A token symbol is not unique. Record an asset as a pair: network plus the complete contract or mint address.
Copy the address from the project's official site and compare it with the explorer and DEX pair. Do not trust a search result, advertisement or icon alone.
On Solana, inspect the token program, supply and active authorities such as mint and freeze authority. Token-2022 can add extensions. An authority does not prove fraud, but it changes the risk profile.