This advisory provides an in-depth look at Akira ransomware, a rapidly evolving threat targeting organizations across critical infrastructure sectors. It outlines how attackers gain access, move laterally, exfiltrate data, and execute sophisticated double-extortion tactics. Updated through November 2025, it highlights new vulnerabilities, techniques, and tools used by Akira actors—including attacks on VPNs, ESXi environments, and cloud-based backups. The document also offers actionable mitigation steps to strengthen defenses and reduce risk for public and private sector organizations.

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| Website: | Visit Publisher Website |
| Publisher: | Cybersecurity and Infrastructure Security Agency (CISA) |
| Published: | November 13, 2025 |
| License: | Public Domain |