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Cybersecurity researchers have discovered a case of "forced authentication" that could be exploited to leak a Windows user's NT LAN Manager (NTLM) tokens by tricking a victim into opening a specially crafted Microsoft Access file. The attack takes advantage of a legitimate feature in the database management system solution that allows users to  link to external data sources , such as a remote SQL Server table. "This feature can be abused by attackers to automatically leak the Windows user's NTLM tokens to any attacker-controlled server, via any TCP port, such as port 80," Check Point security researcher Haifei Li  said . "The attack can be launched as long as the victim opens an .accdb or .mdb file. In fact, any more-common Office file type (such as a .rtf ) can work as well." NTLM, an authentication protocol introduced by Microsoft in 1993, is a challenge-response protocol that's used to authenticate users during sign-in. Over the years, ...

The North Korean threat actors behind macOS malware strains such as RustBucket and KANDYKORN have been observed "mixing and matching" different elements of the two disparate attack chains, leveraging RustBucket droppers to deliver KANDYKORN. The  findings  come from cybersecurity firm SentinelOne, which also tied a third macOS-specific malware called ObjCShellz to the RustBucket campaign. RustBucket  refers to an  activity cluster  linked to the Lazarus Group in which a backdoored version of a PDF reader app, dubbed SwiftLoader, is used as a conduit to load a next-stage malware written in Rust upon viewing a specially crafted lure document. The  KANDYKORN campaign , on the other hand, refers to a malicious cyber operation in which blockchain engineers of an unnamed crypto exchange platform were targeted via Discord to initiate a sophisticated multi-stage attack sequence that led to the deployment of the eponymous full-featured memory resident remote ac...

If forecasters are right, over the course of today, consumers will spend  $13.7 billion . Just about every click, sale, and engagement will be captured by a CRM platform. Inventory applications will trigger automated re-orders; communication tools will send automated email and text messages confirming sales and sharing shipping information.  SaaS applications supporting retail efforts will host nearly all of this behind-the-scenes activity. While retailers are rightfully focused on sales during this time of year, they need to ensure that the SaaS apps supporting their business operations are secure. No one wants a repeat of one of the biggest retail cyber-snafus in history, like when one U.S.-based national retailer had 40 million credit card records stolen.  The attack surface is vast and retailers must remain vigilant in protecting their entire SaaS app stack. For example, many often use multiple instances of the same application. They may use a different Salesforce ...

A new study has demonstrated that it's possible for passive network attackers to obtain private RSA host keys from a vulnerable SSH server by observing when naturally occurring computational faults that occur while the connection is being established. The Secure Shell (SSH) protocol is a method for securely transmitting commands and logging in to a computer over an unsecured network. Based on a client-server architecture, SSH uses cryptography to authenticate and encrypt connections between devices. A host key is a cryptographic key used for authenticating computers in the SSH protocol. Host keys are key pairs that are typically generated using public-key cryptosystems like RSA . "If a signing implementation using CRT-RSA has a fault during signature computation, an attacker who observes this signature may be able to compute the signer's private key," a group of academics from the University of California, San Diego, and Massachusetts Institute of Technology said ...

The U.K. and U.S., along with international partners from 16 other countries, have released new guidelines for the development of secure artificial intelligence (AI) systems. "The approach prioritizes ownership of security outcomes for customers, embraces radical transparency and accountability, and establishes organizational structures where secure design is a top priority," the U.S. Cybersecurity and Infrastructure Security Agency (CISA)  said . The goal is to  increase cyber security levels of AI  and help ensure that the technology is designed, developed, and deployed in a secure manner, the National Cyber Security Centre (NCSC)  added . The guidelines also build upon the U.S. government's  ongoing   efforts  to manage the risks posed by AI by ensuring that new tools are tested adequately before public release, there are guardrails in place to address societal harms, such as bias and discrimination, and privacy concerns, and setting up robust ...

