Which of the following best describes Privilege Escalation?

$1.$

Privilege Escalation occurs when the attackers masquerade malicious activities under known and trusted processes that go under the radar, subverting potential defenses.

$2.$

Privilege Escalation occurs when the attackers obtain access to elevated permissions in the network, such as root and admin access privileges.

$3.$

Privilege Escalation occurs when the attackers gain knowledge about the system and internal network.

$4.$

Privilege Escalation occurs when the attackers steal account credentials.