As cross-border transactions are becoming increasingly common, businesses and individuals are turning to electronic means to save time and costs. Instead of waiting for documents to be transported by courier around the globe, the relevant parties can finalize and execute their contract in a matter of seconds, in the comfort of their own base. The steady rise of globalization, coupled with the social distancing protocol of COVID-19, is further accelerating the popularity of electronic signatures in 2020. Their growing prevalence brings forth questions about their legitimacy, effectiveness, and security. Fortunately, the technological advancement behind their conception and the maturing legal infrastructure built around electronic sign-offs are attesting to their positive values: electronic execution of contracts is a sufficient alternative to, if not a replacement of, in-person procedures. Legal Infrastructure In order for electronic signatures to be widely used, they have to be deemed legally valid under the relevant jurisdiction. As early as the late 1990s, legislative bodies around the world have come to grant electronic signatures the same legal status as handwritten signatures, encouraging businesses to adopt the paperless practice. In 2020, electronic signatures are legally recognized in over 60 countries. In Vietnam, electronic signatures have been given legal effect and enforceability since 2005. According to Article 21.1, Law on E-transactions 2005, “an [electronic] signature is established in the form of words, letters, numbers, symbols, sound, or other forms by electronic means, logically attached with or associated with a data message, which has an ability to certify the person who signs the data message and to certify the approval of such person to the content of the signed data...