A comprehensive security study conducted by Positive Technologies has unveiled alarming vulnerabilities in recycled SIM cards, exposing significant risks to mobile users’ digital security. The research reveals that 43% of examined phone numbers were previously used for various online service registrations, with 37% of associated accounts remaining active and potentially accessible to new number owners.
Research Scope and Critical Findings
The investigation analyzed 95 SIM cards across five major telecommunications providers, encompassing official, unofficial, and virtual numbers. Researchers tested access attempts to 38 popular online platforms, including e-commerce sites and social networks. The study confirmed unauthorized access to 57 active accounts belonging to previous number owners, highlighting a severe security gap in current mobile authentication practices.
Security Infrastructure Analysis
The research exposed critical weaknesses in telecom operators’ security measures. Only 20% of providers actively monitored and blocked suspicious activities on SIM cards. More concerning, two operators inadvertently exposed previous owners’ personal data during account recovery attempts, creating additional privacy vulnerabilities.
Technical Security Implications
The findings demonstrate fundamental flaws in SMS-based authentication systems, particularly affecting:
– Password recovery mechanisms
– Two-factor authentication processes
– Account verification procedures
– Personal data protection protocols
Enterprise Security Recommendations
Security professionals recommend implementing robust authentication frameworks that extend beyond SMS-based verification:
– Implement multi-factor authentication using authenticator apps
– Deploy biometric verification where applicable
– Establish strict number recycling policies
– Develop sophisticated account recovery procedures
Consumer Protection Guidelines
Users should adopt these essential security practices:
– Enable alternative authentication methods beyond SMS
– Implement authenticator apps for two-factor authentication
– Regularly review connected accounts and services
– Monitor account activity for unauthorized access
– Maintain control over critical phone numbers
The research underscores the urgent need for a security paradigm shift in mobile authentication systems. As cyber threats evolve, both service providers and users must adapt by implementing stronger authentication mechanisms and maintaining vigilant security practices. The findings suggest that the industry should move away from SMS-based authentication toward more secure alternatives while establishing stricter protocols for number recycling and account protection.
