Telegram has become one of the most popular messaging platforms worldwide, offering a blend of privacy and functionality for millions. Yet, even apps with strong security measures can become vulnerable when underlying telecommunications protocols are at risk. One significant vulnerability is related to Telegram hacking via SS7, a topic that has raised growing concerns among privacy advocates and users alike.
SS7, short for Signaling System No. 7, is a network protocol used globally to coordinate calls, messages, and other services across telecom networks. While it was designed decades ago, its security flaws have only recently come under increased scrutiny.
What is SS7 and Why Does It Matter?
To understand why Telegram hacking through SS7 is possible, it’s important to grasp what SS7 actually does. SS7 is a group of protocols responsible for handling the exchange of information between mobile networks. It allows different operators to route calls, send text messages, and deliver critical subscriber details.
The significance of SS7 comes from its role in allowing seamless communication and number portability between different carriers and countries. However, the trust-based design of SS7, conceived long before the internet era, means that once someone gains access to SS7, they can potentially intercept messages or reroute communications.
How Telegram Can Be Exploited Using SS7
Telegram uses phone numbers as a crucial method for logging in or verifying users. When someone tries to log into Telegram from a new device, a verification code is sent via SMS to the registered phone number. This is where weaknesses in SS7 can be exploited by attackers with access to an SS7 Server.
An attacker can manipulate the SS7 protocol to trick a telecom network into believing the target’s phone number is linked to a different SIM card. As a result, any SMS verification codes sent to the original user—such as the ones for Telegram login—get redirected to the attacker’s device instead.
Once the attacker receives the code, they can complete the login process on a new device. This unauthorized access gives them visibility into private messages and groups, and control over the account’s settings.
The Broader Implications of SS7 Exploitation
Telegram hacking via SS7 is not just a theoretical threat. In documented cases, corporate executives, journalists, and activists have fallen victim to breaches stemming from SS7 vulnerabilities. The appeal of SS7-based hacking lies in its stealth; the user often remains unaware that messages have been intercepted or that their account was compromised.
Moreover, SS7 vulnerabilities are not limited to one country or region. Since these networks communicate globally and trust each other’s requests, security lapses in one part of the world can have wider implications. As a result, attackers with the right tools can target users across borders, making this a global concern.
For individuals and organizations relying heavily on Telegram for sensitive communication, awareness of this threat is important. Although end-to-end encryption protects Telegram’s Secret Chats, regular chat messages and account authentication can still be compromised through SS7.
Criminal and Surveillance Activities
Not all actors exploiting SS7 to hack Telegram accounts are individual hackers. In some instances, criminal organizations use this method for blackmail or fraud, targeting high-profile individuals. Furthermore, there have been allegations that certain state agencies employ SS7-based attacks to monitor dissidents or journalists.
Such incidents have added urgency to international discussions about modernizing telecommunications security. While app developers can improve their own security, the root access problem posed by SS7 requires a much broader industry response.
Conclusion
While Telegram remains a staple for secure messaging, the risks presented by SS7 demonstrate that even robust application-level security is only as strong as the systems it relies upon. Telegram hacking via SS7 highlights the need for both users and telecommunication companies to stay vigilant.
For now, using multi-factor authentication and monitoring account activity are steps users can take to reduce risk. Ultimately, updates at the infrastructure and regulatory level will be crucial to ensuring secure digital communication for all.