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Mastodon, a popular decentralized social network, has released a security update to fix critical vulnerabilities that could expose millions of users to potential attacks. Mastodon is known for its federated model, consisting of thousands of separate servers called "instances," and it has over 14 million users across more than 20,000 instances. The most critical vulnerability, CVE-2023-36460 , allows hackers to exploit a flaw in the media attachments feature, creating and overwriting files in any location the software could access on an instance. This software vulnerability could be used for DoS and arbitrary remote code execution attacks, posing a significant threat to users and the broader Internet ecosystem. If an attacker gains control over multiple instances, they could cause harm by instructing users to download malicious applications or even bring down the entire Mastodon infrastructure. Fortunately, there is no evidence of this vulnerability being exploited so fa...

CISOs, security leaders, and SOC teams often struggle with limited visibility into all connections made to their company-owned assets and networks. They are hindered by a lack of open-source intelligence and powerful technology required for proactive, continuous, and effective discovery and protection of their systems, data, and assets. As advanced threat actors constantly search for easily exploitable vulnerabilities around the clock, CISOs are in pursuit of improved methods to reduce threat exposures and safeguard their assets, users, and data from relentless cyber-attacks and the severe consequences of breaches. In response to this need, an emerging solution addressing the most critical priorities at the initial stage of the attack chain has provided security leaders with a new tool to manage their most pressing threat exposures at their origin. Leading analyst firm Gartner Research describes the solution: "By 2026, organizations prioritizing their security investments based...

Ransomware attacks are a major problem for organizations everywhere, and the severity of this problem continues to intensify. Recently, Microsoft's Incident Response team investigated the BlackByte 2.0 ransomware attacks and exposed these cyber strikes' terrifying velocity and damaging nature. The findings indicate that hackers can complete the entire attack process, from gaining initial access to causing significant damage, in just five days. They waste no time infiltrating systems, encrypting important data, and demanding a ransom to release it. This shortened timeline poses a significant challenge for organizations trying to protect themselves against these harmful operations. BlackByte ransomware is used in the final stage of the attack, using an 8-digit number key to encrypt the data. To carry out these attacks, hackers use a powerful combination of tools and techniques. The investigation revealed that they take advantage of unpatched Microsoft Exchange Servers—an ...

SaaS Adoption is Skyrocketing, Resilience Hasn't Kept Pace SaaS platforms have revolutionized how businesses operate. They simplify collaboration, accelerate deployment, and reduce the overhead of managing infrastructure. But with their rise comes a subtle, dangerous assumption: that the convenience of SaaS extends to resilience. It doesn't. These platforms weren't built with full-scale data protection in mind . Most follow a shared responsibility model — wherein the provider ensures uptime and application security, but the data inside is your responsibility. In a world of hybrid architectures, global teams, and relentless cyber threats, that responsibility is harder than ever to manage. Modern organizations are being stretched across: Hybrid and multi-cloud environments with decentralized data sprawl Complex integration layers between IaaS, SaaS, and legacy systems Expanding regulatory pressure with steeper penalties for noncompliance Escalating ransomware threats and inside...

Google has released its monthly security updates for the Android operating system, addressing 46 new software vulnerabilities. Among these, three vulnerabilities have been identified as actively exploited in targeted attacks. One of the vulnerabilities tracked as CVE-2023-26083 is a memory leak flaw affecting the Arm Mali GPU driver for Bifrost, Avalon, and Valhall chips. This particular vulnerability was exploited in a previous attack that enabled spyware infiltration on Samsung devices in December 2022. This vulnerability was regarded as serious enough to prompt the Cybersecurity and Infrastructure Security Agency (CISA) to issue a patching order for federal agencies in April 2023. Another significant vulnerability, identified as CVE-2021-29256, is a high-severity issue that affects specific versions of the Bifrost and Midgard Arm Mali GPU kernel drivers. This flaw permits an unprivileged user to gain unauthorized access to sensitive data and escalate privileges to the root lev...

