Latest cybersecurity reporting from selected sources.

Investigators Find Violations of State Cyber RegulationsNew York fined Delta Dental $2.25 million for the company's response to the mass exploit of a zero-day vulnerability in Progress Software' MOVEit file transfer application. Delta Dental is one of thousands of organizations caught up in the blast radius of an automated 2023 Memorial Day hack.

Security researchers collected $792,750 in cash after exploiting 56​​​​​​​ unique zero-day vulnerabilities during the second day of the Pwn2Own Ireland 2025 hacking competition. [...]

RomCom Group Deployed SnipBot, RustyClaw and Mythic Agent VariantsA Russian speaking hacking group is exploiting a zero-day flaw in WinRAR, a sign of the group's growing sophistication and evolution from a cybercrime outfit into a cyberespionage operation. The campaign exploited a vulnerability now tracked as CVE-2025-8088, a path traversal vulnerability.

A Chinese hacking group is deploying Warlock ransomware on Microsoft SharePoint servers vulnerable to widespread attacks targeting the recently patched ToolShell zero-day exploit chain. [...]

But Hacking Groups of All Stripes Now Have Access to Exploit Code, Researchers WarnMicrosoft said an attack campaign targeting zero-day vulnerabilities in on-premises SharePoint servers appears to have begun by July 7, tied to three Chinese hack groups. With proof-of-concept exploit code now in the wild, security experts said hackers of all stripes have joined the fray.

The French cybersecurity agency on Tuesday revealed that a number of entities spanning governmental, telecommunications, media, finance, and transport sectors in the country were impacted by a malicious campaign undertaken by a Chinese hacking group by weaponizing several zero-day vulnerabilities in Ivanti Cloud Services Appliance (CSA) devices

The threat actors behind the zero-day exploitation of a recently-patched security vulnerability in Microsoft Windows have been found to deliver two new backdoors called SilentPrism and DarkWisp

AG Says HealthAlliance Tried But Failed to Fix Zero-Day Flaw That Led to ExploitNew York State has levied a $550,000 fine against a healthcare group that tried - but failed - to patch a critical zero-day vulnerability in a Citrix NetScaler appliance used for telemedicine. Hackers exploited the flaw, stealing 196 gigabytes of data in an incident affecting 242,000 people.

Cryptocurrency Users Targeted in Latest Campaign Involving FudModule RootkitA hacking group tied to North Korea exploited a zero-day vulnerability in the open source Google Chromium web browser to try and steal cryptocurrency, Microsoft said. The attack campaign is the latest to involve a sophisticated North Korean rootkit called FudModule. Google has fixed the flaw.

​Cisco warned today that a state-backed hacking group has been exploiting two zero-day vulnerabilities in Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) firewalls since November 2023 to breach government networks worldwide. [...]

Beijing Used FortiGate Vulnerability to Install TrojanChinese espionage hackers penetrated Dutch military systems in early 2023, using a zero-day exploit in a Fortinet virtual private network to obtain access, Netherlands intelligence agencies disclosed Tuesday. They attributed the hacking to Chinese state actors with high confidence.

A Chinese hacking group has been exploiting a critical vCenter Server vulnerability (CVE-2023-34048) as a zero-day since at least late 2021. [...]

Public exploit code is now available for the critical Cisco IOS XE vulnerability tracked as CVE-2023-20198 that was leveraged as a zero-day to hack tens of thousands of devices. [...]

The North Korea-linked Lazarus Group has been observed weaponizing flaws in an undisclosed software to breach a financial business entity in South Korea twice within a span of a year

Apple has released security updates to address a zero-day vulnerability that threat actors can exploit in attacks targeting Macs and Apple Watch devices. [...]

A threat actor, likely Chinese in origin, is actively attempting to exploit a zero-day vulnerability in the Zimbra open-source email platform as part of spear-phishing campaigns that commenced in December 2021