SS7 Attacks Step by Step

By John Johnson

Introduction

Have you ever heard of SS7 attacks? If you haven’t, you should. It’s a type of cyber attack that targets the global telecommunications network. It’s a serious threat that affects millions of people every year. In this article, I will explain what SS7 attacks are, how they work, and what you can do to protect yourself.

Curiosities, Top Statistics, Facts, and Interesting Information

SS7 stands for Signaling System 7 and is used to exchange information between different telecommunications networks.
SS7 attacks can intercept phone calls, text messages, and location data.
SS7 attacks can be carried out by anyone with access to the SS7 network, including hackers, governments, and telecom employees.
According to a survey conducted by the British security firm Positive Technologies, 100% of the telecom networks they tested were vulnerable to SS7 attacks.
In 2017, hackers used SS7 attacks to steal money from German bank accounts.
In 2023, researchers from the University of Copenhagen demonstrated how SS7 attacks could be used to track the location of any mobile phone in the world.

What are SS7 Attacks?

SS7 attacks are a type of cyber attack that target the global telecommunications network. SS7 is used to exchange information between different telecom networks, such as phone calls, text messages, and location data. SS7 attacks exploit vulnerabilities in the SS7 network to intercept and manipulate this information. This can be used for various malicious purposes, such as stealing sensitive information, tracking someone’s location, or intercepting phone calls and text messages.

How do SS7 Attacks Work?

There are several ways that SS7 attacks can be carried out:

Interception: The attacker intercepts the communication between two telecom networks and eavesdrops on the conversation.
Location Tracking: The attacker uses SS7 to track the location of a mobile phone by intercepting the signals between the phone and the nearest cell tower.
Call and SMS Interception: The attacker intercepts phone calls and text messages by exploiting vulnerabilities in the SS7 network.
Denial of Service: The attacker floods the SS7 network with fake signaling messages, causing it to crash or become unavailable.

How to Protect Yourself from SS7 Attacks

Here are some steps you can take to protect yourself from SS7 attacks:

Use end-to-end encryption: Apps like Signal and WhatsApp use end-to-end encryption to protect your messages from interception.
Disable roaming: Roaming makes you more vulnerable to SS7 attacks, so it’s best to disable it if you’re not using it.
Use a virtual private network (VPN): A VPN encrypts your internet traffic and makes it harder for attackers to intercept your data.
Keep your software up-to-date: Software updates often include security patches that can protect you from SS7 attacks.
Use two-factor authentication: Two-factor authentication adds an extra layer of security to your accounts and makes it harder for attackers to access them.

FAQs

What is SS7?

SS7 stands for Signaling System 7 and is used to exchange information between different telecommunications networks.

What can SS7 attacks do?

SS7 attacks can intercept phone calls, text messages, and location data. They can also be used for various malicious purposes, such as stealing sensitive information, tracking someone’s location, or intercepting phone calls and text messages.

Who can carry out SS7 attacks?

Anyone with access to the SS7 network can carry out SS7 attacks, including hackers, governments, and telecom employees.

How can I protect myself from SS7 attacks?

You can protect yourself from SS7 attacks by using end-to-end encryption, disabling roaming, using a virtual private network (VPN), keeping your software up-to-date, and using two-factor authentication.