 21 submissions, with all papers receiving at least three reviews. The program committee and external reviewers were thanked for their contributions. The accepted papers addressed various topics, including testbeds for studying attacks, large-scale data collection systems, and legal issues related to data collection and sharing. The study on information security and e-trust in Spanish households was conducted by INTECO, analyzing the security and trust of users through quantitative and qualitative data. The study involved over 3,000 households and provided insights into security habits, incidents, and perceptions. The methodology included a dedicated online panel with software to scan computers and quarterly surveys to assess user perceptions. The study revealed that a significant percentage of users had security incidents and that trust in the Internet was high. The study also highlighted the importance of security measures and user behavior in reducing the risk of security incidents. The paper on the engineering and operation of a large-scale embedded device vulnerability scanner described the process of scanning the Internet for vulnerable devices, identifying them through default credentials, and verifying their vulnerability. The study faced technical, organizational, and social challenges, including scalability, security, and data management. The scanner infrastructure was redesigned multiple times to improve performance and reliability. The study emphasized the importance of security measures and user behavior in reducing the risk of security incidents. The findings highlighted the need for better security practices and the role of the government in ensuring Internet security. The study concluded that security is not just about technology but also about user behavior and awareness.The BADGERS 2011 workshop aimed to encourage the development of large-scale security-related data collection and analysis initiatives. It provided a platform to describe existing real-world, large-scale datasets and share the experiences gained from analyzing them. The first edition of the workshop presented novel approaches to collecting and studying such datasets. By highlighting existing solutions, the workshop aimed to promote better data and knowledge sharing. The workshop received 15 papers (including three short papers) out of 21 submissions, with all papers receiving at least three reviews. The program committee and external reviewers were thanked for their contributions. The accepted papers addressed various topics, including testbeds for studying attacks, large-scale data collection systems, and legal issues related to data collection and sharing. The study on information security and e-trust in Spanish households was conducted by INTECO, analyzing the security and trust of users through quantitative and qualitative data. The study involved over 3,000 households and provided insights into security habits, incidents, and perceptions. The methodology included a dedicated online panel with software to scan computers and quarterly surveys to assess user perceptions. The study revealed that a significant percentage of users had security incidents and that trust in the Internet was high. The study also highlighted the importance of security measures and user behavior in reducing the risk of security incidents. The paper on the engineering and operation of a large-scale embedded device vulnerability scanner described the process of scanning the Internet for vulnerable devices, identifying them through default credentials, and verifying their vulnerability. The study faced technical, organizational, and social challenges, including scalability, security, and data management. The scanner infrastructure was redesigned multiple times to improve performance and reliability. The study emphasized the importance of security measures and user behavior in reducing the risk of security incidents. The findings highlighted the need for better security practices and the role of the government in ensuring Internet security. The study concluded that security is not just about technology but also about user behavior and awareness.