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Samba has issued  software updates  to address multiple security vulnerabilities that, if successfully exploited, could allow remote attackers to execute arbitrary code with the highest privileges on affected installations. Chief among them is  CVE-2021-44142 , which  impacts  all versions of Samba before 4.13.17 and concerns an  out-of-bounds  heap read/write vulnerability in the VFS module " vfs_fruit " that provides compatibility with Apple SMB clients. Samba  is a popular freeware implementation of the Server Message Block (SMB) protocol that allows users to access files, printers, and other commonly shared resources over a network. "All versions of Samba prior to 4.13.17 are vulnerable to an out-of-bounds heap read write vulnerability that allows remote attackers to execute arbitrary code as root on affected Samba installations that use the VFS module vfs_fruit," the maintainers said in an advisory published on January 31. According to ...

With just about everything delivered from the cloud these days, employees can now collaborate and access what they need from anywhere and on any device. While this newfound flexibility has changed the way we think about productivity, it has also created new cybersecurity challenges for organizations. Historically, enterprise data was stored inside data centers and guarded by perimeter-based security tools. But with users using endpoints and networks your IT teams don't manage, this approach has become antiquated. To combat this new reality, organizations have turned to tactics such as relying on device management and antivirus software, as well as single sign-on and multi-factor authentication. Some vendors have even begun to claim these measures as a form of  Zero Trust , a popular idea where organizations should not trust any entity and provide access to its applications and data until its risk levels are verified. In this blog, I will break down what is and what isn't Zero T...

Researchers have demonstrated a new type of fingerprinting technique that exploits a machine's graphics processing unit (GPU) as a means to persistently track users across the web. Dubbed  DrawnApart , the method "identifies a device from the unique properties of its GPU stack," researchers from Australia, France, and Israel said in a new paper, adding "variations in speed among the multiple execution units that comprise a GPU can serve as a reliable and robust device signature, which can be collected using unprivileged JavaScript." A device fingerprint or machine fingerprint is information that is collected about the hardware, installed software, as well as the web browser and its associated add-ons from a remote computing device for the purpose of unique identification. Fingerprints can be a double-edged sword. On the one hand, a fingerprint algorithm may allow a service provider (e.g., bank) to detect and prevent identity theft and credit card fraud. But ...

A regional court in the German city of Munich has ordered a website operator to pay €100 in damages for transferring a user's personal data — i.e., IP address — to Google via the search giant's Fonts library without the individual's consent. The unauthorized disclosure of the plaintiff's IP address by the unnamed website to Google constitutes a contravention of the user's privacy rights, the court said, adding the website operator could theoretically combine the gathered information with other third-party data to identify the "persons behind the IP address." The violation amounts to the "plaintiff's loss of control over a personal data to Google," the ruling  issued by Landgericht München's third civil chamber in Munich read. Google Fonts is a  font embedding service  library from Google, allowing developers to add fonts to their Android apps and websites simply by referencing a stylesheet. As of January 2022, Google Fonts is a repos...

A group of academics at South Korea's Gwangju Institute of Science and Technology (GIST) have utilized natural silk fibers from domesticated silkworms to build an environmentally friendly digital security system that they say is "practically unbreachable." "The first natural physical unclonable function (PUF) […] takes advantage of the diffraction of light through natural microholes in native silk to create a secure and unique digital key for future security solutions," the researchers said . Physical unclonable functions or  PUFs  refer to devices that leverage inherent randomness and microscopic differences in electronics introduced during manufacturing to generate a unique identifier (e.g., cryptographic keys) for a given set of inputs and conditions. In other words, PUFs are non-algorithmic one-way functions derived from uncopiable elements to create unbreakable identifiers for strong authentication. Over the years, PUFs have been widely used in smartca...

Apple last year fixed a new set of macOS vulnerabilities that exposed Safari browser to attack, potentially allowing malicious actors to access users' online accounts, microphone, and webcam. Security researcher Ryan Pickren, who discovered and reported the bugs to the iPhone maker, was compensated with a $100,500 bug bounty, underscoring the severity of the issues. By exploiting a chain of security issues with iCloud Sharing and Safari 15, it enables the attacker to hijack the multimedia permission and gain "full access to every website ever visited by the victim" in Safari, including Gmail, iCloud, Facebook, and PayPal accounts. The  issues  specifically concern ShareBear, an iCloud file-sharing mechanism that prompts users upon attempting to open a shared document for the first time. Taking advantage of the fact that users are never displayed the prompt again once they accept to open the file, Pickren found that it's possible to alter the file's content to...

An Israeli national was sentenced to 97 months in prison in connection with operating the DeepDotWeb ( DDW ) clearnet website, nearly a year after the individual pleaded guilty to the charges. Tal Prihar, 37, an Israeli citizen residing in Brazil, is said to have played the role of an administrator of DDW since the website became functional in October 2013. He  pleaded guilty  to money laundering charges in March 2021 and agreed to forfeit the illegally amassed profits. DDW, until its seizure in May 2019, ostensibly  served  as a "news" website that connected internet users with underground marketplaces on the dark web that operate via darknets such as Tor, enabling the purchase of illegal firearms, malware and hacking tools, stolen financial data, heroin, fentanyl, and other illicit materials. Prihar, acting in cohorts with co-defendant Michael Phan, 34, of Israel, provided direct links to illegal marketplaces and in return for advertising these links, reaped s...

Microsoft has disclosed details of a large-scale, multi-phase phishing campaign that uses stolen credentials to register devices on a victim's network to further propagate spam emails and widen the infection pool. The tech giant said the attacks manifested through accounts that were not secured using multi-factor authentication (MFA), thereby making it possible for the adversary to take advantage of the target's bring-your-own-device (BYOD) policy and introduce their own rogue devices using the pilfered credentials. The attacks took place in two stages. "The first campaign phase involved stealing credentials in target organizations located predominantly in Australia, Singapore, Indonesia, and Thailand," Microsoft 365 Defender Threat Intelligence Team  said  in a technical report published this week. "Stolen credentials were then leveraged in the second phase, in which attackers used compromised accounts to expand their foothold within the organization via la...

2021 was a year peppered by cyberattacks, with numerous data breaches happening. Not only that, but ransomware has also become a prominent player in the hackers' world. Now, more than ever, it's important for enterprises to step up cybersecurity measures. They can do this through several pieces of technology, such as an open-source security platform like Wazuh .  Wazuh is a free and open source security platform that unifies XDR and SIEM capabilities, which not only enables companies to detect sophisticated threats, but can also help immensely in preventing data breaches and leaks from happening. As a result, it can save businesses from costly fixes that can ultimately end in their closure. It is also possible to integrate Wazuh with a number of external services and tools. Some of them are VirusTotal, YARA, Amazon Macie, Slack, and Fortigate Firewall. Consequently, companies can improve their security against hackers from penetrating their networks. What's great abou...

The notorious  Lazarus Group  actor has been observed mounting a new campaign that makes use of the Windows Update service to execute its malicious payload, expanding the arsenal of living-off-the-land (LotL) techniques leveraged by the APT group to further its objectives. The Lazarus Group, also known as  APT38 , Hidden Cobra, Whois Hacking Team, and Zinc, is the moniker assigned to the North Korea-based nation-state hacking group that's been active since at least 2009. Last year, the threat actor was  linked  to an elaborate  social engineering campaign  targeting security researchers. The latest spear-phishing attacks, which  Malwarebytes  detected on January 18, originate from weaponized documents with job-themed lures impersonating the American global security and aerospace company Lockheed Martin. Opening the decoy Microsoft Word file triggers the execution of a malicious macro embedded within the document that, in turn, executes a...