Summary: Changing the password blocks someone from signing in with the old password. However, they may still have an active session, a forwarding rule, access through a connected app, mailbox permissions, or a recovery method they added. When someone gets into a business email account, changing the password should happen immediately. Once that is done, the account still needs a full check because other forms of access may remain. During the time they had access, the attacker may have created a forwarding rule, approved a connected app, added a sign-in method, or granted access to another account. They may also…









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