Is it true that traditional security threats are still the mainstream?

Correct. Hegemonism and power politics, as traditional security threats, still exist and present new characteristics. After the end of the Cold War, non-traditional security threats have emerged in the international community, including economic turmoil, financial risks, deterioration of the ecological environment, cyber attacks, resource crisis, terrorism, arms proliferation, disease spread, transnational crime, drug smuggling, illegal immigration, piracy, money laundering and so on.