List of attacks -

• Denial of service (DOS),
• Distributed Denial of Service (DDOS),
• Sink Hole,
• False Data injection

Countermeasures - Intrusion detection, Firewall/ACL

You can see https://tetcos.com/file-exchange.html. This has a list of projects involving different attacks.

Is it possible to study these attacks without having make these code modifications? It is difficult for newcomers.

Thanks. From reading the documentation I see that everything is simulated in the same system. Is it possible to also introduce a real attack like a DOS attack using a tool like slowHTTPTest

Yes, this is possible. See https://support.tetcos.com/support/solutions/articles/14000130254-how-to-perform-slowhttptest-dos-attack-through-netsim-emulator-

How can we simulate a false data injection attack? Please provide some details.

Yes, you can simulate a false data injection attack. See https://www.tetcos.com/pdf/v13.3/False-Data-Injection-Attack_NetSim-v13.3.pdf for an example. It covers both payload modification and header modification. Also, my understanding is that attack simulating an attack is different from emulating an attack. In simulation everything is virtual but in emulation, you interact with real devices. In NetSim both simulation and emulation are possible. See this discussion https://www.researchgate.net/post/The_difference_between_simulation_and_emulation_and_how_to_effectively_use_NetSim_emulator

Is there any example of simulating a cyber attack on the electric power grid?

Nikhil Chowki This link https://www.tetcos.com/cyber-attack-electric-power-grid.html might have the information you ask for.