B.E. / B.Tech

With 90 percentile in MHT-CET, it is difficult to get admission in Computer Science and Engineering at Government College of Engineering, Nagpur.

The cutoff for CSE is usually around 94 to 96 percentile for general category.

You may have better chances in other branches like Electrical or Electronics, but not likely for CSE.

No B.E Cyber security course is not available in Kongu Engineering college 

It offers only following courses 

1 B.E in computer Science engineering 

2 B.Tech in artificial intelligence and Data science 

3 B.Tech in Artificial intelligence and machine learning 

4 B.E in electrical and electronics engineering 

5 B.Tech in information technology 

As you have scored 80.5 percent which less than the 90 percent so, you may not get the lateral entry admission in Sri ShivaSubramaniam College i.e (SSN college of Engineering) which offers 2nd year to 4 th year course  

As resident of Chennai you apply through TNEA counciling process for lateral entry

To apply for a B.E./B.Tech in Anjuman College of Engineering and Technology (ACET), Nagpur after completing a diploma in Computer Engineering, you need to apply for lateral entry admission to the second year of the B.E./B.Tech program. This typically involves registering and applying online, and admission is often based on your diploma marks or a combination of diploma and entrance exam scores. 

Candidates need to pass DCET for lateral entry to BE course of RV Institute of Technology and Management. The institute offers BE (LE) in Computer Science, Electronics & Communication and Information Science Engineering. The cutoff for General category candidates was between 611 and 1075. ECE was the most competitive specialisation with 611 rank. Students must secure rank under 1000 for a seat in BE (LE) programme.