I think apple is more hackers friendly

if you think your Apple ID has been compromised see this link:

https://support.apple.com/en-us/HT204145

You may wish to change your Apple ID log/pass with a complex password you don’t use for anywhere else.

If you share the same or similar log/pass combo with another service (e.g. Yahoo, Twitter, Facebook, etc.) and that service is compromised then anyone with that information simply needs to try the same combo elsewhere

To change your Apple ID password see this link:

https://support.apple.com/en-ca/KM205079

To Change the Email associated with your Apple ID see this link:

https://support.apple.com/en-us/HT202667

To change the payment information in your Apple ID see this link:

https://support.apple.com/en-us/HT201266

To Enable two factor authentication see this link:

Availability of two-factor authentication for Apple ID - Apple Support

Modern Apple devices are virtually impossible to hack (unless your iPhone is jailbroken). However, since you have an iPhone 3GS and it is on iOS 6.1, it may be less sophisticated due to its age but if you could explain what you mean by hacked, I could help further.