The Hacker News

A new multi-stage phishing campaign has been observed targeting users in Russia with ransomware and a remote access trojan called Amnesia RAT. "The attack begins with social engineering lures delivered via business-themed documents crafted to appear routine and benign," Fortinet FortiGuard Labs researcher Cara Lin said in a technical breakdown published this week. "These documents and

The Russian nation-state hacking group known as Sandworm has been attributed to what has been described as the "largest cyber attack" targeting Poland's power system in the last week of December 2025. The attack was unsuccessful, the country's energy minister, Milosz Motyka, said last week. "The command of the cyberspace forces has diagnosed in the last days of the year the strongest attack on

AI agents are accelerating how work gets done. They schedule meetings, access data, trigger workflows, write code, and take action in real time, pushing productivity beyond human speed across the enterprise. Then comes the moment every security team eventually hits: “Wait… who approved this?” Unlike users or applications, AI agents are often deployed quickly, shared broadly,

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday added a critical security flaw affecting Broadcom VMware vCenter Server that was patched in June 2024 to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation in the wild. The vulnerability in question is CVE-2024-37079 (CVSS score: 9.8), which refers to a heap overflow in the

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday added four security flaws to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation in the wild. The list of vulnerabilities is as follows - CVE-2025-68645 (CVSS score: 8.8) - A PHP remote file inclusion vulnerability in Synacor Zimbra Collaboration Suite (ZCS) that could allow a

Fortinet has officially confirmed that it's working to completely plug a FortiCloud SSO authentication bypass vulnerability following reports of fresh exploitation activity on fully-patched firewalls. "In the last 24 hours, we have identified a number of cases where the exploit was to a device that had been fully upgraded to the latest release at the time of the attack, which suggested a new

TikTok on Friday officially announced that it formed a joint venture that will allow the hugely popular video-sharing application to continue operating in the U.S. The new venture, named TikTok USDS Joint Venture LLC, has been established in compliance with the Executive Order signed by U.S. President Donald Trump in September 2025, the platform said. The new deal will see TikTok's Chinese

Cybersecurity researchers have disclosed details of a new dual-vector campaign that leverages stolen credentials to deploy legitimate Remote Monitoring and Management (RMM) software for persistent remote access to compromised hosts. "Instead of deploying custom viruses, attackers are bypassing security perimeters by weaponizing the necessary IT tools that administrators trust," KnowBe4 Threat

Microsoft has warned of a multi‑stage adversary‑in‑the‑middle (AitM) phishing and business email compromise (BEC) campaign targeting multiple organizations in the energy sector. "The campaign abused SharePoint file‑sharing services to deliver phishing payloads and relied on inbox rule creation to maintain persistence and evade user awareness," the Microsoft Defender Security Research Team said.

Cybersecurity researchers have disclosed details of a new ransomware family called Osiris that targeted a major food service franchisee operator in Southeast Asia in November 2025. The attack leveraged a malicious driver called POORTRY as part of a known technique referred to as bring your own vulnerable driver (BYOVD) to disarm security software, the Symantec and Carbon Black Threat Hunter