hi lightspeed,
I've been doing AV stuff since 1980, and in my opinion the answer is "No" to your defender questions. It's certainly not more capable than earlier versions; virus-writers still haven't time to write W10 specific viruses yet; so there's no proof of protection for the most part unless you are "trolling" for viruses as I do, to report them, or using "honeypots".
Back in 2005, the average time that any computer with no AV or security software of any kind on it could survive as soon as it was connected to the Internet was about 8 seconds. In 2015, now 10 years later; this is reported to be about 4 seconds; infection vector rate twice as high reported globally. This is well documented.
We have wildly varying reports from different sources that say that a W10 computer with defender can last from 10 seconds to 10 hours before initial connection of the computer to an Internet connection (broadband). So, defender does only a slightly better job than a wholly unprotected computer does at 4 seconds. Certainly not the protection I want on my very expensive computer investment!
And no, Microsoft's defender is not ready, nor will ever be ready to compete with the "big boys" of security software (Norton, McAfee, F-prot, Avast, TrendMicro, Panda). If they ever did it would kill a 6-billion dollar a year niche industry when Microsoft agreed to stay and not play in this marketplace all the way back in Win3.1.
With regard to Kaspersky, don't know what reports you are reading; but your information is very wrong on Kaspersky. Their stuff is terrible, and hasn't rated on anyone's top AV independent testing report in 10 years plus! The only way Kaspersky gets their name in the top 3 is by bribing the e-zine or computer magagine editor or writers to do this! I've seen laptops come in less than 1 year old running Kaspersky Internet Security (their top of the line product) with massive virus infections of over 600,000 viruses. That certainly is not a product I want protecting my computer. I've been removing Kaspersky from every computer I see in my repair business as well as corporate networks since their products appeared here 15 yrs. ago.
The MBAM is high-quality stuff, you can keep that; but bottom line you are attempting to use Free AV products to protect your computer. This is OK for home users, but if you use your computer for work or college, you really need
PAID protection from the "big-boys" to keep your computer safe; regardless of what version of windows you are running.
Bottom-line: your AV protection is only as good as what you pay for! IMO the only good free AV left is Avast; all the rest charge you or are worthless.
Hope that gives you some perspective.
By the way, it might be useful to know that Kaspersky has yet to land a contract for their AV software from any Fortune500 company--ever!! Kaspersky gives their programs for free to these companies, and time and time again reject them! Can you think of a reason why that is??
Hope that provides some insight.
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