Mozilla fixes Firefox zero-days exploited at hacking contest
Mozilla released emergency security updates to address two Firefox zero-day vulnerabilities demonstrated in the recent Pwn2Own Berlin 2025 hacking competition. The fixes, which include the Firefox on Desktop and Android and two Extended Support Releases (ESR), came mere hours after the conclusion of Pwn2Own, on Saturday, where the second vulnerability was demonstrated. The first flaw, tracked under CVE-2025-4918, […]
Hackers earn $1,078,750 for 28 zero-days at Pwn2Own Berlin
The Pwn2Own Berlin 2025 hacking competition has concluded, with security researchers earning $1,078,750 after exploiting 29 zero-day vulnerabilities and encountering some bug collisions. Throughout the contest, they targeted enterprise technologies in the AI, web browser, virtualization, local privilege escalation, servers, enterprise applications, cloud-native/container, and automotive categories. According to Pwn2Own’s rules, all targeted devices had all security […]
New ‘Defendnot’ tool tricks Windows into disabling Microsoft Defender
A new tool called ‘Defendnot’ can disable Microsoft Defender on Windows devices by registering a fake antivirus product, even when no real AV is installed. The trick utilizes an undocumented Windows Security Center (WSC) API that antivirus software uses to tell Windows it is installed and is now managing the real-time protection for the device. When […]
Windows 10 KB5058379 update triggers BitLocker recovery on some devices
The Windows 10 KB5058379 cumulative update is triggering unexpected BitLocker recovery prompts on some devices afters it’s installed and the computer restarted. On May 13, Microsoft released the Windows 10 KB5058379 cumulative update as part of their May 2025 Patch Tuesday updates. This is a mandatory update as it contains security updates for vulnerabilities fixed by Microsoft, which included five […]
Government webmail hacked via XSS bugs in global spy campaign
Hackers are running a worldwide cyberespionage campaign dubbed ‘RoundPress,’ leveraging zero-day and n-day flaws in webmail servers to steal email from high-value government organizations. ESET researchers who uncovered the operation attribute it with medium confidence to the Russian state-sponsored hackers APT28 (aka “Fancy Bear” or “Sednit”). The campaign started in 2023 and continued with the adoption of new exploits […]
FBI: US officials targeted in voice deepfake attacks since April
The FBI warned that cybercriminals using AI-generated audio deepfakes to target U.S. officials in voice phishing attacks that started in April. This warning is part of a public service announcement issued on Thursday that also provides mitigation measures to help the public spot and block attacks using audio deepfakes (also known as voice deepfakes). “Since April 2025, […]
Nova Scotia Power confirms hackers stole customer data in cyberattack
Nova Scotia Power confirms it suffered a data breach after threat actors stole sensitive customer data in a cybersecurity incident discovered last month. Nova Scotia Power, a subsidiary of Emera Inc., is a significant utility in Canada. It serves over 500,000 residential, commercial, and industrial customers in Nova Scotia, holding 95% of the market share. […]
Windows 11 and Red Hat Linux hacked on first day of Pwn2Own
On the first day of Pwn2Own Berlin 2025, security researchers were awarded $260,000 after successfully demonstrating zero-day exploits for Windows 11, Red Hat Linux, and Oracle VirtualBox. Red Hat Enterprise Linux for Workstations was the first to fall in the local privilege escalation category after DEVCORE Research Team’s Pumpkin exploited an integer overflow vulnerability to […]
New Tor Oniux tool anonymizes any Linux app’s network traffic
Tor has announced Oniux, a new command-line tool for routing any Linux application securely through the Tor network for anonymized network connections. Unlike classic methods like torsocks, which rely on user-space tricks, Oniux uses Linux namespaces to create a fully isolated network environment for each application, preventing data leaks even if the app is malicious […]
Malicious NPM package uses Unicode steganography to evade detection
A malicious package in the Node Package Manager index uses invisible Unicode characters to hide malicious code and Google Calendar links to host the URL for the command-and-control location. The package, named os-info-checker-es6, appears as an information utility and has been downloaded more than 1,000 times since the beginning of the month. Researchers at Veracode, a code security assessment […]