An unspecified government entity in Afghanistan was targeted by a previously undocumented web shell called  HrServ  in what's suspected to be an advanced persistent threat (APT) attack. The web shell, a dynamic-link library (DLL) named "hrserv.dll," exhibits "sophisticated features such as custom encoding methods for client communication and in-memory execution," Kaspersky security researcher Mert Degirmenci  said  in an analysis published this week. The Russian cybersecurity firm said it identified variants of the malware dating all the way back to early 2021 based on the compilation timestamps of these artifacts. Web shells are typically  malicious tools  that provide remote control over a compromised server. Once uploaded, it allows threat actors to carry out a range of post-exploitation activities, including data theft, server monitoring, and lateral advancement within the network. The attack chain involves the  PAExec  remote administra...

The maintainers of the open-source file-sharing software ownCloud have warned of three critical security flaws that could be exploited to disclose sensitive information and modify files. A brief description of the vulnerabilities is as follows - CVE-2023-49103 (CVSS score: 10.0) - Disclosure of sensitive credentials and configuration in containerized deployments impacting graphapi versions from 0.2.0 to 0.3.0. CVE-2023-49105 (CVSS score: 9.8) - WebDAV Api Authentication Bypass using Pre-Signed URLs impacting core versions from 10.6.0 to 10.13.0. CVE-2023-49104 (CVSS score: 9.0) - Subdomain Validation Bypass impacting oauth2 prior to version 0.6.1. "The 'graphapi' app relies on a third-party library that provides a URL. When this URL is accessed, it reveals the configuration details of the PHP environment (phpinfo)," the company  said  of the first flaw. "This information includes all the environment variables of the web server. In containerized deplo...

More details have emerged about a malicious Telegram bot called  Telekopye  that's used by threat actors to pull off large-scale phishing scams. "Telekopye can craft phishing websites, emails, SMS messages, and more," ESET security researcher Radek Jizba  said  in a new analysis. The  threat actors behind the operation  – codenamed Neanderthals – are known to run the criminal enterprise as a legitimate company, spawning a hierarchical structure that encompasses different members who take on various roles. Once aspiring Neanderthals are recruited via advertisements on underground forums, they are invited to join designated Telegram channels that are used for communicating with other Neanderthals and keeping track of transaction logs. The ultimate goal of the operation is to pull off one of the three types of scams: seller, buyer, or refund. In the case of the former, Neanderthals pose as sellers and try to lure unwary Mammoths into purchasing a non-ex...

The title of this article probably sounds like the caption to a meme. Instead, this is an actual problem GitGuardian's engineers had to solve in implementing the mechanisms for their new  HasMySecretLeaked service . They wanted to help developers find out if their secrets (passwords, API keys, private keys, cryptographic certificates, etc.) had found their way into public GitHub repositories. How could they comb a vast library of secrets found in publicly available GitHub repositories and their histories and compare them to your secrets without you having to expose sensitive information? This article will tell you how. First, if we were to set a bit's mass as equal to that of one electron, a ton of data would be around 121.9 quadrillion petabytes of data at standard Earth gravity or $39.2 billion billion billion US dollars in MacBook Pro storage upgrades (more than all the money in the world). So when this article claims GitGuardian scanned a "ton" of GitHub public commit data, t...

Cybersecurity researchers have shed light on a Rust version of a cross-platform backdoor called  SysJoker , which is assessed to have been used by a Hamas-affiliated threat actor to target Israel amid the ongoing war in the region. "Among the most prominent changes is the shift to Rust language, which indicates the malware code was entirely rewritten, while still maintaining similar functionalities," Check Point  said  in a Wednesday analysis. "In addition, the threat actor moved to using OneDrive instead of Google Drive to store dynamic C2 (command-and-control server) URLs." SysJoker was  publicly documented  by Intezer in January 2022, describing it as a C++ backdoor capable of gathering system information and establishing contact with an attacker-controlled server by accessing a text file hosted on Google Drive that contains a hard-coded URL. "Being cross-platform allows the malware authors to gain advantage of wide infection on all major platforms," VMw...