Is ものもある a grammar pattern?


From
[here](https://www3.nhk.or.jp/news/easy/k10011571311000/k10011571311000.html):

> ウイルスが入らないようにするソフトの中には、このメールのウイルスを見つけることができない **もの** もあります。  
>  There is also a **feature** where you can't find these e-mail viruses in
> the software _whose purpose is_ to make sure that there are no virsues.

I'm unsure how to deal with もの in this sentence. I'm wondering whether
"feature" is a valid translation (it certainly isn't one I've seen before).

Or perhaps I should treat ...ものもある more generally as "it is also the case
that...". Would that work?

On a separate subject, I was surprised to see の中に used to describe the
relationship between the virus and the anti-virus software. When I read this
it sounds like the virus can't be found inside the anti-virus software rather
than that the anti-virus software can't find the virus. If I'd tried to write
this sentence I'd have written ソフトでは (with で having the "using/by means of"
meaning). Am I wrong?




I assume the English translation you provided is of your own creation.
Regardless, it's not quite accurate.

> ウイルスが入らないようにするソフトの中には、このメールのウイルスを見つけることができないものもあります

Is saying:

> Among software for preventing the entry of viruses, there are some which
> cannot find this mail virus.

The English here may sound stiff because I've gone for a very direct
translation, but the point is that `もの` is referring to instance(s) of
`ウイルスが入らないようにするソフト`.

> ウイルスが入らないようにするソフトの中には

Is pretty clearly `Among software for preventing the entry of viruses`, and
then

> このメールのウイルスを見つけることができないものもあります

Is, if we translate _super literally_ , something like `there are also things
which cannot find this mail virus`. However, since we know we're already
talking about antivirus software from the previous half of the sentence, it's
safe to say that these things are things which happen to be antivirus
software.

`もの` sees some uses like this where in English we would typically use words
like `those` or `some`, in this case for `there are those/some which cannot
find this mail virus`.




I assume the English translation you provided is of your own creation.
Regardless, it's not quite accurate.

> ウイルスが入らないようにするソフトの中には、このメールのウイルスを見つけることができないものもあります

Is saying:

> Among software for preventing the entry of viruses, there are some which
> cannot find this mail virus.

The English here may sound stiff because I've gone for a very direct
translation, but the point is that `もの` is referring to instance(s) of
`ウイルスが入らないようにするソフト`.

> ウイルスが入らないようにするソフトの中には

Is pretty clearly `Among software for preventing the entry of viruses`, and
then

> このメールのウイルスを見つけることができないものもあります

Is, if we translate _super literally_ , something like `there are also things
which cannot find this mail virus`. However, since we know we're already
talking about antivirus software from the previous half of the sentence, it's
safe to say that these things are things which happen to be antivirus
software.

`もの` sees some uses like this where in English we would typically use words
like `those` or `some`, in this case for `there are those/some which cannot
find this mail virus`.

