Microsoft’s upcoming update to Teams, allowing users to chat with anyone using just an email address, raises significant security concerns, particularly regarding phishing and malware risks. This feature, which enables external communication without prior validation, increases the potential for cybercriminals to exploit users by impersonating legitimate contacts, potentially leading to data breaches and compliance violations. Experts warn that the ease of interaction could inadvertently facilitate malware distribution, as compromised contacts may share infected files within the Teams environment. In light of these vulnerabilities, organizations are urged to disable the feature and implement robust security measures, emphasizing the need for a careful balance between innovation and security in collaborative tools.