I am security conscious when it comes to my devices and the Internet. I have a Windows 10 PC and an iMac, everyone in my house has an iPhone and my spouse and I have iPads.
My go to device is an Apple device because they are less likely a target based on the amount of malware written by Operating System and I enjoy their "walled garden" because it is a further step that I don't get stung by a bee.
As for privacy settings on the Macs, I use encryption only on computers that leave my house and use the firewall as well as gatekeeper set at it's default setting.
For my iDevices, I only allow apps to use my location if they 1) require it for some actual purpose (i.e. location for weather) and 2) provide an option to only use it while using the app.
On Facebook, I have everything hidden from anyone I do not add and remove my page from search engines. To add me a person must know my email address for Facebook as I have more than a few. Everything added to my wall by an another person must be authorized by me before it is shown.
I do not include information on where I live, my phone number, my age, or my sex unless it is required.
On forums I try not to pass too much information, my gender, ethnicity, education, and marital status are fine but I only use them where the context makes sense. This also allows for me to make non-biased statements about high tension issues without anyone saying oh mildocjr is such and such, of course he'd think that way, I like to come to issues with an open mind and
As I have only started caring about my online presence in the past year I'm sure there is still more information about me on the web than I talk about, but as I find it, I remove it.
When it comes to hacking, nothing is hack proof, however you can certainly reduce your risk of becoming compromised by education on security precautions.
I have a 4 year degree in Information Security with 8 years in the field.
**Added Windows 10***
For Windows, I keep the firewall set on and only allow apps to connect if it is necessary, in my case it is my gaming machine so I allow multiplayer games to connect but only through a private connection.
I do not allow the metro apps to connect or share my data, and I limit telemetry using ShutUp10.
I do turn on important data sharing items like Windows Defender submissions.
Windows 10 is a very resilient operating system when it comes to threats, but as I said above, education will protect you more than Antivirus software. I run with Windows Defender only, but I know that it doesn't save me from everything, my education helps mitigate the other risks. I go through every UAC prompt with a fine tooth comb before I continue on if I don't know why it popped up.
If I had to suggest an Antivirus, for gaming computers check out BitDefender, for average user, check out Avast, both provide great performance and protection, however these change from time to time. I get my results from
https://www.av-test.org. BitDefender box looks like a cool solution for people who have many computers on their network with less than 100 Mbps download speeds.
For all of my computers, if I download a file that is new to me and my AV doesn't scream at me, I typically upload the file to
https://virustotal.com/ to see if it's a safe file. Also depending on the functionality of certain admin tools such as produkey (from Nirsoft) AV will scream at you by the nature of the program, if you are using deep diving tools such as this, be aware that you may get false positives, but it is ultimately on you for whether or not you run the file.
I do not condone running files that trigger AV scans, and I am not affiliated with BitDefender, Avast, av-test.org, or virustotal.com. This is just my experience in what I have seen fit for my needs on working in home and enterprise environments (>250 devices).