Just like driving a car, sooner or later you may have an accident no matter how secure you are. Below are clues to help figure out if you have been hacked and, if so, what to do. The sooner you identify something bad has happened, the more likely you can fix the problem
If you suspect you have been hacked, the sooner you act the better. If the hack is work related, do not try to fix the problem yourself; instead, report it immediately. If it is a personal system or account that has been hacked, here are some steps you can take:
Dr. Johannes Ullrich (@johullrich) is the Dean of Research for the SANS Technology Institute, the
Director of the SANS Internet Storm Center, and a SANS Fellow. He created the DShield collaborative
sensor network and hosts the Internet Storm Center’s daily network security news podcast.
Password Managers: https://www.sans.org/u/JGZ
What Is Malware: https://www.sans.org/u/JH4
Credit Freeze: https://krebsonsecurity.com/2018/09/credit-freezes-are-free-let-the-ice-age-begin/