TY  - JOUR
T1  - Self-Destructing Messenger Based on PII Detection
AU  - So, Ye-na 
AU  - Lee, Sun-woo 
JO  - The Journal of Korean Institute of Communications and Information Sciences
PY  - 2025
DA  - 2025/1/1
DO  - 10.7840/kics.2025.50.10.1603
KW  - Slef-Destructing Messenger
KW  - PII Detection
KW  - Messenger Framework
AB  - This study proposes a security-enhanced self-destructing messenger application to prevent personal information leakage. The proposed application classifies personal information into four sensitivity levels and utilizes real-time personal information detection to preemptively mitigate leakage risks. Depending on the sensitivity level, appropriate protection measures are automatically activated. Additionally, users can set access conditions (e.g., time limits and view counts) to control message access and viewing. This mechanism ensures that sensitive information is automatically deleted according to predefined conditions, minimizing the risk of exposure. Furthermore, the application employs AES encryption and Android KeyStore to securely store messages and enhance security by making message recovery difficult after deletion. Experimental results show that the detection accuracy for different sensitivity levels reached 96.25% and attempts to recover deleted messages using leading forensic tools proved unsuccessful.