Tushar Subhra Dutta, Author at GBHackers - Latest Cyber Security News | Hacker News

Zenbleed – AMD’s Zen2 Processor Flaw Allows Attackers to Steal Sensitive Data

Tushar Subhra Dutta — Tue, 25 Jul 2023 14:33:28 +0000

The CPUs that are based on x86-64 architecture feature XMM registers (128-bit), recently extended to 256-bit (YMM) and 512-bit (ZMM) for greater capacity. Beyond number crunching, the large registers (YMM and ZMM) are employed in various scenarios, including standard C library functions such as:- Tavis Ormandy, a Google security researcher, found a fresh AMD Zen2 […]

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WormGPT: Cybercriminals AI Tool Gained Over 5,000 Subscribers in Just a Week

Tushar Subhra Dutta — Fri, 21 Jul 2023 10:55:23 +0000

The revolutionary innovations by AI (Artificial Intelligence) include generative AI that has various creative potential, but along with that it also raises serious concerns with malicious tools like WormGPT. Since it’s a powerful generative AI-based tool, WormGPT enables attackers to create their own custom hacking tools that pose major cybersecurity challenges. Just after its launch, […]

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Sensitive Information of VirusTotal Users Exposed in Data Leak

Tushar Subhra Dutta — Thu, 20 Jul 2023 11:31:20 +0000

Globally, security analysts and IT professionals heavily rely on Virustotal, a vast malware database, to scan files for viruses and malware. Even it also enables users to upload suspicious files or links to assess potential threats effectively. VirusTotal, crucial in the battle against cyberattacks, is utilized by 70 antivirus manufacturers to compare submissions for suspicious […]

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Hackers Turn Exchange Servers into Malware Command & Control Centers

Tushar Subhra Dutta — Thu, 20 Jul 2023 10:16:02 +0000

Turla, also known as Secret Blizzard, KRYPTON, and UAC-0003, is an Advanced Persistent Threat (APT) group that has been associated with Russia’s Federal Security Service (FSB). This group has gained fame for its sophisticated and persistent cyber threat activities. The threat actors, known for targeting Western interests, were recently involved in disrupting the Snake cyber-espionage […]

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Hackers Use “chatgpt5[.]zip” Lure to Trick Users into Downloading Malware

Tushar Subhra Dutta — Wed, 19 Jul 2023 15:25:14 +0000

Hackers Use “chatgpt5 [.]zip” to Trick Users into Downloading Malware. Phishing remains a severe cybersecurity threat, deceiving employees with cleverly disguised malicious links and malware attachments, potentially causing company-wide troubles for over a decade. The 2022 FortiGuard Labs report and the 2023 Global Ransomware Research both highlight phishing as the leading initial access method in […]

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Lazarus APT Group Hijack Windows IIS Servers to Distribute Malware

Tushar Subhra Dutta — Sat, 15 Jul 2023 15:33:41 +0000

Threat actors always search for vulnerable devices and networks to gain illicit access and perform malicious activities to accomplish their goals. The APT group, Lazarus, as an initial breach path actively targeting the Microsoft Internet Information Services (IIS) servers. Cybersecurity researchers at AhnLab Security Emergency Response Center (ASEC) recently confirmed that operators of the Lazarus […]

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Red Menshen APT Group Deploying BPFDoor in Linux Kernel

Tushar Subhra Dutta — Fri, 14 Jul 2023 11:41:53 +0000

APTs Red Menshen expands targets to Linux and cloud servers, as seen in ransomware attacks on VMware ESXi, Mirai botnet variations, and cloud-focused stealers and crypto miners. APT groups extend focus beyond Windows, signified by Sandworm’s attacks on Linux-based routers. Unlike cybercrime malware with broad targets, APT malware prioritizes persistent stealth and routine maintenance. Red […]

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Re-released Apple WebKit Zero-Day Patch Fixes Website Breaking

Tushar Subhra Dutta — Thu, 13 Jul 2023 13:46:48 +0000

Apple has recently released new Rapid Security Response (RSR) patches to fix a zero-day vulnerability. This vulnerability has been exploited in attacks and affects iPhones, Macs, and iPads that have been fully patched. The zero-day vulnerability has been tracked as CVE-2023-37450, and this vulnerability was identified by an anonymous cybersecurity researcher. As a prompt response, […]

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Hackers Leverage USB Flash Drives to Attack Public and Private Sectors Globally

Tushar Subhra Dutta — Thu, 13 Jul 2023 05:25:37 +0000

During the initial half of 2023, a notable surge occurred in attacks exploiting infected USB drives for secret theft. While the USB-based operation campaigns caused most incidents, impacting both public and private sectors worldwide. Cybersecurity analysts at Mandiant Managed Defense recently observed two cyber espionage campaigns that are based on USB flash drives. Security researchers […]

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Hackers use Rekoobe Backdoor to Attack Linux Systems

Tushar Subhra Dutta — Tue, 11 Jul 2023 15:17:34 +0000

Rekoobe is a notorious backdoor that primarily targets Linux environments, and it’s actively exploited by the threat actors, mainly a Chinese threat group, APT31. This notorious backdoor was discovered in 2015 for the first time, while an updated version of it resurfaced in 2018 that was exploited by the threat actors in several attacks. AhnLab […]

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