Can bitcoin considered to be a security?

[entebah]

at least bitcoin is safer than real money, because bitcoin is in a digital system that risk less loss, maybe bitcoin is not safe if there is a hacker who picks it up

Security is in you, that's bicoin. you can take care of it then you can also give a chance to the thief to take your bitcoin.
All you have to do is secure the wallet and invest properly and reliably. suppose trade in a large and very secure exchange. it is a way to secure your assets.

[spinno]

It can be seen as a security currency. Saving your money in bitcoin, cashless policy, easy transfers and ever ready to deliver.

[mark_salcedo618]

I would like to whether bitcoin is equivalent to any security in terms of investment? If yes. How it could be considered as a security? What are the measures? What are the main drawbacks of a bitcoin?

It is 100% sure safe because whenever you transact. There will be record provided.
You just need to secure your wallet and do not let anyone know your key/password.