Few research topics
1. robot to rescue child from open bore well
2. low cost home security system
3. early prediction system using machine language
4. Prediction of heart attack, rain , cancer, stock market using ml,ai, bigdata, cloud computing

https://www.engpaper.com/rain-fall-prediction-in-machine-learning.htm
https://www.engpaper.com/health/heart-disease-prediction-machine-learning.html
https://www.engpaper.com/weather-prediction-papers.htm

Network security problems you can work
hybrid cryptography technique for improving network security

Analysis of Network Security Issue and Its Attack and Defence

Network Security and Privacy Issue in E-Healthcare

IoT Network Security

https://www.engpaper.com/cse/network-security-2020.html

https://www.engpaper.com/network-security-2019.htm