Summary Actions to Take Today to Protect Against Iranian State-Sponsored Malicious Cyber Activity• Immediately patch software affected by the following vulnerabilities: CVE-2021-34473, 2018-13379, 2020-12812, and 2019-5591.• Implement multi-factor authentication.• Use strong, unique passwords. Note: this advisory uses the MITRE Adversarial Tactics, Techniques, and Common Knowledge (ATT&CK®) framework, version 10. See the ATT&CK for Enterprise for all …