Persons with visual impairments have often been a soft target for cybercriminals, and they are more susceptible to cyber attacks in the digital environment. The attacks, as mentioned above, are because they are visually/aurally exposed to the other sighted users. Visually impaired computer users suffer from secrecy and privacy issues on digital platforms. This paper proposes a mechanism termed BEEMA(Braille adapted Enhanced PIN Entry Mechanism using Arrow keys) to help people with visual impairments. We have studied various security attacks on visually impaired users and proposed a mechanism named BEEMA that provides a rigid braille-adapted text input for people with visual impairments. This mechanism allows users to enter a PIN number on any website that requires a PIN number. The proposed model is implemented as a browser plugin which can be accessed easily. We have conducted sessions with visually impaired users to study the mechanism's performance. The proposed BEEMA model has shown encouraging results in the user study. Resilience of BEEMA against various attacks is also explored in this paper.

翻译：[摘要] 视障人士常成为网络犯罪分子的软目标，在数字环境中更容易遭受网络攻击。上述攻击之所以发生，是因为他们在视觉/听觉上暴露于其他正常视力用户面前。视障电脑用户在数字平台上面临保密性和隐私性问题。本文提出一种名为BEEMA（基于方向键适配布莱叶盲文的增强型PIN输入机制）的方法，旨在帮助视障人士。我们研究了针对视障用户的各种安全攻击，并提出名为BEEMA的机制，为视障人士提供了一种刚性的、适配盲文的文本输入方式。该机制允许用户在需要输入PIN码的任何网站上输入PIN码。所提模型以浏览器插件形式实现，便于访问。我们与视障用户开展试验以评估该机制的性能。用户研究显示，所提出的BEEMA模型取得了令人鼓舞的结果。本文还探讨了BEEMA对各种攻击的抵御能力。