In 2025, cell phone numbers are critical for online services, enabling activities like password resets and two-factor authentication. A stolen phone number can allow hackers to impersonate individuals, accessing online accounts and sensitive data. SIM swapping, a technique where a hacker takes over a victim's phone number by deceiving carrier representatives, exposes users to significant risks. Victims may notice a loss of cell service without warning. Protecting phone numbers from such attacks is increasingly crucial, given the exploitation of security weaknesses within cell providers' systems.
SIM swapping attacks usually happen when a malicious hacker calls up a cell carrier impersonating a specific customer. This hacker would use information they found online.
With your phone number, a hacker can start gaining access to your online accounts, and even trick automated systems into thinking they are you.
SIM swap attacks exploit a weakness in the security controls within a cell providers' internal systems that let support representatives make changes without getting permission.
A hijacked phone number can sometimes be used to access a company's network as if they were that employee, allowing access to sensitive files and data.
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