GSM definition

GSM

(also Global System for Mobile Communications)

GSM, short for Global System for Mobile communications, is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation (2G) digital cellular networks used by mobile devices. As a result, it became the de facto global standard for mobile communications — with over 90% market share, operating in over 210 countries and territories.

GSM examples

Mobile communications: GSM provides basic voice call and text messaging services alongside data services for browsing, emails, and other internet-based applications.
Roaming: GSM enables international roaming, allowing users to access mobile services when traveling to different countries.
Data signing. KDFs generate signing keys, and users utilize these keys to sign data.
User authentication. KDFs generate authentication keys that authenticate users.

Advantages and disadvantages of GSM

Pros:

Wide adoption: Being a global standard, GSM offers widespread coverage and international roaming.
Standardized: It ensures compatibility between the various network elements and services.

Cons:

Security: 2G GSM has known security vulnerabilities, which makes it less secure than 3G and 4G networks.
Speed: It offers slower data transfer rates than newer mobile network technologies like 3G, 4G, or 5G.

Using GSM

Be aware that using GSM for internet access won’t provide the same security measures as using a secure Wi-Fi network or a VPN, and it’s susceptible to certain types of cyberattacks.
If security is a concern, consider using a secure service like a VPN when transmitting sensitive data over a mobile network.