The trauma of sexual assault can leave physical, emotional, and psychological wounds. Corrupt practices are still present in our society. This study introduces a smart system, namely ‘SEcurity GIrl’ (SEGI), which is integrated into a woman’s bra. The device uses impact and acceleration sensors to recognize sexual harassment behaviors and send warnings via communication techniques to the victim’s relatives for support. It can assist in alerting relatives about the dangers women and girls face, including when they are in active or passive situations. Notifications include calling and texting their Global Positioning System (GPS) location with 98% accuracy. Moreover, relatives can determine a new location if the attacker deliberately pulls the victim to another location. Furthermore, the device can generate a virtual fence to help parents receive warnings for their girls within a radius of 500 m. The system is deployed with low-cost, easy-to-use, simple message syntax and is an innovative solution for women’s safety, especially teenagers.