whenever i try to open a website I get an error message saying
www.flybuys.com.au uses an invalid security certificate. The certificate is not trusted because the issuer certificate has expired. (Error code: sec_error_expired_issuer_certificate)
quite a few sites are saying similar, has the computer been hacked as we cant get on to do internet banking either it wont let him. google is another one we cant get to open. Have run a scan with AVG and malwarebytes, scared weve been hacked!