JumpCloud, a provider of cloud-based identity and access management solutions, has swiftly reacted to an ongoing cybersecurity incident that impacted some of its clients. As part of its damage control efforts, JumpCloud has reset the application programming interface (API) keys of all customers affected by this event, aiming to protect their valuable data. The company has informed the concerned clients about the critical nature of this move, reinforcing its commitment to safeguarding their operations and organizations. This API key reset will, however, disrupt certain functionalities like AD import, HRIS integrations, JumpCloud PowerShell modules, JumpCloud Slack apps, Directory Insights Serverless apps, ADMU, third-party zero-touch MDM packages, Command Triggers, Okta SCIM integration, Azure AD SCIM integration, Workato, Aquera, Tray, and more. Despite the potential disruptions, JumpCloud maintains that the key reset is for the greater good of its clients. For those needing assis...

Cybersecurity agencies have warned about the emergence of new variants of the TrueBot malware. This enhanced threat is now targeting companies in the U.S. and Canada with the intention of extracting confidential data from infiltrated systems. These sophisticated attacks exploit a critical vulnerability ( CVE-2022-31199 ) in the widely used Netwrix Auditor server and its associated agents. This vulnerability enables unauthorized attackers to execute malicious code with the SYSTEM user's privileges, granting them unrestricted access to compromised systems. The TrueBot malware , linked with cybercriminal collectives Silence and FIN11, is deployed to siphon off data and disseminate ransomware, jeopardising the safety of numerous infiltrated networks. The cybercriminals gain their initial foothold by exploiting the cited vulnerability, then proceed to install TrueBot. Once they have breached the networks, they install the FlawedGrace Remote Access Trojan (RAT) to escalate their p...

The Iranian nation-state actor known as TA453 has been linked to a new set of spear-phishing attacks that infect both Windows and macOS operating systems with malware. "TA453 eventually used a variety of cloud hosting providers to deliver a novel infection chain that deploys the newly identified PowerShell backdoor GorjolEcho," Proofpoint  said  in a new report. "When given the opportunity, TA453 ported its malware and attempted to launch an Apple flavored infection chain dubbed NokNok. TA453 also employed  multi-persona impersonation  in its unending espionage quest." TA453, also known by the names APT35, Charming Kitten, Mint Sandstorm, and Yellow Garuda, is a threat group linked to Iran's Islamic Revolutionary Guard Corps (IRGC) that has been active since at least 2011. Most recently, Volexity highlighted the adversary's use of an updated version of a Powershell implant called  CharmPower  (aka GhostEcho or POWERSTAR). In the attack sequence discov...

Gcore Radar is a quarterly report prepared by Gcore that provides insights into the current state of the DDoS protection market and cybersecurity trends. This report offers you an understanding of the evolving threat landscape and highlights the measures required to protect against attacks effectively. It serves as an insight for businesses and individuals seeking to stay informed about the latest developments in cybersecurity. As we entered 2023, the cybersecurity landscape witnessed an increase in sophisticated, high-volume attacks. Here, we present the current state of the DDoS protection market based on Gcore's statistics. Key Highlights from Q1–Q2  The maximum attack power rose from 600 to 800 Gbps. UDP flood attacks were most common and amounted to 52% of total attacks, while SYN flood accounted for 24%. In third place was TCP flood. The most-attacked business sectors are gaming, telecom, and financial. The longest attack duration in the year's first half was sev...

Details have emerged about a newly identified security flaw in the Linux kernel that could allow a user to gain elevated privileges on a target host. Dubbed  StackRot  ( CVE-2023-3269 , CVSS score: 7.8), the flaw impacts Linux versions 6.1 through 6.4. There is no evidence that the shortcoming has been exploited in the wild to date. "As StackRot is a Linux kernel vulnerability found in the memory management subsystem, it affects almost all kernel configurations and requires minimal capabilities to trigger," Peking University security researcher Ruihan Li  said . "However, it should be noted that maple nodes are freed using RCU callbacks, delaying the actual memory deallocation until after the RCU grace period. Consequently, exploiting this vulnerability is considered challenging." Following  responsible disclosure  on June 15, 2023, it has been  addressed  in stable versions 6.1.37, 6.3.11, and 6.4.1 as of July 1, 2023, after a two-week effort le...