 This research paper examined the security features of popular VoIP applications, including KakaoTalk, Telegram, Facebook Messenger, and WhatsApp. The authors found that none of these applications provided adequate protection against password decryption, eavesdropping, or other malicious activities. Additionally, they discovered that only one application, Facebook Messenger, offered any form of password encryption. This article was authored by Nur Karani Kamaruddin, Nur Syafiq Abizmi, Nurul Hidayah Ahmad Zukri, and others.