ransomware | Breaking Cybersecurity News | The Hacker News

ThreatsDay Bulletin is back on The Hacker News, and this week feels off in a familiar way. Nothing loud, nothing breaking everything at once. Just a lot of small things that shouldn’t work anymore but still do. Some of it looks simple, almost sloppy, until you see how well it lands. Other bits feel a little too practical, like they’re already closer to real-world use than anyone wants to admit. And the background noise is getting louder again, the kind people usually ignore. A few stories are clever in a bad way. Others are just frustratingly avoidable. Overall, it feels like quiet pressure is building in places that matter. Skim it or read it properly, but don’t skip this one. Emerging RaaS exploiting FortiGate flaws The Gentlemen RaaS Detailed Group-IB has shed light on the various tactics adopted by The Gentlemen, a nascent Ransomware-as-a-Service (RaaS) operation that consists of about 20 members. It originated f...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has urged government agencies to apply patches for two security flaws impacting Synacor Zimbra Collaboration Suite (ZCS) and Microsoft Office SharePoint , stating they have been actively exploited in the wild. The vulnerabilities in question are as follows - CVE-2025-66376 (CVSS score: 7.2) - A stored cross-site scripting vulnerability in the Classic UI of ZCS, where attackers could abuse Cascading Style Sheets (CSS) @import directives in an HTML e-mail message. (Fixed in versions 10.0.18 and 10.1.13 in November 2025 ) CVE-2026-20963 (CVSS score: 8.8) - A deserialization of untrusted data vulnerability in Microsoft Office SharePoint that allows an unauthorized attacker to execute code over a network. (Fixed in January 2026 ) The addition of CVE-2025-66376 to the KEV catalog follows a report from Seqrite Labs, which detailed a campaign orchestrated by a suspected Russian state-sponsored intrusion set targeting t...

Amazon Threat Intelligence is warning of an active Interlock ransomware campaign that's exploiting a recently disclosed critical security flaw in Cisco Secure Firewall Management Center (FMC) Software. The vulnerability in question is CVE-2026-20131 (CVSS score: 10.0), a case of insecure deserialization of user-supplied Java byte stream, which could allow an unauthenticated, remote attacker to bypass authentication and execute arbitrary Java code as root on an affected device. According to data gleaned from the tech giant's MadPot global sensor network , the security flaw is said to have been exploited as a zero-day since January 26, 2026, more than a month before it was publicly disclosed by Cisco. "This wasn't just another vulnerability exploit; Interlock had a zero-day in their hands, giving them a week's head start to compromise organizations before defenders even knew to look. Upon making this discovery, we shared our findings with Cisco to help support...

The ransomware operation known as LeakNet has adopted the ClickFix social engineering tactic delivered through compromised websites as an initial access method. The use of ClickFix, where users are tricked into manually running malicious commands to address non-existent errors, is a departure from relying on traditional methods for obtaining initial access, such as through stolen credentials acquired from initial access brokers (IABs), ReliaQuest said in a technical report published today. The second important aspect of these attacks is the use of a staged command-and-control (C2) loader built on the Deno JavaScript runtime to execute malicious payloads directly in memory. "The key takeaway here is that both entry paths lead to the same repeatable post-exploitation sequence every time," the cybersecurity company said. "That gives defenders something concrete to work with: known behaviors you can detect and disrupt at each stage, well before ransomware deployment, r...

INTERPOL on Friday announced the takedown of 45,000 malicious IP addresses and servers used in connection with phishing, malware, and ransomware campaigns, as part of the agency's ongoing efforts to dismantle criminal networks, disrupt emerging threats, and safeguard victims from scams. The effort is part of an international law enforcement operation that involved 72 countries and territories. It also led to the arrest of 94 people, with another 110 individuals still under investigation. A total of 212 electronic devices and servers were seized during raids at various key locations. One such operation in Bangladesh saw 40 suspects arrested and 134 electronic devices confiscated pertaining to a wide range of cybercrime offences, including loan and job scams, identity theft, and credit card fraud. In Togo, authorities apprehended 10 suspects accused of running a fraud ring from a residential area. While some were involved in hacking into social media accounts, others conducted s...