Ok,i got to try this extension. Installing was easy, getting API key was super-easy and fast. First thing i noticed - they give you "trial" for one month with 30 scans total. And that "month" always ends according to calendar, so if you try this extension at end of month you will get just few days to try it. After that its 5$ per month.
But thats is not problem, really.
Main problem is strange results - i mane scat, it taken 10-15 minutes and i got report that "8400 files scanned, all clean, but few is suspicious". Thats ok.
Next day, however, i started to get TONS of mails with "your site is HACKED". These mails all pointed to same file (part of one certain 3rd-party component), which, after visual review is perfectly ok. Mail i received was pointing to scan report with "null" id and repeated scan again said its all clean, but, this time its marked WHOLE cache as suspicious.
Somehow it feels to me that main purpose is to make it sound scary or something and force customer to get subscription, but it only a guess.