I've been experiencing this problem for a week or more, I hope it's o.k. to address it here:
I have Windows 7; I use Firefox, but tried Chrome and had same problem:
Nearly every site I go to says the connection is not secure; on sites that require logins, they say login info might be compromised.
Considering how many sites these issues appear on, the problem can't be from the websites.
I have the usual anti-virus program, did a couple of scans for malware etc., cleared cookies cache and so forth, and even did a full diskcheck. No problems were found.
Might anybody know what the problem could be?