File Changes Detected; false positives

I use the free version of iThemes Security … thanks ??

I get an email every couple of days from your plugin; “File Changes Detected”

When I look at my site files I cannot see that any have changed.

The “details” of the log which you raise is just as follows:
<<<
added
removed
changed
memory = 4.06
>>>

Is there any way that I can suppress these memory related false positives?