Hi RejZoR,
Just scanned here to see what avast is collecting. Nothing out of the ordinary, the common google analytics as everybody does,
which is secure while the <<cookie sets the Secure flag to prevent its leaking if any of the pages loads mixed content >>
This however could be added to the settings for more security:
<<The page loads 3 third-party JavaScript files and 6 CSS but does not employ Sub-Resource Integrity to prevent breach if a third-party CDN is compromised>>. (as we do not want another data-breach, do we?

).
See what the scan returned for the forums:
https://webcookies.org/cookies/forum.avast.com/9115320TLS score: C-Grade, capped due to 64-bit cipher (IDEA, RC2, DES or 3DES)
polonus (volunteer 3rd party cold recon website security analyst and website error-hunter)
P.S. For me they do not have to measure my site engagement for the forum site,
it has been a steady full one hundred for well over thirteen years.

Re:
https://www.chromium.org/developers/design-documents/site-engagementDamian