Awareness of personal information protection is increasing following the SK Telecom USIM hacking incident. Experts advise that considerably reducing the hacking risk can be achieved through simple security measures that can be implemented immediately.
“1. Apply for a free USIM replacement.”
SK Telecom has been offering free USIM replacements at T World stores nationwide since April 28. To block hacking risks, it is essential to replace your USIM with a new one as soon as possible. Using the online reservation system can reduce waiting times.
“2. Subscribe to the USIM Protection Service.”
By subscribing to the USIM Protection Service, users go through separate identity verification when changing USIMs. This can be easily applied via the telecom device’s protection settings, effectively preventing USIM duplication or unauthorized changes.
“3. Switch from SMS-based two-step authentication to app-based methods.”
Most services rely on SMS verification. If possible, switch the two-step verification to app-based OTP (one-time password) modes for major financial, portal, and SNS services. Changing the authentication method can minimize damage even if USIM hacking occurs.
“4. Minimize unnecessary exposure of personal information.”
Leaving excessive personal information on email, SNS, or online registration sites provides hackers with attack resources. Unused site accounts should be withdrawn, and personal information should be kept to a minimum.
“5. Enable login alert functions for financial, portal, and SNS accounts.”
All major services should have login alert features activated. This allows immediate notifications if someone tries to access your account, serving as a crucial means to detect and respond to hacking early.
Experts emphasize that the basic security measures alone can significantly reduce damages from USIM hacking. Taking action immediately is the most sure-fire way to prevent losses.