Attackers frequently place decoy calls from foreign or masked numbers—sometimes using Bangladeshi dialing codes—to distract victims and increase the likelihood that the verification call goes unanswered. Security experts have identified a surge in account hijacking incidents, particularly in Israel, where attackers leverage voicemail systems to intercept authentication codes. Once attackers obtain the verification code from voicemail, they gain complete control of the victim’s Telegram account. Ynetnews security analysts noted that attackers often employ diversionary tactics to ensure verification calls go unanswered. Security researchers emphasize that changing default voicemail PINs and enabling Telegram’s two-step verification provide effective protection against these attacks. Cyber Security News is a Dedicated News Platform For Cyber News, Cyber Attack News, Hacking News & Vulnerability Analysis. A sophisticated attack campaign targeting Telegram users has emerged, with cybercriminals exploiting a commonly overlooked vulnerability: default voicemail passwords. When attackers select the voice call verification option instead of SMS, Telegram places an automated call with the verification code. With years of experience under his belt in Cyber Security, he is covering Cyber Security News, technology and other news. Tushar is a Cyber security content editor with a passion for creating captivating and informative content. Initially, perpetrators attempt to log into a victim’s Telegram account, triggering the app’s authentication process. Rather than employing complex malware, attackers focus on exploiting authentication mechanisms through social engineering.
This Cyber News was published on cybersecuritynews.com. Publication date: Thu, 03 Apr 2025 10:40:16 +0000