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Pysa ransomware revealed "middle finger" law enforcement officers

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Cyber ​​ransomware posted dozens of victims simultaneously on their website.

The cyber ransomware group Pysa (also known as Mespinoza) simultaneously posted dozens of victims on its site of leaks, immediately after the US government announced a series of measures against cyber ransomware groups.

There are currently 50 companies, universities and organizations listed on the Pysa leak site. However, for many experts, the true timing of the attacks raises questions, since Pysa usually adds victims to its site some time after the attack.

As Allan Liska, an expert in the field of ransomware of the information security company Recorded Future, told ZDNet, most likely not all the victims published on the site are new.

“They (Pysa members – ed.) Publish victim data six or even more months after the initial attack. These may be all the victims from whom they have kidnapped and published data, but there are definitely more of them than we have observed in other periods of the present Years. Many different organizations around the world, without any topic, “- said Liska.

The colleague’s opinion is supported by Emsisoft analyst Brett Callow. According to him, Pysa discloses the names of its victims several weeks or even months after the attack, which sets it apart from other cyber ransomware groups.

Why the ransomware waited so long before releasing their victims’ data is unclear. It is also unclear why they suddenly decided to post so much information at once.

Recently, the US government has worked with Europol, Eurojust, Interpol and other law enforcement agencies to combat cyber ransomware groups. Operation GoldDust has eliminated a number of cyber ransomware groups over the past six months. The operation involved 17 countries around the world, and dozens of people were arrested in Europe, suspected of links with cyber ransomware. In particular, the REvil infrastructure was seized by joint efforts, as a result of which the group had to “close the shop” a second time.

Both Callow and Liska note that the publication by the Pysa group of the data of the attacked organizations was quite unexpected, given the measures taken by law enforcement agencies.

“There is no choice but to assume that they did it in response to the news about REvil in order to either show the authorities the middle finger or show confidence in themselves in case their partners suddenly start to back down,” Callow explained.

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Vulnerability found in the Apple M1 processor that cannot be closed programmatically

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Vulnerability found in the Apple M1 processor that cannot be

Specialists from the Computer Science and Artificial Intelligence Laboratory (CSAIL) from the Massachusetts Institute of Technology said that they were able to develop a PACMAN attack technique, which is possible due to a hardware vulnerability in the Apple M1 processor. Moreover, it cannot be closed by software.

Vulnerability found in the Apple M1 processor that cannot be closed programmatically

The attack itself is carried out using software and hardware, and it can be performed remotely. The PACMAN attack makes it possible to gain access to the kernel of the operating system. At the same time, potentially the same vulnerabilities can be in Qualcomm and Samsung processors, but this has not yet been confirmed.

The technical side of the attack is based on the Pointer Authentication function. It is used to check Pointer Authentication Codes (PACs), allowing only code-signed software to run. However, the PACMAN method allows you to select the necessary PAC values. In part, this technique is similar to Specter and Meltdown in Intel processors.

At the same time, Apple spokesman Scott Radcliffe said that the vulnerability does not pose an immediate threat to users and is not sufficient in itself to bypass operating system protections.

A few years ago, a vulnerability was already found in Arm processors that allows an attacker to gain unauthorized access to data.

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Security

So much for Unisoc. Companies have discovered a vulnerability in single-chip systems

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So much for Unisoc Companies have discovered a vulnerability in

Unisoc is actively capturing the market for single-chip systems, although it does so exclusively in the budget segment itself. However, it turned out that these platforms have a critical vulnerability.

So much for Unisoc.  Companies have discovered a vulnerability in single-chip systems

According to the source, the problem is in the modem’s firmware and affects both 4G and 5G platforms. The vulnerability, numbered CVE-2022-20210, was discovered while scanning Non-Access Stratum (NAS) message handlers. This vulnerability could be used to neutralize or block the device’s cellular capabilities.

The vulnerability was first discovered in the Motorola Moto G20 smartphone based on the Unisoc T700 SoC. But in the end it turned out that the same vulnerability occurs in other platforms, however, the source did not provide a list.

The Check Point specialists who discovered the vulnerability notified Unisoc back in May, and the company has already released a fix, so smartphone owners should not worry now if they update the software of their devices.

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Security

New vulnerability in Microsoft Office is heavily exploited by hackers

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New vulnerability in Microsoft Office is heavily exploited by hackers

A serious vulnerability has been found in the Microsoft Office suite that could potentially allow attackers to execute arbitrary code.

New vulnerability in Microsoft Office is heavily exploited by hackers

She was assigned the number CVE-2022-30190, and among the researchers they gave the name Follina. As noted in Kaspersky Lab, the most unpleasant thing is that there is no fix yet, and in the meantime, the vulnerability is already being actively exploited by attackers. Vulnerability CVE-2022-30190 threatens all operating systems of the Windows family, both regular and server.

While the update is being developed, experts recommend that all Windows users and administrators take advantage of temporary workarounds. As a Microsoft workaround recommends disable the MSDT URL protocol.

The CVE-2022-30190 vulnerability itself is contained in the Microsoft Windows Support Diagnostic Tool (MSDT), but due to the implementation of this tool, a single malicious office document is enough to exploit the vulnerability.

The scheme could be like this. Attackers create a malicious office document and slip it to the victim, for example by sending an email with an attachment. The infected file contains a link to an HTML file that contains JavaScript code that executes malicious code on the command line via MSDT. As a result, attackers are able to install programs, view, modify or destroy data, as well as create new accounts – that is, do everything that the privileges of the user who opened the infected file allow.

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