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Email protection and network security services provider Barracuda is warning users about a zero-day flaw that it said has been exploited to breach the company's Email Security Gateway (ESG) appliances. The zero-day is being tracked as  CVE-2023-2868  and has been described as a remote code injection vulnerability affecting versions 5.1.3.001 through 9.2.0.006. The California-headquartered firm  said  the issue is rooted in a component that screens the attachments of incoming emails. "The vulnerability arises out of a failure to comprehensively sanitize the processing of .tar file (tape archives)," according to an  advisory  from the NIST's national vulnerability database. "The vulnerability stems from incomplete input validation of a user-supplied .tar file as it pertains to the names of the files contained within the archive. As a consequence, a remote attacker can specifically format these file names in a particular manner that will result in remotely exe

A new botnet called  Dark Frost  has been observed launching distributed denial-of-service (DDoS) attacks against the gaming industry. "The Dark Frost botnet, modeled after Gafgyt, QBot, Mirai, and other malware strains, has expanded to encompass hundreds of compromised devices," Akamai security researcher Allen West  said  in a new technical analysis shared with The Hacker News. Targets include gaming companies, game server hosting providers, online streamers, and even other gaming community members with whom the threat actor has interacted directly. As of February 2023, the botnet comprises 414 machines running various instruction set architectures such as ARMv4, x86, MIPSEL, MIPS, and ARM7.  Botnets are usually made up of a vast network of compromised devices around the world. The operators tend to use the enslaved hosts to mine cryptocurrency, steal sensitive data, or harness the collective internet bandwidth from these bots to knock down other websites and internet

The introduction of Open AI's ChatGPT was a defining moment for the software industry, touching off a GenAI race with its November 2022 release. SaaS vendors are now rushing to upgrade tools with enhanced productivity capabilities that are driven by generative AI. Among a wide range of uses, GenAI tools make it easier for developers to build software, assist sales teams in mundane email writing, help marketers produce unique content at low cost, and enable teams and creatives to brainstorm new ideas.  Recent significant GenAI product launches include Microsoft 365 Copilot, GitHub Copilot, and Salesforce Einstein GPT. Notably, these GenAI tools from leading SaaS providers are paid enhancements, a clear sign that no SaaS provider will want to miss out on cashing in on the GenAI transformation. Google will soon launch its SGE "Search Generative Experience" platform for premium AI-generated summaries rather than a list of websites.  At this pace, it's just a matter of a short time befo

Zyxel has released software updates to address two critical security flaws affecting select firewall and VPN products that could be abused by remote attackers to achieve code execution. Both the flaws –  CVE-2023-33009 and CVE-2023-33010  – are  buffer overflow vulnerabilities  and are rated 9.8 out of 10 on the CVSS scoring system. A brief description of the two issues is below - CVE-2023-33009  - A buffer overflow vulnerability in the notification function that could enable an unauthenticated attacker to cause a denial-of-service (DoS) condition and remote code execution. CVE-2023-33010  - A buffer overflow vulnerability in the ID processing function that could enable an unauthenticated attacker to cause a denial-of-service (DoS) condition and remote code execution. The following devices are impacted - ATP (versions ZLD V4.32 to V5.36 Patch 1, patched in ZLD V5.36 Patch 2) USG FLEX (versions ZLD V4.50 to V5.36 Patch 1, patched in ZLD V5.36 Patch 2) USG FLEX50(W) / USG20(W

A hospital with 2,000 employees in the E.U. deployed Cynet protections across its environment. The hospital was in the process of upgrading several expensive imaging systems that were still supported by Windows XP and Windows 7 machines. Cynet protections were in place on most of the Windows XP and Windows 7 machines during the upgrade process, ensuring that legacy operating systems would not cause vulnerabilities or delay the activation of an  incident response plan . The hospital's I.T. security team appreciated this coverage after their previous provider abandoned support for Windows XP and Windows 7. "One of the many reasons we chose Cynet was their support of legacy Windows machines. It's expensive, difficult and time consuming to upgrade our imaging system software, but we needed protections as we slowly migrated to more current Windows environments. Cynet was one of the few providers that continue to protect these older Windows environments." The Attack Alo

