Windows already has a Firewall built in, so there's no need for MSE, produced by the same corporation (MS) to be a full security suite.
There is also realtime protection with MSE. If you go into the settings, you'll see & have options to scan email attachments, USB Flash drives/other external media, behavior monitoring & web protection.
However, it's a good idea to run a second app, such as Malwarebytes, to catch any nasties that MSE may miss. No AV is perfect 100% of the time, paid or free. If there were such an app, then we'd all be using it, & be glad to pay for it.
Why is everyone else reporting MSE as 2.0? Mine is 4.something, but it's on another computer, so I don't have quick access to it. OK, here's why, I'm running the public beta of MSE. I'll say this, it's faster, & catches more than the current stable version of MSE. Get it here:
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