[tech] Didn't see a post about this on my timeline so if you are using the Chrome extensions Nano Adblock, Nano Defender, or The Great Suspender, they're malware now and you want to uninstall them.
tl;dr: The open-source projects were sold to malicious third parties.
Nano alternative: uBlock Origin, the original project Nano was forked from;
TGS alternative: I've seen Auto Tab Discard and Tiny Suspender rec'd.
IMPORTANT NOTE: All of your suspended tabs will disappear when you delete TGS! Select the "unsuspend all tabs" option in TGS, then "bookmark all tabs" in Chrome to a new bookmark folder (repeat with each Chrome window if more than one is open), then uninstall TGS and install Tiny Suspender. You can then select the relevant bookmarks folder in Bookmark Manager and "open all bookmarks" to get your tabs back.
Also, Nano can hijack your Instagram account to like posts, so you might want to change your password and clear your cookies.
And check your Instagram likes, of course.