An unnamed government entity associated with the United Arab Emirates (U.A.E.) was targeted by a likely Iranian threat actor to breach the victim's Microsoft Exchange Server with a "simple yet effective" backdoor dubbed  PowerExchange . According to a new report from Fortinet FortiGuard Labs, the intrusion relied on email phishing as an initial access pathway, leading to the execution of a .NET executable contained with a ZIP file attachment. The binary, which masquerades as a PDF document, functions as a dropper to execute the final payload, which then launches the backdoor. PowerExchange, written in PowerShell, employs text files attached to emails for command-and-control (C2) communication. It allows the threat actor to run arbitrary payloads and upload and download files from and to the system. The custom implant achieves this by making use of the Exchange Web Services ( EWS ) API to connect to the victim's Exchange Server and uses a mailbox on the server to

A Brazilian threat actor is targeting more than 30 Portuguese financial institutions with information-stealing malware as part of a long-running campaign that commenced in 2021. "The attackers can steal credentials and exfiltrate users' data and personal information, which can be leveraged for malicious activities beyond financial gain," SentinelOne researchers Aleksandar Milenkoski and Tom Hegel  said  in a new report shared with The Hacker News. The cybersecurity firm, which began tracking "Operation Magalenha" earlier this year, said the intrusions culminate in the deployment of two variants of a backdoor called  PeepingTitle  so as to "maximize attack potency." The links to Brazil stem from the use of the Brazilian-Portuguese language within the detected artifacts as well as source code overlaps with another banking trojan known as  Maxtrilha , which was first disclosed in September 2021. PeepingTitle, like Maxtrilha, is written in the Delphi

In today's digital landscape, browser security has become an increasingly pressing issue, making it essential for organizations to be aware of the latest threats to browser security. That's why the Browser Security platform LayerX is hosting  a webinar  featuring guest speaker Paddy Harrington, a senior analyst at Forrester and the lead author of Forrester's browser security report "Securing The Browser In The World Of Anywhere Work ". During this webinar, Harrington will join LayerX CEO, to discuss the emergence of the browser security category, the browser security risk and threat landscape, and why addressing browser security can wait no longer. The webinar will also cover browser security solutions, explaining their pros, cons, and differences, and how organizations can work more securely in the browser. Additionally, the session will focus on using browser security solutions as a cost-saver for security teams. Participants will also get an exclusive opport

The threat actors behind the nascent  Buhti  ransomware have eschewed their custom payload in favor of leaked LockBit and Babuk ransomware families to strike Windows and Linux systems. "While the group doesn't develop its own ransomware, it does utilize what appears to be one custom-developed tool, an information stealer designed to search for and archive specified file types," Symantec  said  in a report shared with The Hacker News. The cybersecurity firm is tracking the cybercrime group under the name  Blacktail . Buhti was first highlighted by Palo Alto Networks Unit 42 in February 2023,  describing  it as a Golang ransomware targeting the Linux platform. Later that same month, Bitdefender revealed the use of a Windows variant that was deployed against Zoho ManageEngine products that were vulnerable to critical remote code execution flaws ( CVE-2022-47966 ). The operators have since been observed swiftly exploiting other severe bugs impacting IBM's Aspera Fasp

A stealthy China-based group managed to establish a persistent foothold into critical infrastructure organizations in the U.S. and Guam without being detected,  Microsoft  and  the "Five Eyes" nations  said on Wednesday. The tech giant's threat intelligence team is tracking the activity, which includes post-compromise credential access and network system discovery, under the name  Volt Typhoon . The state-sponsored actor is  geared  towards espionage and information gathering, with the cluster active since June 2021 and obscuring its intrusion footprint by taking advantage of tools already installed or built into infected machines. Some of the prominent sectors targeted include communications, manufacturing, utility, transportation, construction, maritime, government, information technology, and education. The company further assessed with moderate confidence that the campaign is "pursuing development of capabilities that could disrupt critical communications i