Early signs.
ON A DEVICE
Unexpected slowness Programs you did not install Security software disabled Unusual network activity Settings changed
ON AN ACCOUNT
Logins you did not make Password reset messages you did not request Messages sent in your name Rules or forwarding you did not create Changes to recovery details
IN THE BUSINESS
Suppliers reporting messages from you that you did not send Customers receiving communications you did not send Payments to unexpected destinations Colleagues receiving odd requests apparently from you
WHAT THOSE MEAN
Frequently an account compromise rather than a device one.
WHAT IS EASY TO MISS
A compromise designed to remain unnoticed.
Most do.
WHAT TO CHECK REGULARLY
Login notifications Mail rules Bank transactions Connected applications
WHAT TO DO WHEN SOMETHING LOOKS WRONG
Investigate rather than dismissing.
The cost of checking is minutes.