(Microsoft) Void Blizzard is a new threat actor Microsoft Threat Intelligence has observed conducting espionage operations primarily targeting organizations that are important to Russian government objectives. These include organizations in government, defense, transportation, media, NGOs, and healthcare, especially in Europe and North America. They often use stolen sign-in details that they likely buy from online marketplaces to gain access to organizations. Once inside, they steal large amounts of emails and files. In April 2025, Microsoft Threat Intelligence observed Void Blizzard begin using more direct methods to steal passwords, such as sending fake emails designed to trick people into giving away their login information.
A critical vulnerability in Zimbra Unified Communications Suite (ZCS) is being aggressively exploited, prompting CISA to issue a three-day deadline for federal agencies to patch. The flaw, CVE-2026-73570, allows unauthen…
A critical security flaw in Zimbra Collaboration (ZCS) has been actively exploited in the wild, allowing attackers to execute arbitrary commands without authentication. The vulnerability, CVE-2026-73570, stems from impro…
This week’s cybersecurity recap highlighted a concerning trend of AI-powered exploit generation, alongside a series of high-impact security incidents. A vulnerability in Coldcard hardware wallets led to an $88.6 million…
Russian threat actors, linked to Laundry Bear (TA488), are exploiting a vulnerability in Microsoft Outlook Web Access (OWA) to maintain persistent access to email accounts within U.S. and European government entities and…
Laundry Bear, a Russian state-linked APT group, has been aggressively exploiting vulnerabilities in both Zimbra Collaboration Suite’s webmail platform and Microsoft Outlook Web Access (OWA) to steal emails and credential…
This week’s cybersecurity news highlights a range of threats, including a new AI-powered malware (Dolphin X), a data breach affecting Abbott, widespread internet outages in Maine, zero-day vulnerabilities in Siemens swit…
CERT-UA has warned of a new phishing campaign led by the UAC-0099 threat cluster (linked to Russia) utilizing a malicious Notepad++ plugin to deliver the MATCHBOIL.V2 malware. The campaign begins with a phishing email co…
Russian state-sponsored threat actors, dubbed ‘Laundry Bear,’ have been exploiting a zero-day vulnerability (CVE-2025-66376) in Zimbra Collaboration Suite to target Western governments and enterprises, including US and U…
Russian state-aligned hackers, operating under the APT group Laundry Bear, are targeting governmental and commercial organizations globally through zero-click phishing campaigns exploiting a vulnerability in Zimbra webma…
A persistent cyberespionage campaign, tracked as CL-STA-1114, originating from Russian threat actors (Void Blizzard and LAUNDRY BEAR) is targeting Zimbra webmail instances across various sectors, including governments, d…
This Smashing Security podcast episode explores a significant cyberattack targeting the Netherlands National Police Force, attributed to a Russian-backed hacking group known as Void Blizzard. The attack involved stealing…
